Memory cards supported? - Samsung Galaxy A3, A5, A7 (2017) Accessories

Hey guys,
I can't seem to find any detailed information about memory card support on galaxy A5 2017. I was thinking about buying a microsd UHS-3 class 10, is it supported? or waste of money? i heard good opinions about this specific one: Samsung 64GB 100MB/s (U3) MicroSDXC EVO
but again, i'm no expert in the matter. My goal is to install apps on it, not much photos. I want the fastest card, i hate lag
thanks in advance

Well there are 2 slots on the phone : one for the sim card (obviously) and the other one for the memory card.

amithiel said:
Hey guys,
I can't seem to find any detailed information about memory card support on galaxy A5 2017. I was thinking about buying a microsd UHS-3 class 10, is it supported? or waste of money? i heard good opinions about this specific one: Samsung 64GB 100MB/s (U3) MicroSDXC EVO
but again, i'm no expert in the matter. My goal is to install apps on it, not much photos. I want the fastest card, i hate lag
thanks in advance
Click to expand...
Click to collapse
Yes @amithiel A5 2017 supports UHS 3 memory card and the limit is 256gb. However I wouldn't recommend spending so much on UHS 3 as these cards are useful only for high end cameras like go pro and security cams. On phone you wouldnt find much difference. Telling from experience. I am using 64gb UHS grade 3. And it give me 25 mpbs transfer speed when transfering files from pc to sd card when it is connected through phone. And gives 35~38mbps speed when directly connected to pc through card reader.
Sent from my SM-A720F using Tapatalk

I generally get 128g SD chips for my phones. Haven't filled one yet!

amithiel said:
Hey guys,
I can't seem to find any detailed information about memory card support on galaxy A5 2017. I was thinking about buying a microsd UHS-3 class 10, is it supported? or waste of money? i heard good opinions about this specific one: Samsung 64GB 100MB/s (U3) MicroSDXC EVO
but again, i'm no expert in the matter. My goal is to install apps on it, not much photos. I want the fastest card, i hate lag
thanks in advance
Click to expand...
Click to collapse
If you want to use adoptable storage, you would need the fast class 10 card, slower cards simply don't work well enough. Even if you just run apps off it, the extra speed is worth it. <It is not that much more than slower cards, maybe 10-20% more ... in Canada at any rate.>

Related

Premier microSD vs microSD

Has anyone tried the new Premier microSD card from Sandisk?
I'm interested in buying a new card for my Artemis and recently I discovered this new type of microSD. Does it offer any advantages comparing with the plain microSD? Is it faster or anything?
Any help would be appreciated
vaggoul said:
Has anyone tried the new Premier microSD card from Sandisk?
I'm interested in buying a new card for my Artemis and recently I discovered this new type of microSD. Does it offer any advantages comparing with the plain microSD? Is it faster or anything?
Any help would be appreciated
Click to expand...
Click to collapse
I bought the SanDisk Ultra if that's what you mean by premier microSD. And yes, it is much much faster interms of transfer speed. Other thing noticed is TomTom does much faster searching when you enter street names. It is worth the extra money.
I second that. I have a Sandisk Ultra 2GB in mine and it performs very well with it.
I wasn't talking about Ultra but nevertheless thank you for the info. Maybe I should go for the Ultra card afterall. I really like a fast memory card!!

Difference between Sandisk Ultra microsd card and normal card?

I'm going to buy a 16GB microsd card from sandisk. I've been finding on Amazon and found these two products:
Sandisk 16GB Mobile Ultra MicroSD Card : £36.00
SanDisk 16GB microSDHC Memory Card : £15.99
I've also noticed they're all class 2 (can't find a class 4 or class 6 sandisk). So what is the difference between them? I'm using the card for Windows Phone 7, so which one should I buy?
Ha, i'm looking to buy a 16Gb card for my htc desire and I was looking at exactly the same cards.
As far as I found so far the ultra version seems to be class 4.
If you have any new info it will me much appreciated.
well in some pages you can find comparative boxes about those micro sd, i remember that microsd 16 gb sandisk (class4) is more faster than 16 gb kingtons class4 , so i supousse that this ultra micro sd is like class 6 real XD, i will find some information about it, oh plz don't forget that some devices don't support those kind of micro sd (an example htc hd2 has little bugs with microsd class 4, i have one...)
Sorry if i don't write well but i'm peruavian =)
Hey guys,
Can any of you confirm if Android is booting from Sandisk 16GB Mobile Ultra MicroSD Card ?
I want to buy one but i saw in forums that some cards doesn't work for this..
the ultra one has the better speed and more stable than the normal one. And, it has the same compatitablity.
So, if you are not concern about the price, the ultra one is the better choice.
Also, that should have the extreme III type, that is the best~
Go for the Ultra microSD, it's faster!! been using a 8Gig on my phone and damn its fast!!
16GB Sandisk Micro SDHC
I'm currently using 16GB Sandisk Micro SDHC (class 4) for my LG P500. It is fast & I have not encountered any issues so far.
I've been using Sandisk memory cards for other gadgets & I think it is one of the most reliable brands that is available in my location.
With sandisk/kingston, class 2 should be fine too. CLASS 4 might help recording high def video
Stick with the name brands and forget the Chinese non name brand off off of Flea-bay, they are crap and do not work imho!!
The more expensive cards are usually just higher speed.
I use fast cards in my DSLR to help when shooting bursts. Slower cards fill up, and drop the fps.
I'm currently using 16GB Sandisk Micro SDHC
Go for the Ultra microSD, it's faster!!
You should choose your memory card depending on what you're going to use it for. Either way, you should go with Sandisk cards, as they are the highest quality and produce their own chips. Kingstons should be avoided even though for some reason they are known as a quality brand... kingston just buys chips from other manufacturers and puts their name on them.... you will find many different kinds of chips inside kingston, so you will find more variation and defects from batch to batch.
As far as class, that is only referring to the sequential write speed. If you are getting the card for a digital camera, then a high class card is good, because you will be writing a lot of files sequentially.
But if you plan on using the card for WP7 or to run android of off, generally a class 2 or 4 card is better, because they have better random access speeds. The tweaks card makers do to make cards have higher sequential write speeds many times will lower the random access speed, so you will have more issues running WP7 or Android off of a class 6 or 10 card.
for 8gb ultra i got with usb2.0 card reader : 13mb/s write , 20.5mb/s read
I know the thread is old, but still.
zarathustrax said:
You should choose your memory card depending on what you're going to use it for. Either way, you should go with Sandisk cards, as they are the highest quality and produce their own chips. Kingstons should be avoided even though for some reason they are known as a quality brand... kingston just buys chips from other manufacturers and puts their name on them.... you will find many different kinds of chips inside kingston, so you will find more variation and defects from batch to batch.
As far as class, that is only referring to the sequential write speed. If you are getting the card for a digital camera, then a high class card is good, because you will be writing a lot of files sequentially.
But if you plan on using the card for WP7 or to run android of off, generally a class 2 or 4 card is better, because they have better random access speeds. The tweaks card makers do to make cards have higher sequential write speeds many times will lower the random access speed, so you will have more issues running WP7 or Android off of a class 6 or 10 card.
Click to expand...
Click to collapse
I know thread is too old to write anything. But still (since google pointed me here)...
I've used both types of cards and have found that Sandisc ultra (Red & Black) is far better in speeds and reliability than the Sandisc simple/normal black colour chips. Also know that there are further/more better than ultra, called by Sandisc as extreme and Extreme Pro.
Also warranty for all is same: Lifetime. And Sandisc provided me a new chip within 25 days after my old 32 normal chip went faulty.
Re
I would always buy a class 10 card, because when you copy your photos it doesn't take so much time...
I discovered - the hard way - that "normal" class 2 or 4 MicroSD cards won't stay alive very long on Samsung Note 4 or similar phones... One day they stop working and all pictures and info is lost forever. The only MicroSD that can get the job done is a Class 10 UHC Sandisk card. I have used Kingston and all died only after a few months, specially if you install apps on them. They can´t handle the workload and you will end up losing everything you have on them. I have one of the red and gray Sandisk cards and it's awesome. It's fast and it's still working after 2 and a half years of use in a Sony Xperia Z2. Gotta love this little tough card.

Micro SD Card compatability?

I know, this is probably a silly question, but am I the only one that notices how devices only tend to label compatibility with Micro SD cards based on size, and not speed or class? For instance, my Galaxy Tab S2, it simply says it can take up to a 128gb SD card, but it does not say what speed it will work with.
The reason I ask, is that I am now in the market for a 128gb card, and yet I don't want to buy an expensive fast one, if my tablet will not be able to take advantage of the premium speed. Anyone have any thoughts?
I don't know about the speed but I have a SanDisk 200 GB that runs fine.
I think that any phone or tablet that will read 128 GB will also work with 200 GB.
Shofar
Don't worry
Any MicroSD card will work in your Galaxy Tab S2. But then, you might have to format it. When you buy the card, keep an eye out on the speed class- higher speeds are much better!
You are looking for a 128GB card, and I use one in my tablet so don't worry. It will work! But I seriously recommend a higher performance card because it can get very slow with cheaper cards.
Hope this helps!
I just tested a regular class 10 card and a UHS-1 card. Both tested at 9mb write and 40mb read. The same UHS-1 card tested over 40mb write using an Odroid C1 board.
lewmur said:
I just tested a regular class 10 card and a UHS-1 card. Both tested at 9mb write and 40mb read. The same UHS-1 card tested over 40mb write using an Odroid C1 board.
Click to expand...
Click to collapse
I suppose that means that using anything above class 10 is irrelevant?
wirelesskebab said:
I suppose that means that using anything above class 10 is irrelevant?
Click to expand...
Click to collapse
No, that means that "class" classification is outdated. Fast cards (read and write) bear the UHS-I "U3" classification, "U1" is slower.
In future, only buy U3 cards, like the SanDisk Extreme family.
saintsimon said:
No, that means that "class" classification is outdated. Fast cards (read and write) bear the UHS-I "U3" classification, "U1" is slower.
In future, only buy U3 cards, like the SanDisk Extreme family.
Click to expand...
Click to collapse
I guess you missed the part where I stated that the UHS card had a write speed of 40mb using the Odroid C1 board. Obviously, when it only writes 9mb in the S2, then the S2 itself doesn't support the higher speeds. So, no matter ability the card has, if the device's bus doesn't support the higher speed, then the card's ability is meaningless. Any card you use is going to be limited by the bus speed of the device.
Paying extra for a better card is pointless if the device doesn't support the higher speed.
lewmur said:
I guess you missed the part where I stated that the UHS card had a write speed of 40mb using the Odroid C1 board. Obviously, when it only writes 9mb in the S2, then the S2 itself doesn't support the higher speeds. So, no matter ability the card has, if the device's bus doesn't support the higher speed, then the card's ability is meaningless. Any card you use is going to be limited by the bus speed of the device.
Paying extra for a better card is pointless if the device doesn't support the higher speed.
Click to expand...
Click to collapse
This was what I meant, I'll make sure to buy a decent one but not the "best". Quick question, how are the internal memory write speeds? Actually, what card should I get then? How fast is the internal memory write speeds? Thanks!
Just tested the 32 GB SanDisk Extreme (U3 but not an Extreme Plus or Pro) in my T815 with the "A1 SD Bench" app:
read 59,70 MB/s or 61,04 MB/s, write 22,75 MB/s or 24,70 MB/s. The second numbers are the result of using the "accurate mode" of the test app.
saintsimon said:
Just tested the 32 GB SanDisk Extreme (U3 but not an Extreme Plus or Pro) in my T815 with the "A1 SD Bench" app:
read 59,70 MB/s or 61,04 MB/s, write 22,75 MB/s or 24,70 MB/s. The second numbers are the result of using the "accurate mode" of the test app.
Click to expand...
Click to collapse
Wat?! Is it possible that the LTE version (T815) vs T810 has a different card reader? If not happy days!
wirelesskebab said:
This was what I meant, I'll make sure to buy a decent one but not the "best". Quick question, how are the internal memory write speeds? Actually, what card should I get then? How fast is the internal memory write speeds? Thanks!
Click to expand...
Click to collapse
Why don't you install the A1 SD Benchmark from the Play Store and test your own cards? My internal storage rates 50mb write and 160 read.
Hi,
I'm considering this microSD for my new tablet s2, do you think is good quality?
http://www.amazon.it/Memoria-SanDisk-Android-MicroSDXC-Adattatore/dp/B010Q57S62/
nephtys59 said:
Hi,
I'm considering this microSD for my new tablet s2, do you think is good quality?
http://www.amazon.it/Memoria-SanDisk-Android-MicroSDXC-Adattatore/dp/B010Q57S62/
Click to expand...
Click to collapse
I am using this SanDisk 128 GB Micro SDXC UHS-1 / Class 10 card and it works fine! The price/performance is good.
In germany (Amazon.de) you can get the card for 33 € (+shipping costs).
nephtys59 said:
Hi,
I'm considering this microSD for my new tablet s2, do you think is good quality?
http://www.amazon.it/Memoria-SanDisk-Android-MicroSDXC-Adattatore/dp/B010Q57S62/
Click to expand...
Click to collapse
For our fast S2, this one is too slow in writing. Class 10 means only fast reading.
You better choose a Samsung or SanDisk with the "U3" designation, which means fast writing, like this:
http://www.amazon.it/Scheda-Memoria...sr=1-5&keywords=sandisk+extreme+pro+microsdxc
FOR EVERYBODY :
I have bought a LEXAR 633x 200GB !!!
And it works !
Speed : read 95Mo/s write : 40Mo/s
For 90$, it do the job very well !
The only better sdcard is the 256GB SAMSUNG but it's out of price !
​
So a higher performance card or 200GB eill make the tab s2 go faster then? What amount of storage and sd card do you recommend?
It won't make the tab S2 go faster. But it will allow faster read/writing to higher performance sd card compared to a regular one. The S2 can only go as fast as it's hardware can, with or without a microsd card.
Figured I'd share my results with my 2015 S2 8.0 (SM-T710). Right now I have a Samsung EVO Pro (U1) 64GB in my tablet and it does ok, but I'm just about to upgrade it to a new 128GB EVO PLUS (U3) card so got some results below. Note the previous 32GB card I had was waay worse, much older and only did 4MB/sec on writes (forgot the brand) but things have at least come a long way in the years since.
Results as follows...
Samsung EVO Pro 64GB (U1) - 70.53MB/sec Read - 72.86MB/sec Write (Fresh Format)
Samsung EVO Plus 128GB (U3) - 69.91MB/sec Read - 43.40MB/sec Write (Fresh Format)
Samsung EVO Pro 64GB (U1) - 70.07MB/sec Read - 17.81MB/sec Write (Only 4.9GB Free)
Samsung EVO Plus 128GB (U3) - 63.08MB/sec Read - 27.12MB/sec Write (Only 65.9GB Free)
For the heck of it tried the transfer rates on the PC for the 2 cards as well.
Samsung EVO Pro 64GB (U1) - 86.85MB/sec Read - 80.77MB/sec Write (Fresh Format)
Samsung EVO Plus 128GB (U3) - 87.04MB/sec Read - 82.27MB/sec Write (Fresh Format)
Though got to say while cards neck and neck, small file writes where 5x greater on the new U3 card (.5MB/sec vs 2.5MB/sec) on 4k writes.

Maximum Micro SD Card worth buying?

I believe that all micro sd speed classes work with the HTC 10:
UHS-I U1, UHS-I U3 and UHS-II U3 (the fastest available).
But the whats the maximum speed this Snapdragon 801 SOC allows? What´s the maximum speed supported, when the SOC reaches it´s top speed?
Could someone with any of these these cards please perform a speed read and write test so we can see if it´s worth buying the fastest available or not?
Cheers
HTC 10 uses a snapdragon 820, not 801.
I believe the maximum card it will take is 2TB.
Sent from my HTC 10 using Tapatalk
Double post
Sunmisola said:
HTC 10 uses a snapdragon 820, not 801.
I believe the maximum card it will take is 2TB.
Sent from my HTC 10 using Tapatalk
Click to expand...
Click to collapse
Correct, 820 SOC, sorry.
My question was regarding the speed and not storage size. I just confirmed that the snapdragon 820 it's compatible with the UHS-II cards (they have a second row of pins) but only work at UHS-I speeds.
Cheers
Oh sorry, I guess I should slow down to read. Yeah I never really knew what speed was supported, I just use a Samsung Evo UHS 2
Sent from my HTC 10 using Tapatalk
Sunmisola said:
Oh sorry, I guess I should slow down to read. Yeah I never really knew what speed was supported, I just use a Samsung Evo UHS 2
Sent from my HTC 10 using Tapatalk
Click to expand...
Click to collapse
The faster ones? Can you please do a speed test?
Cheers
If you have a look at the XDA review of the 10 you'll see it has one of the fastest sd slots on the market, I confirmed this by using a1 sd bench testing my 128gb Sandisk Extreme which gave me 86.60mb/s read and 57.47mb/s write, essentially maxing out the card, whilst internal memory gave me 226.41mb/s read and 35mb/s write (likely due to encryption). Copying from internal to micro sd copied at a consistent 55-60mb/s as well which is top for a phone.
Really impressed overall, I had a whole heap of issues with slow NAND on my one x and to a much lesser extent m8 (slow sd slot), but the 10 provides a great experience in these areas. So in short, go for the fastest card you can afford, the 10 will be able to take advantage of the extra speed, I personally went through quite a few cards and recommend the 128gb Sandisk Extreme for $60 AUD (60/90) or 128gb Toshiba u3 (30/80) for $40 AUD, otherwise the Samsung cards are pretty bullet proof but 4k video might stutter on the Evo cards and below due to slow write (20-25mb/s tops).
ryanjsoo said:
If you have a look at the XDA review of the 10 you'll see it has one of the fastest sd slots on the market, I confirmed this by using a1 sd bench testing my 128gb Sandisk Extreme which gave me 86.60mb/s read and 57.47mb/s write, essentially maxing out the card, whilst internal memory gave me 226.41mb/s read and 35mb/s write (likely due to encryption). Copying from internal to micro sd copied at a consistent 55-60mb/s as well which is top for a phone.
Really impressed overall, I had a whole heap of issues with slow NAND on my one x and to a much lesser extent m8 (slow sd slot), but the 10 provides a great experience in these areas. So in short, go for the fastest card you can afford, the 10 will be able to take advantage of the extra speed, I personally went through quite a few cards and recommend the 128gb Sandisk Extreme for $60 AUD (60/90) or 128gb Toshiba u3 (30/80) for $40 AUD, otherwise the Samsung cards are pretty bullet proof but 4k video might stutter on the Evo cards and below due to slow write (20-25mb/s tops).
Click to expand...
Click to collapse
Thanks for your answer. I just ordered the Samsung Evo PLUS UHS-I U3 64Gb since it has faster random write speeds than the PRO, even costing less. Sequential speed is slower, though. http://www.jeffgeerling.com/blogs/jeff-geerling/raspberry-pi-microsd-card which is important if you want to format it has adoptable storage.
So you have a UHS-I U3 Speed Class card, correct?
But you do know that UHS-II U3 cards do not work faster than at UHS-I speeds, right? It's important that people know the extra row of pins which enables it to work at 150mbs and more does not currently work with any smartphone on the market. I say this because they are very expensive and you can only take advantage of that speed when using it with an adapter connected to a PC. So buying it is kind of wasting money since they are much more expensive.
Cheers
investing here...
Badelhas said:
Thanks for your answer. I just ordered the Samsung EVO UHS-I U3 64Gb since it has faster random write speeds than the PRO. http://www.jeffgeerling.com/blogs/jeff-geerling/raspberry-pi-microsd-card which is important if you want to format it has adoptable storage.
So you have a UHS-I U3 Speed Class card, correct?
But you do know that UHS-II U3 cards do not work faster than at UHS-I speeds, right? It's important that people know the extra row of pins which enables it to work at 150mbs and more does not currently work with any smartphone on the market. I say this because they are very expensive and you can only take advantage of that speed when using it with an adapter connected to a PC. So buying it is kind of wasting money since they are much more expensive.
Cheers
Click to expand...
Click to collapse
So you ended up getting the 10 Badelhas? Hope you're enjoying the phone if you did.
Yep, I'm using a U3 (30mb/s min write), UHS-I card, it does NOT have the extra pins that enable faster performance that UHS-II cards have. You're right, UHS-II cards are far too expensive anyway and the 10 doesn't support them. Honestly wouldn't recommend using adoptable storage, it'll really slow the phone down since the performance becomes bound by the slower memory (the card), even with my Extreme card, performance was noticeably worse, at least in my experience. Pretty much the only benefit of using adoptable storage is for installing games/apps, but if you need it, I can't stop you (as much as I would like to).
ryanjsoo said:
So you ended up getting the 10 Badelhas? Hope you're enjoying the phone if you did.
Yep, I'm using a U3 (30mb/s min write), UHS-I card, it does NOT have the extra pins that enable faster performance that UHS-II cards have. You're right, UHS-II cards are far too expensive anyway and the 10 doesn't support them. Honestly wouldn't recommend using adoptable storage, it'll really slow the phone down since the performance becomes bound by the slower memory (the card), even with my Extreme card, performance was noticeably worse, at least in my experience. Pretty much the only benefit of using adoptable storage is for installing games/apps, but if you need it, I can't stop you (as much as I would like to).
Click to expand...
Click to collapse
No, I still haven't bought the 10, still debating. I have an old class 10 32gb micro sd card on my HTC one m8 and since I ordered a new Samsung 850 EVO 250gb SSD for my pc I thought "what the heck, I'm ordering a new, bigger and faster micro sd card". Impulse buying, I know ? But it only cost 18 euros.
I hope that my HTC One M8 is able to take advantage of the faster speed of the card but that user's post made me think I probably won't
I've just realized that the samsung evo+ I ordered is a UHS-I U1 card and not a U3 speed class so I just canceled my order.

MicroSD Speed for this phone?

It has been a while since I've needed to get a MicroSD card for a phone. As you all know, the 512 GB option is out of stock and the only thing I was able to get my hands on was a 128 GB version of the S20 Ultra. Company paid for it.
What MicroSD speed is recommended for this phone? Am I looking at getting at least V60 to be able to use this phone appropriately? What would give me an "internal storage" experience? I didn't always have great experiences with removable storage on phones with lag, but this was years ago when speeds weren't even close to what we have today.
Advice is appreciated. Thank you!
reviad said:
It has been a while since I've needed to get a MicroSD card for a phone. As you all know, the 512 GB option is out of stock and the only thing I was able to get my hands on was a 128 GB version of the S20 Ultra. Company paid for it.
What MicroSD speed is recommended for this phone? Am I looking at getting at least V60 to be able to use this phone appropriately? What would give me an "internal storage" experience? I didn't always have great experiences with removable storage on phones with lag, but this was years ago when speeds weren't even close to what we have today.
Advice is appreciated. Thank you!
Click to expand...
Click to collapse
How much storage space do you need? Size matters! Write Speed matters when you're shooting 4K Hi-Def Videos or Burst Photos. The Lexar Professional 1800x U3 microSD is very fast at a reasonable price as well. It's 128GB has all the speed you'll ever need and the smaller 64GB is even faster!
varcor said:
How much storage space do you need? Size matters! Write Speed matters when you're shooting 4K Hi-Def Videos or Burst Photos. The Lexar Professional 1800x U3 microSD is very fast at a reasonable price as well. It's 128GB has all the speed you'll ever need and the smaller 64GB is even faster!
Click to expand...
Click to collapse
I think an additional 128 GB would do the trick.
Looks like the 1800x is a v90 card, correct? Are v90 speeds comparable to internal storage speeds?
reviad said:
I think an additional 128 GB would do the trick.
Looks like the 1800x is a v90 card, correct? Are v90 speeds comparable to internal storage speeds?
Click to expand...
Click to collapse
Yes it's v90 rated. I've yet to experience an SD or MicroSD which processes as quickly as Internal Storage. How much of a lag is dependent on File Type, MicroSD Capacity and Card Speed. I fly often and enjoy watching movies on my device and paying considerably more for High Capacity Internal Storage isn't compelling.
I also put every file possible on the MicroSD. I don't have faith in Cloud Storage Security and if for any reason my device malfunctions I won't sacrifice any data, plus whenever I upgrade a device I can forego time consuming file transfers. Movies are petty large files so I use a 512GB MicroSD which isn't as fast as a lower capacity card. When I open the file I experience a couple of seconds of lag. For me it's a non issue when I take into consideration all of the advantages.
reviad said:
I think an additional 128 GB would do the trick.
Looks like the 1800x is a v90 card, correct? Are v90 speeds comparable to internal storage speeds?
Click to expand...
Click to collapse
No where near close. the 1800X is ok but I returned it as the speeds didn't match enough of the lower model(s) at the price point. Better to buy the higher internal storage model, but obviously may be too late.
I benchmarked the internal memory in my S20U 512GB against my 512GB Samsung EVO Plus microSD card. The results show that a microSD will not come close to the performance of the phone's internal memory.
Internal memory
Read: 1000.13 MB/s
Write: 384.36 MB/s
Samsung EVO Plus 512BGB MicroSD
Read: 72.27 MB/s
Write: 45.47 MB/s
varcor said:
How much storage space do you need? Size matters! Write Speed matters when you're shooting 4K Hi-Def Videos or Burst Photos. The Lexar Professional 1800x U3 microSD is very fast at a reasonable price as well. It's 128GB has all the speed you'll ever need and the smaller 64GB is even faster!
Click to expand...
Click to collapse
Sleepycat3 said:
I benchmarked the internal memory in my S20U 512GB against my 512GB Samsung EVO Plus microSD card. The results show that a microSD will not come close to the performance of the phone's internal memory.
Internal memory
Read: 1000.13 MB/s
Write: 384.36 MB/s
Samsung EVO Plus 512BGB MicroSD
Read: 72.27 MB/s
Write: 45.47 MB/s
Click to expand...
Click to collapse
Thanks. That's a UHS-I card, so it will be slower than the Lexar 1800x, which is UHS-II However, it really gives me an idea of differences that I can expect. Thank you for posting that.
I think I'm going to go with the Lexar 1800x and hope for the best.
shollywood said:
No where near close. the 1800X is ok but I returned it as the speeds didn't match enough of the lower model(s) at the price point. Better to buy the higher internal storage model, but obviously may be too late.
Click to expand...
Click to collapse
What did you get instead of the 1800x?
Sent from my SM-G965U1 using Tapatalk
reviad said:
Thanks. That's a UHS-I card, so it will be slower than the Lexar 1800x, which is UHS-II However, it really gives me an idea of differences that I can expect. Thank you for posting that.
I think I'm going to go with the Lexar 1800x and hope for the best.
Click to expand...
Click to collapse
You will need to check that the S20 supports UHS-II. I have not been able to find any confirmation that it does (it would be a great marketing advantage if it did, so I don't think it would have been a hidden feature), so I don't think it does. When you use a UHS-II card in a UHS-I device, the speed will default back to UHS-I because it is missing the extra pins required for UHS-II.
Sleepycat3 said:
You will need to check that the S20 supports UHS-II. I have not been able to find any confirmation that it does (it would be a great marketing advantage if it did, so I don't think it would have been a hidden feature), so I don't think it does. When you use a UHS-II card in a UHS-I device, the speed will default back to UHS-I because it is missing the extra pins required for UHS-II.
Click to expand...
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You were right. I was incorrectly assuming that a phone at this price point would support UHS-II, but it does not. Well, that will save me a few bucks while forcibly sacrificing speed
reviad said:
I think an additional 128 GB would do the trick.
Looks like the 1800x is a v90 card, correct? Are v90 speeds comparable to internal storage speeds?
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reviad said:
What did you get instead of the 1800x?
Sent from my SM-G965U1 using Tapatalk
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Lexar 633X, almost the same speeds, nothing noticeable in difference, benchmarking was like .3 difference
Sleepycat3 said:
You will need to check that the S20 supports UHS-II. I have not been able to find any confirmation that it does (it would be a great marketing advantage if it did, so I don't think it would have been a hidden feature), so I don't think it does. When you use a UHS-II card in a UHS-I device, the speed will default back to UHS-I because it is missing the extra pins required for UHS-II.
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UHS-II does allow faster file transfer on the S20 than UHS-I which I appreciate since I'm constantly uploading new movies. 270 MB Read, 250 MB Write with the Lexar 1800x which is around three times the speed of most UHS-I Cards. Will it give you Internal Storage speeds? External Memory Cards will likely never approach that lofty goal.
varcor said:
UHS-II does allow faster file transfer on the S20 than UHS-I which I appreciate since I'm constantly uploading new movies. 270 MB Read, 250 MB Write with the Lexar 1800x which is around three times the speed of most UHS-I Cards. Will it give you Internal Storage speeds? External Memory Cards will likely never approach that lofty goal.
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Would love to see a the speedtest of the Lexar 1800x UHS-II in the S20. If the main purpose is to upload movies into the card while on the PC through a UHS-II reader, then yes, there are speed benefits there. But it depends on the usage and how time critical that task is. When uploading from PC to the microSD card using a reader on your desktop, there is the opportunity to begin the upload into the MicroSD card, go away to grab a snack or dinner or breakfast. By the time you come back, it is all done. A different usage situation would be to copy directly into the MicroSD card while it is in your phone, so that would definitely benefit from higher speeds as you won't be able to use or bring your phone with you while it is copying.
The other interesting card for the S20 would be A2 rated cards. These have 4 times higher random write and almost 3 times higher random read IOs compared to A1 which in turn is better than not A rated cards. These would benefit if you were running apps off your microSD card. My Samsung Evo Plus 512GB performs almost at A1 levels, but way lower than A2.
reviad said:
It has been a while since I've needed to get a MicroSD card for a phone. As you all know, the 512 GB option is out of stock and the only thing I was able to get my hands on was a 128 GB version of the S20 Ultra. Company paid for it.
What MicroSD speed is recommended for this phone? Am I looking at getting at least V60 to be able to use this phone appropriately? What would give me an "internal storage" experience? I didn't always have great experiences with removable storage on phones with lag, but this was years ago when speeds weren't even close to what we have today.
Advice is appreciated. Thank you!
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If you wanna your micro sd speed to be as similar to the internal memory u need to use UFS Memory
https://www.samsung.com/us/computing/memory-storage/memory-cards/ufs-memory-card-128gb-mb-fa128g-am/
UFS is not supported on S20 .... so sad but it's true...
Sleepycat3 said:
Would love to see a the speedtest of the Lexar 1800x UHS-II in the S20. If the main purpose is to upload movies into the card while on the PC through a UHS-II reader, then yes, there are speed benefits there. But it depends on the usage and how time critical that task is. When uploading from PC to the microSD card using a reader on your desktop, there is the opportunity to begin the upload into the MicroSD card, go away to grab a snack or dinner or breakfast. By the time you come back, it is all done. A different usage situation would be to copy directly into the MicroSD card while it is in your phone, so that would definitely benefit from higher speeds as you won't be able to use or bring your phone with you while it is copying.
The other interesting card for the S20 would be A2 rated cards. These have 4 times higher random write and almost 3 times higher random read IOs compared to A1 which in turn is better than not A rated cards. These would benefit if you were running apps off your microSD card. My Samsung Evo Plus 512GB performs almost at A1 levels, but way lower than A2.
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I did a speed test on the 1800 already, nowhere close to what Varcor is claiming. Perhaps he/she can post proof of those speeds? Here is mine:

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