Develop Bugs

Memory card class

I'll go tomorrow to buy a HTC HD2. But it comes with a 2Gb microSD card that is too small for me.
I would like to buy a 8 GB or 16 GB memory card, only for the phone. Does the class really matters? I've searched and searched again, but I didn't find a good answer. It is a class 2 enough or i should go for a class 4 or class 6?
Price is also important.

What's that phrase people are always spouting off? Get the biggest/fastest that you can afford? The higher the class the faster (theoretically) the data transfer. If you look around you can get an 8GB Class 6 for about $23.

Is not so simple. A 6 class 8GB card or a class 2 16 GB card(same price)? And Ive read that it dose not matters so much the class, but i asked here for a confirmation.

I just read an article about that
It seems that the class you are talking about only applies to the writing speed it doesn't say anything about read speeds.
and since writing speed isn't that important for a smartphone you can get a class 2 because writing speeds are similar most of the time.
I got the following numbers of a dutch website tweakers.net:
here are some numbers:
The Nokia 16GB microSDHC
Class 2x
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Transcent 16GB MicroSDHC
class 6x:
Sequential Read : 14.758 MB/s
Sequential Write : 7.860 MB/s
Random Read 512KB : 14.741 MB/s
Random Write 512KB : 2.026 MB/s
Random Read 4KB : 4.506 MB/s
Random Write 4KB : 0.023 MB/s
Here is a comparison of the Nokia against the Transcent micro sdhc so you see that the nokia is:
Sequential Read : 36,11% faster
Sequential Write : 16,46% slower
Random Read 512KB : 35,20% faster
Random Write 512KB : 96,89% slower
Random Read 4KB : 18,83% slower
Random Write 4KB : 21,05% slower
So out of these benchmarks you can conclude that the higher class cards only give you better writing speeds. And the important speeds are the reading speeds on a smartphone.
I hope this helps you a bit

hy, in my knowledge HC classes are invented for DSLR cameras, because they need to be able to take 4,6 10 pics /sec, (technically write on the card big amount of data (2-3Mb even more in RAW) in seconds, for smartphones it's ok a HC 2
by the way I have a 4GB SDHC2 and it's set to recognize as a HC1 (do no why but it's faster)
hope it helped

Compare our SD cards speeds (for fun :D)

A-DATA 16GB SDHC Class 10, stock GB ROM
As for poll: Use more answers if you have more than 1 SD card, regardless if you're using it in Desire or not.

http://i1231.photobucket.com/albums/ee518/timmaaa/htchtcdesire2011-08-2417-15-51.png
Sent from my CM7.1 Desire using XDA Premium App

Class 4?
10char

About ~5.2MB/s write and ~29.3MB/s read. Used SD Tools.
I used CrystalMark yesterday and my read speeds were crap thanks to limitations.

What limitations?

Yeah class 4
Sent from my CM7.1 Desire using XDA Premium App

I tried formatting card with Desire. Never again. Writing speed went from 13 MBps to 5 MBps.

Class 4 16GB Sandisk.
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Use CrystalMark, because those speed are irrelevant for custom ROMs. Speeds that are important are with 4K files.

what allocation size , i find with 32 k on my 16gb sandisk class 4 writing speed is higher than read with 32k allocation using sd tools test on phone

With A-DATA 16 GB Class: ~ 7,7 MB/s write and ~ 19,5 MB/s read.

16GB Class 10

kingston 16gb class 4

Patriot 16GB, Class 10

Sandisk 8gb Class 2
GingerVillain 2.8 + SD Booster
View attachment 707010

The last result is really interesting. I have a 4 GB class 2 SDHC card from Sandisk and i get 9 MB/s write speed and 24 MB/s read speed; tested on my PC with the built-in card reader. I have tested two other SDHC cards, both Sandisk, one class 4 one class 6, with the same PC & reader, and they don't go over 5 MB/s (write speed) under the same testing conditions - copying a 700 MB file from the PC to the SD. Weird or what?
P.S. - All cards were fromatted under Windows 7, default allocation size.

@TVTV
I know, it's weird. Surely with a class 2 card I shouldn't be getting those kind of results???

using SD Tools,
Card: Lexar 32GB Class 10
write: 7.9MB/s
read: 25.0 MB/s
I haven't used any SD ROM Tweaks... not sure what AceMod007 uses by default.

Lexar 16gb class 6: write-7.4, read -27.7
Sent from my HTC Desire

This is my sandisk 8GB Class 4..
not bad...

32Gb Samsung Class 10 : Is this real or fake ?

I just orderd 32GB Samsung Class 10 card but i am not sure if it's real or fake
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130670421178&ssPageName=ADME:L:OC:GB:3160
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Results :/
http://www.youtube.com/watch?v=FVNshcZixKI

Soon as you receive the card, use H2testw 1.4 to test the card ( it will take some time ). If the card fails then contact the seller for a refund. If you have problems then open a dispute with Paypal ( hope you paid using Paypal ).
http://sosfakeflash.wordpress.com/2...standard-in-detecting-usb-counterfeit-drives/

The seller is top-rated 99.99%, I doubt it is fake.

I own this card and the image looks real. Ridicilously cheap though.
Sent from my GT-I9100 using xda premium

I have bought 32GB Class 4 Sandisk. It's good, it writes the data on card at 4 Mb/s in actuality
Sent from my GT-I9100

i too bought this card. couldnt belive the price either (28€). tested it, and it came close to the stats posted.
finally something good and cheap for our S2.

i have ADATA 32 GB CLASS 4 and i feels like its slow gives 5 mb write
10 to 11 mb read

i have kington 32G class it can use normal

bidboy said:
Soon as you receive the card, use H2testw 1.4 to test the card ( it will take some time ). If the card fails then contact the seller for a refund. If you have problems then open a dispute with Paypal ( hope you paid using Paypal ).
http://sosfakeflash.wordpress.com/2...standard-in-detecting-usb-counterfeit-drives/
Click to expand...
Click to collapse
it passed the test

Another 32GB Class 10 option
I found the lexar 32GB Class 10 one quite good.
Plus it comes with a free reader for that extra boost of speed coping stuff to/from it from the computer.
Search for "Lexar 32GB Micro SDHC High Speed Card with Reader - Class 10 Extreme Speed" to find it

I bought that 32Go Samsung Class 10 microSD card, and it works really fine, with 10 in writing and something like 20-25 in reading.

BadBoy4490 said:
I bought that 32Go Samsung Class 10 microSD card, and it works really fine, with 10 in writing and something like 20-25 in reading.
Click to expand...
Click to collapse
what program you used....mid to share?

dadyal said:
I just orderd 32GB Samsung Class 10 card but i am not sure if it's real or fake
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=130670421178&ssPageName=ADME:L:eek:C:GB:3160
Results :/
http://www.youtube.com/watch?v=FVNshcZixKI
Click to expand...
Click to collapse
another method u can check and find out if the card is real or fake is if u download sd card tester from goople play and that will also tell u wether its a real card or a fake 1 by validating the write and reading speeds.

Does it support UHS-1 speed?

Hey there lucky owners
Could somebody test it please, if G3 supports UHS-1 speed sdcards?
I bought this sdcard for my Note 2, but that doesn't. Would be nice know what can I expect.
Thanks in advance!
lj

liljom said:
Hey there lucky owners
Could somebody test it please, if G3 supports UHS-1 speed sdcards?
I bought this sdcard for my Note 2, but that doesn't. Would be nice know what can I expect.
Thanks in advance!
lj
Click to expand...
Click to collapse
I have the Sandisk 64GB Extreme Plus microSDXC UHS-I and it works like a charm

suljo94 said:
I have the Sandisk 64GB Extreme Plus microSDXC UHS-I and it works like a charm
Click to expand...
Click to collapse
Thanks for the reply.
How fast is it if you test it with https://play.google.com/store/apps/details?id=com.a1dev.sdbench?

liljom said:
Thanks for the reply.
How fast is it if you test it with https://play.google.com/store/apps/details?id=com.a1dev.sdbench?
Click to expand...
Click to collapse
your link is broken

suljo94 said:
your link is broken
Click to expand...
Click to collapse
I donno why. I copy-pasted
it's called: A1 SD Bench

The G3 is compatible with UHS-I (it works), but we don't know if it uses the full UHS-I speed

I'm using a Samsung Plus mSDHC UHS-I 32GB without problems. Its fast but not that I measured anything.

liljom said:
Hey there lucky owners
Could somebody test it please, if G3 supports UHS-1 speed sdcards?
I bought this sdcard for my Note 2, but that doesn't. Would be nice know what can I expect.
Thanks in advance!
lj
Click to expand...
Click to collapse
So my UHS1 card works alright, and I get quite impressive speed from it...
This is the speed I get (tested with A1 SD Bench)
Read: 84.66MB/s, Write 27.35MB/s
This is a lot more than I got with the same card in my Galaxy S4...
https://play.google.com/store/apps/details?id=com.a1dev.sdbench
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Protagoras said:
So my UHS1 card works alright, and I get quite impressive speed from it...
This is the speed I get (tested with A1 SD Bench)
Read: 84.66MB/s, Write 27.35MB/s
This is a lot more than I got with the same card in my Galaxy S4...
https://play.google.com/store/apps/details?id=com.a1dev.sdbench
Click to expand...
Click to collapse
Thanks a lot.
On new versions it changes up internal and external, but still better than my Note 2
Thank you!

So is UHS-1 worth it on G3?
This is the speed I get (tested with A1 SD Bench)
Read: 84.66MB/s, Write 27.35MB/s
This is a lot more than I got with the same card in my Galaxy S4...
Forgive my ignorance, but I'm having trouble deciding which type of SD card to get for my new G3 since there seems to be a lot of conflicting information. Is the UHS-1 card a better option (faster/better performance) over a comparable Class-10 card in the LG G3?

posted earlier on another thread. these are my speeds using a1 and the "accurate - with reboot" speed test. 44 write and 75 read. Samsung pro 64gb. same card does 72 write and 79 read in my HP zbook laptop
SD card isn't any where near the internal speeds. using camera to internal...
Sent from my LG-D855 using XDA Premium 4 mobile app

I have the same Samsung pro 64 GB but I am not getting the same read and write speed as you guys. I am getting read 42 MBps and 32 MBps. Please help. Thanks in advance.

Hunt for 64 gb MicroSD Card

I am looking for a 64 GB micro sd card for around 2k INR.....I currently ve a SanDisk 16 GB Class 4 card......I ve shortlisted 3 cards from SanDisk , Strontium and Samsung . Has anyone used any of these cards ??? I want a card with the fastest speed without breaking a bank . Each one of these is UHS-1 card . Strontium is cheapest , Sandisk is costliest . Any input would be appreciated .
Also , can anyone confirm if exFAT works with MiUi .....it works fine with CM11
Samsung Evo :
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http://www.amazon.in/gp/aw/d/B00KUK...ro+sd+card&dpPl=1&dpID=314CyRcpRdL&ref=plSrch
SanDisk Ultra :
http://www.amazon.in/gp/aw/d/B007WT...ro+sd+card&dpPl=1&dpID=414ARpG+t-L&ref=plSrch
Strontium Nitro :
http://www.amazon.in/gp/aw/d/B00HH2...ro+sd+card&dpPl=1&dpID=416D76Y7sWL&ref=plSrch
Sent from a Walkie Talkie

Bro read reviews on amazon, and choose one which is heat resistant
I'm currently using Samsung's 32GB micro SD card and its running awesome, read write speed is good.I brought it for 1300₹ two years ago
Hit that THANKS button

kalya bhau said:
Bro read reviews on amazon, and choose one which is heat resistant
I'm currently using Samsung's 32GB micro SD card and its running awesome, read write speed is good.I brought it for 1300₹ two years ago
Hit that THANKS button
Click to expand...
Click to collapse
Heat resistant....lol......our phone is a heater
Sent from a Walkie Talkie

Don't go for Strontium. Have had two of their cards go bad in a year or so. After sales service is also not that good.

Go for samsung. After sale services are good. Doesn't get heated up & data corruption like san disk

I went for Strontium. Thanks guys, for ur inputs . 59.06 GB of usable space and works well with exFat format .
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