Develop Bugs

Confused about MicroSDHC speed, performance, and adapters

I hope I posted this in the right section, I wasn't sure where a question about MicroSDHC cards would go here.
By the way, I live in the US.
I have been Googling this for days now, and coulden't find any conclusive information, especially since most of it was from random tech blogs and not respected tech/research sites.
I am looking to buy two MicroSDHC cards to use in a Photofast CR-5400 ( http://www.amazon.com/PhotoFast-CR-5400-MicroSD-Adapter-Dual/dp/B001I0T92Q ), speed and performance are pretty important as I will he handling a lot of data through it.
First of all before I start, anybody familiar with this adapter? Where would be the best place to purchase one so I don't wind up with a Hong-Kong bootleg? Ive had trouble purchasing flash memory online before from places like Amazon or Ebay where the memory was a bootleg that didn't perform anything like the real thing.
Now, I know that Memory Stick Pro DUO devices are generally faster than SD or SDHC devices, but AFAIK that device sets them up in a RAID 0 configuration so I am hoping that will help, this is why im trying to get the best performance MicroSDHC cards I can afford. And trying to get reliable information on these things has been a lesson in confusion.
First of all, it almost seems like the class speeds don't matter. Ive seen benchmarks that showed class 4 or class 2 cards outperform a class 6. Whats the point of these classes if they are so meaningless? How can a class 2 device have faster write speeds than a class 6? And is this classification only for writing or reading too? Why are the "ultra" models of some cards, which are supposed to be very high speed, listed as class 4?
Second, I heard that there are other variables that usually are not listed anywhere, such as Random Access Times, which from what I read are internal processes taking place in the card itself rather than having anything to do with the card reading/writing to whatever it is plugged into. And I really have no idea what else could be a factor.
I was looking at THIS Transcend card ( http://www.newegg.com/Product/Product.aspx?Item=N82E16820208475 ) mainly because the previous 8GB version ( http://www.newegg.com/Product/Product.aspx?Item=N82E16820208453 ) seems to be the best one you can possibly get, the 8GB model is class 6, rated as very high speed, and even has a low Random Access Time. But that doesn't mean that just because the previous model was good, the next one will be of the same quality, and on top of that I don't know if it'll even matter in that Photofast adapter or not. Not to mention its kinda pricey, don't forget that I will need to buy two as well as the adapter (though since the 16GB Memory Sticks came out at over $200 and they are barely around $100 now, and the 32GB still isn't out yet, I am going to assume it will still be at least $50 cheaper than just buying a 32GB Memory Stick............ when they come out).
So what would you recommend I do? Where can I find information that makes sense of this? Where can I find good benchmarks/testing done on these cards that on top of speed measures the other factors as well? Where would be the best place in the US, retail or online, to purchase such a 16GB MicroSDHC card for the best price?
Thank you for your time.

what are you using the Memory card for? (what application, video/photo taking, loading applications...)
Class X just says the minimum write speeds on an empty(defragmented) card... 2 means 2MB/s write, 4 means 4MB/s etc...
some SDHC cards also come with another rating... 133x that says max 20MB/s speed, depending on the manufacturer, that may be write or read speed
best place to buy is directly from Newegg/Tigerdirect, or from Amazon fulfilled by Amazon itself or a reputable merchant

paperWastage said:
what are you using the Memory card for? (what application, video/photo taking, loading applications...)
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As I said, I will be using it in my PSP.

Patriot 8gb class 4- very slow from pc to card ???
Anyone having any current luck with Patriot 8GB Class 4 micro sd's?
I copied everything from my PNY 2GB to my netbook. Very quick as expected...
Formatted the Patriot FAT32. Tried to copy back to the 8GB from the netbook and it was painfully slow. So slow it is not usable.
Both pc and Tilt recognizes the Patriot as 8gb.
Anyone having similar problems or any suggestions?

Possible formatting issue... No more Patriot SDHC.
I think I got it...
Took about 12-15 minutes to copy back to card.
It appears to be a formatting problem with the XP fomatting.
Used this... http://www.sdcard.org/consumers/formatter/
Tried the Wife's new HP laptop (school issued) last night and had the same problem. That pointed me to a possible card issue.
Moral of the story- google is your friend.
Just to be safe, I would stay away from Patriot's 8GB C4 cards.

I would just try another brand of microsd card. Sandisk are reputable but usually the most expensive, though on amazon 8gb cards can be had for less than 20 bucks. Kingston is another good brand.

[Q] SDHC class ratings?

I have a question for anyone well informed on SDHC class ratings.
I have been leaning towards purchasing a 32gb microsd card for my adam. My question is–would a class 10 be worth the extra $40-50 compared to a lower class?
The main pro i have seen spoken of is the rate of transfer is greatly increased with the higher class rating. Other than that what would a basic music listener, e-book reader, or movie viewer gain from a higher class?
I’m used to going out and getting the best there is only to be faced with the fact that the best at the moment is not always the best for me or my pocket book… lol
Regards
Jason

Delete.....

JSZESZE said:
I have a question for anyone well informed on SDHC class ratings.
I have been leaning towards purchasing a 32gb microsd card for my adam. My question is–would a class 10 be worth the extra $40-50 compared to a lower class?
The main pro i have seen spoken of is the rate of transfer is greatly increased with the higher class rating. Other than that what would a basic music listener, e-book reader, or movie viewer gain from a higher class?
I’m used to going out and getting the best there is only to be faced with the fact that the best at the moment is not always the best for me or my pocket book… lol
Regards
Jason
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Sounds like you could use a real answer. The things that you want to do with it when you are already loaded up and using it will not make a difference. But if you were to make a backup of that 32gb card at a class 2 you will be waiting a LONG time. You should at least get a class 4 and shoot for a 6. Not sure they have a 6 for the 32gb yet but they have a 4.

Thanks for the answer. That's what i figured would be the issue

roscoenr said:
Your not going to find a class 10 32gd micro sd do your fine
Sent from my unrEVOked using xda app
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O really?
http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER

JSZESZE said:
O really?
http://www.amazon.com/gp/product/B00...=ATVPDKIKX0DER
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Broken link
I was not trying to be an ass sorry it came off that way
Looks like lexar just released the class 10 today so I was wrong. Using the card on the phone you will not see much difference. The difference will be when you are trying to use it on your computer like chogardjr said. And even when it is mounted to your computer with your phone you will not see the full performance from it but you should still see a good boost of speed from it.

Personally I would pick speed over size every time, my 16 has been full for awhile but I'm waiting for real class 6/10 32gbs to drop before buying a bigger one.
There are a few card makers out there who will straight up lie about it though so be weary of them.... dont even bother looking on ebay.

chogardjr said:
You should at least get a class 4 and shoot for a 6.
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I concur. For the average consumers use a class 6 is ideal. It's a great balance of cost and speed.
My personal opinion, only camcorders and cameras with rapid shot capabilities will benefit from a class 10 or higher at this point. Yes, you can copy your mp3s to and from it faster... but how often are you pressed for time when you're doing that operation? My guess would be not often. (For me that's a "I'm home for the night" operation, so it can take as long as it needs)

Thanks for the insight once again fellas. I found a 32gb class 4 on amazon.com for $64.99 it's made by dane. Up until just recently I have never heard of the company but when school started last semester I bought a few 8gb usb sticks made by the same company.....(think I purchased them from target rather cheap) nonetheless I was extremely happy with the performance from a budget flash drive so I took a dive at it.
I'm anticipating the excitement off inserting it into my new Notion Ink "Adam" when it arrives later this month.... Santa came late this year.
Hopefully it will live up to all the buzz just as the Evo did. I've always been first to dive head first into gadget hype. Never has it lived up to the excitement #facepalm (palm pre) until the Evo. Now hopefully the "Adam" will do the same.
Sent from my Evo using XDA App

micro SD card

I can't wait to chuck my iPhone for my first Android!
Maybe I'm being too anal here but which micro SD cards will you be using?
Will a Class 10 be significantly faster than lower classes?
How are lesser name brands like Memorette? I'm looking through eBay and these are much cheaper than SanDisk and Lexar.

I prefer sandisk over other brands as had bad experienxe with lexar but its just me.
And yes class 10 would be faster.

...although Class 2 will likely be fine for every purpose in the phone, I'll be testing my Class 2 Sandisk 32GB with mine in my review for Clove's blog.

Got a Joyflash Class 10 16GB got it for less than £18 and speeds exceed over Class 10 on read and write very good for the price.

How does it benchmark? Would be interested to see some crystal disk numbers for it...
I'd tend to advise sticking with Sandisk myself...

NZtechfreak said:
How does it benchmark? Would be interested to see some crystal disk numbers for it...
I'd tend to advise sticking with Sandisk myself...
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This is the one I have: Big thread here:
http://forum.xda-developers.com/showthread.php?t=1000894

Pretty nice benchmarks, although for smaller and random writes the speeds drop off a bit (these are closer to actual in-phone use, with the exception of large sequential read/write things like video recording). The 512k write test is slower than my Sandisk Class 2 card, so its not all peachy, but for the price that looks like a steal - I suppose they don't make 32GB cards?

NZtechfreak said:
Pretty nice benchmarks, although for smaller and random writes the speeds drop off a bit (these are closer to actual in-phone use, with the exception of large sequential read/write things like video recording). The 512k write test is slower than my Sandisk Class 2 card, so its not all peachy, but for the price that looks like a steal - I suppose they don't make 32GB cards?
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Not yet! Would love a bigger card but cost too much ££!

Looks like there is opening for bloggers to test and review microsd cards
Sent from my HTC Hero using XDA App

nikzDHD said:
Got a Joyflash Class 10 16GB got it for less than £18 and speeds exceed over Class 10 on read and write very good for the price.
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That looks sweet but I have no idea how to purchase that as I'm in the U.S. The only ones I see are the 8GB version on Amazon.co.uk and the one from eBay but they don't seem to ship here.
Where else can I purchase one?
Do they even have a 32GB?

I picked up one of these, havent tested it yet but thought it looked a good buy.
http://www.ebuyer.com/product/218439

So does anyone know what class speed is optimal for this phone?
For original galaxy s users, was there a plateau in speed reading/writing after a certain class/

Bought a "ADATA Turbo microSDHC 32GB" (http://geizhals.at/deutschland/a610468.html) and it seems pretty fast. Testet with a kingston usb reader (http://geizhals.at/deutschland/a432624.html).
Don't know if it work with SGSII yet.
View attachment 579619

NZtechfreak said:
...although Class 2 will likely be fine for every purpose in the phone, I'll be testing my Class 2 Sandisk 32GB with mine in my review for Clove's blog.
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Surely Class 2 would be too slow for HD video recording?

AaronUK said:
Surely Class 2 would be too slow for HD video recording?
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Thats the question I want to answer. Its fine for 720p video recording, since I use it in my SGSI right now, whether its still good enough for 1080p is the question. The Class 2 Sandisk writes at 5.5MB/s for sequential writes, which may still be enough for 1080p. Will know soon enough one way or the other.

I'm considering a 32gb Class 4 Sandisk from eBay, but don't really want to buy it until we've worked out if it's going to be suitable. I imagine it'll be fine, but still...

From Ebay? You're sure its genuine? I don't see Class 4 Sandisk cards listed at Sandisk's own website, or at any of the retailers they link to...

NZtechfreak said:
From Ebay? You're sure its genuine? I don't see Class 4 Sandisk cards listed at Sandisk's own website, or at any of the retailers they link to...
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Fairly sure, but as always not 100%. The seller in question sells masses of SD cards and they're quite well known for being legit. Plus a few people on other forums have bought them and vouched for them.
Still, can't be certain though
Here's the link: http://cgi.ebay.com.au/SanDisk-32GB..._Electronics_Memory_Cards&hash=item2c59008a55
EDIT: Although the picture shows Class 2, but it mentions Class 4 in the description...

what about this one? £12.45 32gb sandisk
http://cgi.ebay.co.uk/100-32GB-Micr...1?pt=LH_DefaultDomain_205&hash=item3cb75af7b5

How about this?
http://www.amazon.co.uk/Lexar-32GB-...2ZTM/ref=sr_1_1?ie=UTF8&qid=1304244962&sr=8-1

Today only! Amazon Goldbox Samsung micro sd's!

Just found this, figured I'd share. Definitely ordering a 64 for my c6906!
Samsung 64gb plus class 10, amazon daily deal!
http://www.amazon.com/gp/product/B00I4ZMNY4/ref=gno_cart_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER

The Driv3r said:
Just found this, figured I'd share. Definitely ordering a 64 for my c6906!
Samsung 64gb plus class 10, amazon daily deal!
http://www.amazon.com/gp/product/B00I4ZMNY4/ref=gno_cart_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER
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will totally buy the one from sony at this price.

All the 64's are gone, only 32's left!

I can't tell if this is a good deal, I got my 64Gb Class10 UHS-I Samsung for 15$ shipped brand new.

Vanarian said:
I can't tell if this is a good deal, I got my 64Gb Class10 UHS-I Samsung for 15$ shipped brand new.
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where did you get 64GB class 10 for 15$?

Vanarian said:
I can't tell if this is a good deal, I got my 64Gb Class10 UHS-I Samsung for 15$ shipped brand new.
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If it's from ebay, my bet would be its a knockoff for that price. Post up some read write speeds, if there legit I'll be 3 for that price!

The Driv3r said:
If it's from ebay, my bet would be its a knockoff for that price. Post up some read write speeds, if there legit I'll be 3 for that price!
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What are you ready to bet ?
Tell me how to do the write/read speed test and I'll post it. But for how it works for me, it is not a defective unit nor a copy. Files transfer operates flawlessly, recording videos and taking pictures works like a charm. Mounting a 1go iso file in ppsspp is instant loading, no delay or lag.
I got it from Ebay France (usually run through fr, UK and DE) by auction. Brand new and sealed. That's why I was saying that I don't know if Amazon was making a good deal or not.
To let you imagine, I paid 100 euros for an Optoma Hd700 worth +-700€ back then, and whenever I search something I get my hands on bargains almost every time. Getting a Micro SDXC UHS class 10 for 15$ is like daily route

Vanarian said:
What are you ready to bet ?
Tell me how to do the write/read speed test and I'll post it. But for how it works for me, it is not a defective unit nor a copy. Files transfer operates flawlessly, recording videos and taking pictures works like a charm. Mounting a 1go iso file in ppsspp is instant loading, no delay or lag.
I got it from Ebay France (usually run through fr, UK and DE) by auction. Brand new and sealed. That's why I was saying that I don't know if Amazon was making a good deal or not.
To let you imagine, I paid 100 euros for an Optoma Hd700 worth +-700€ back then, and whenever I search something I get my hands on bargains almost every time. Getting a Micro SDXC UHS class 10 for 15$ is like daily route
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I use ebay all the time but for easily replica table things I stay away. I bought my canon t4i an tons of other goodies on there
The problem with knockoff sd cards is they work but not at high functioning speeds. I run my micro sd's in my go pro all the time, the fakes can't handle the speed an they cut out at higher resolutions and frame rates. Same goes with the dslr, I can't shoot high speed shots consistently. That's why genuinely are important :laugh:
Download sd tools on the App Store, that should tell you.

The Driv3r said:
I use ebay all the time but for easily replica table things I stay away. I bought my canon t4i an tons of other goodies on there
The problem with knockoff sd cards is they work but not at high functioning speeds. I run my micro sd's in my go pro all the time, the fakes can't handle the speed an they cut out at higher resolutions and frame rates. Same goes with the dslr, I can't shoot high speed shots consistently. That's why genuinely are important :laugh:
Download sd tools on the App Store, that should tell you.
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Damn I'm so red right now, my R/W speed is stuck at 20Mo/s max, you're right I got a fake luckily I didn't pay more for this, I would be mad! I just checked and it says Taiwan, I will contact the seller to tell him what I think.
Gotta search another one now, a true one! I want my 70/40 R/W speed!

Vanarian said:
Damn I'm so red right now, my R/W speed is stuck at 20Mo/s max, you're right I got a fake luckily I didn't pay more for this, I would be mad! I just checked and it says Taiwan, I will contact the seller to tell him what I think.
Gotta search another one now, a true one! I want my 70/40 R/W speed!
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Yup, it happens all the time.
I ordered this one, http://www.amazon.com/gp/product/B00E1XI5ZO/ref=oh_details_o00_s00_i00?ie=UTF8&psc=1
I got for less on the sale yesterday but still worth it, even at that price. It all depends on what you use it for. Like I said, I need cards that read fast. If you just using it to store data then write speed isn't that big of deal unless it's under 15 a second (hd playback will have a tough time).

[Q] what micro sd ?

Hello , i have this phone about 4-5 months , it's great smartphone for its pricerange , right now i am looking for a good micro sd card ! what company ?(sandisk,samsung , tdk,etc.) and what type ? i saw the sandisk extreme plus i think with 90 mb/s read , will it make it faster on photos -videos-music , or the sandisk ultra with 30 mb/s read is good enough ?Thank you !
(It's my first post here ,so if i did any mistake ,let me know !

Hey andreas [emoji3]
I've myself been using the SanDisk ultra one for over a year now. Fact is its write speeds seem to have decreased a lil from the initial days still id vouch for it as it gives satisfactory performance.

Hi!
Firstly, you need to know how much space do you want. If you want something over 32 GB, you're going to use MicroSDXC, wich goes up to 2 TB (128 GB is the maximum you'll find, currently). SDXC needs to be reformated to FAT32 to be supported by smartphones. You may find something about it doing a quick research on Google.
On what comes to manufacturer, this article (http://us.hardware.info/reviews/4544/49-sd-and-microsd-cards-tested-theres-a-difference) is a good guide, even it's a quite 'old' (1 year) for technology standards. It basically states, after doing some tests, that Sandisk has the best quality, Samsung takes the mid-end front and some good Class 4 even outperforms some low quality Class 10. You may look upon these tests and decide on what one will fullfill your needs.
For me, a Samsung 32 GB UHS-1 would be fine. It's very fast (UHS-1 is faster than Class 10) and made by a good manufacturer. It may not be a Sandisk, but isn't so far from, anyway. Plus, we're talking about smartphone storage, which usually won't require anything so high end, like professional photographers usually do.