I have 3 micro SD cards, the 4GB that came with the Desire, an 8GB which came with my Touch HD and a 6GB which I bought for my old Vario III. Will the speed of these cards make much difference to the running of the Desire, especially with apps on the SD card. Also is IO performance more important that transfer rates?
Would like to put a higher capacity card in the phone but not if it'll slow things down.
Done some quick testing of the various cards and the 4GB card that comes with the Desire is a lot slower than the other two cards. Seems the 8GB is actually the fastest at transfer speeds and has the highest IOps so I'll swap it over for that one.
Ok, well I transferred all the stuff to the other SD card and now my phone doesn't recognise any of the installed apps. Is it not as easy as transferring the files between the 2 cards?
Check The SD Class WQritten On THe Card
My 4 GB is lot faster then another 8 GB i am using
Related
I see these 66x superfast SD memory cards advertised. Will using one speed up my blue angel?
Can programs use this SD card for operating memory or can they only use the intenal memory?
Does having <5mb avaialable slow down your device?
Fast Sd Cards
Fast Sd cards are only useful for SLR Pro cameras. The rest of the devices are using normal card reader slots. i.e. even if you were to use a fast SD card in the sd card slot,you will only get the normal speed.
by rest of the devices, i mean, all pocket pcs, ppc phones, phones and such devices...... :x
moali77 is correct. it won't make much of a difference in your pda. however, if you use a card reader, or happen to have a digicam that can utilize the speed, you will be better off.
example: i played atlantis redux recently 100mb+ required to be put on your sd card. instead of copying it through activesync, i put it in my usb2.0 card reader, copied it over, in far less time than it would've taken if i did it the other way.
but if you don't plan for much of that, then don't bother paying the premium for a fast card =)
Well I bought a Kingston Elite Pro Secure Digital 1GB, think It's 7.7/8.2MB Write/read
It made my TomTom go way faster planning routes and generally give me better performance from other apps.
I dont know the Top speed for the BA SD Slot, but you should look at the speeds of the card you are planning to buy
bosjo said:
Well I bought a Kingston Elite Pro Secure Digital 1GB, think It's 7.7/8.2MB Write/read
It made my TomTom go way faster planning routes and generally give me better performance from other apps.
Click to expand...
Click to collapse
Have others experienced similar variations with different SDs?
I recently responded to Wamatt's other posting about SD cards in the BA accessories forum. In it, I've described my experiences with the SD card listed in my sig and BA speed tests I've done with it.
See http://forum.xda-developers.com/viewtopic.php?t=26903 for additional information.
Hi guys,
I'm thinking of upgrading my 512mb SD card to 2gb, but I'm not certain that the phone (Qtek 9090) will be able to work with such a large card.
Does anyone here have a 2gb card working? Any brands/models that are known to work or fail?
Thanks in advance for your help.
2gb SDCard...
Hi!
I'm currently using a 2gb SanDisk SD Card, everything works great. Oddly enough, I cannot find a card reader to connect to my PC that can read them!?!? I'm still using 2003SE and transfer movies and MP3's to the phone by using the painful multi-hour process of Exploring via ActiveSync. Uggh! This is fixed in ActiveSync 4.1 but ONLY if you are running WM5... Just having 2003SE and 4.1 will still be totally laggy for file copy.
Enjoy!
2gb SDCard...
Hi there, I also have a 2Gb Sandisk card in my XDAIIs, I also have a card reader which I purchased from PC World for £10.
Works a treat!!
Re: 2gb SDCard...
terryd1980 said:
I also have a card reader which I purchased from PC World for £10.
Works a treat!!
Click to expand...
Click to collapse
Hi! Do you have a brand name or model number of the card reader you mentioned so I can search for it on the Internet? So far I've purchased 2 different readers and neither can speak "2gb" :shock: The one I can use for 1gb cards but not 2gb cards is Belkin F5U248 rev.2, so I know that one wont work!
Thanks in advance!
Does anyone know what speed the BA supports for its SD cards?
The transfer speed is limited by the SD card type
The transfer speed should be contained within the card specification sheet
As I understand it, the maximum transfer speed is 22.5MB per second
This is for a 133X SD card, so compare accordingly
thanks for the reply. I just wanted to make sure that there wasnt a limit on the SDIO bus on the BA.
I'm planning to buy a 2gb Sandisk, but i'm not too sure whether the ultra version will work, as the compatibility list on their website only shows the standard. So i might just get the standard one to be on the safe side.
I currently use 4Gb SD card! I had only hard time finding flash card reader for my PC, which can read such a big card
I believe PPC devices has no problem with big SD cards. At least my Mio 168 PPC with GPS (PPC 2003) understand 4G card too.
But I do not believe flash manufacturers X rating. I NEVER seen real speed more than 3 Mb/s on any type of device. My card have rating x133 (22.5Mb/s). And I have no idea on what device and how did they measure that speed?
From the 2g->4gb reports it sounds like sd card size is not so much an issue for the BA, more for the SD->USB adaptor.
I have the same awful USB activesync file transfer rates reported on this thread, despite running WM5, so it sounds like my current adaptor might need upgrading.
Anyway, thanks for helping out, and I now have a 2gb 133x SD on order for next week ;-)
The typical transfer rate is 2MBps
Quotes like 133X and 150X are NOT a multiple of this but the coefficient comparison between the read and write speed
As an example for a 2MB SD card
Uploading 2MB data takes 1 second
Reading data, for that same setup, takes 1 second
For the 133X the write speed is the same, but the read time is 0.4 seconds and for the 150X card it is 0.33 seconds
This also assumes the SD interface meets SDIO v1.01
If not then the 133X and 150X cards take the same time to read as the standard card
2gb Card Reader
Hi there ottGalaen,
My card reader is made by PC Line, I think it's PC World's own brand, the Model number on the back is PCL-CR400.
Here's a link to it...
http://www.pcworld.co.uk/martprd/st...null&sm=null&tm=null&sku=818835&category_oid=
If that doesn't work just go to www.pcworld.co.uk and search for PCL-CR400
I hope this helps
Kind regards
Terry
4GB SD here with a cheapie card reader/writer. No problems at all.
2gb sd
i use a 2gb sd card sandisk with no problems
Re: 2gb SDCard...
ottGalaen said:
Hi!
I'm currently using a 2gb SanDisk SD Card, everything works great. Oddly enough, I cannot find a card reader to connect to my PC that can read them!?!? I'm still using 2003SE and transfer movies and MP3's to the phone by using the painful multi-hour process of Exploring via ActiveSync. Uggh! This is fixed in ActiveSync 4.1 but ONLY if you are running WM5... Just having 2003SE and 4.1 will still be totally laggy for file copy.
Enjoy!
Click to expand...
Click to collapse
Yo, what type of SD card that you using now (Sandisk Ultra II) ?
Just so you guys know my 4GB SD card is a Transcend 150x.
I have recently purchased an EVO 4G. I am waiting for it to come in the mail. Now I have a 4GB Class6 microSD card from my G1. Would it be better to use than the regular 8GB that comes stock with the EVO?
Well that obviously depends on whether you want 4gb of space or 8gb. The class speed really isnt that big of a deal. It isn't going to speed up anything on the phone, the only thing it will speed up is transferring files to and from the phone with usb.
Thanks man. Appreciate the helpful info.
Even class 4 has acceptable copy speed. I have to copy my music back after formatting since I have found a clean card really makes new roms install without glitches. I picked up a 32GB class 4 for $45 on ebay and it was ALOT faster to copy to than the 16GB class 2 I had previously.
Depends, if you plan to use app2sd, the faster sd is preferable. Remember, the class is the speed, higher the number, faster the read/write.
The EVO should come with an 8gig class 4 sd. I recently changed to a 16gig class 6 sd. I see no difference in speed but the extra space is nice. The difference would be really appreciated if you where changing from a class 2 or 4 to a class 8 or 10. Class 10 is the fastest I know of atm.
In your situation, keep the stock sd in the EVO unless ofc you plan to load it up with apps & media.
I look for the more reliable micro sd card with a good price
https://www.amazon.es/gp/aw/d/B06XFS5657/ref=cm_cr_arp_mb_bdcrb_top?ie=UTF8
https://www.amazon.es/gp/aw/d/B073J...6_SY340_FMwebp_QL65&keywords=sandisk+micro+sd
The best of these in your opinion?
Samsung 256 gb or sandisck 200 gb es wath is more reliable and best choice?
Thanks
I honestly think that you will be happy with either. I have cards from Samsung, Lexar (not sure they are in the SD card business any more) and SanDisk and they are all very reliable. I did have a SanDisk card break once, but I'm pretty sure that was the phone as it ate a couple of cards before I got rid of it. Speed wise you will probably find that the Micro SD cards will be very similar. For some reason full size SD cards perform much better and there is a greater difference in performance, but Micro SD less so.
Is there a large speed differance between internal and SD memory ... loading programs and data ?
Yes, huge. View attachment 4698499
Sent from my SM-T830 using Tapatalk
I have similar speeds, for the internal card.
With a 400gb SanDisk Ultra UHS-I card "up to 100MB/s" read SPEED I have a write speed that's slower, ~ 15 MB/s. Read was 80MB/s. I guess getting 80 MB/s is "up to 100MB/s"
For the fun of it, I tried my USB-C memory stick and got 73MB/s read and 15 MB/s write.
I have video on my external card, and have not had any read issues.
drjoe1 said:
I have similar speeds, for the internal card.
With a 400gb SanDisk Ultra UHS-I card "up to 100MB/s" read SPEED I have a write speed that's slower, ~ 15 MB/s. Read was 80MB/s. I guess getting 80 MB/s is "up to 100MB/s"
For the fun of it, I tried my USB-C memory stick and got 73MB/s read and 15 MB/s write.
I have video on my external card, and have not had any read issues.
Click to expand...
Click to collapse
Yea, my external microsd card is of the same lineage as yours, I bought the 200g a1 UHS-1 card and on my PC I was getting 87mbs and 40 something mbs read/write using Crystaldiskmark which is consistent with what I'm getting using the Android benchmark app. You're write speed should be higher than that. I just had an issue with an old "Ultra" card and the write sped dropped to under 10mbs. I logged onto Sandisk and they agreed that it was bad and are sending me a new one. If I were you I would use Crystaldiskmark v6 and run some tests on your PC and screen capture the results. If you continue to get write speeds like that I'd create a ticked on the Sandisk site and see if they will replace it.
Thanks for the suggestion. SanDisk is good about warranties. I had a USB Dual Micro 128gb stick they replaced when it fell apart. Recently it faulted write protect only, and they offered to replace it again, but I can't wipe it because it is read only, and it has tax return data on the stick. It's only $35ish bucks, so I'm not sure I'll send it for replacement. I was thinking later this year of upgrading from 400gb to 512gb, I may wait until then.
so If I want to get serious about running linux on the s4 I probably should upgrade to a 256gb
model
The higher-speed reads are from a "cached read" which says more about the cache speed than the internal flash speed. In Android parlance, the "Internal SD Card" is the storage partition of the internal flash, which is slower, because it's reading the flash speed, not the cache speed. The physical SD card will be listed as "External SD Card", you would need to read that, not cached, to see how they compare. There are many microSD cards available with higher speeds than the internal storage in the screenshot, so if the SD card reader on the phone can keep up with them, external SD cards may be faster at sequential reads and writes.
It isn't shown in the screenshot, but random reads and writes mater more under some use cases. The SD card will likely have much lower random read and write speed, because of the extra latency in the SD card interface.
In the screen capture, the card I have circled as the Sandisk Ultra is in fact a physical card inserted in the Tab, why on that particular benchmark is says "internal" is unknown. The Sandisk card, while not the fastest isn't bad on read for an SD card as it reads close to 100mbs when tested on my PC but is nowhere near as fast as the real internal memory, cached or not.