Best uSD card to run CM7

onurd

Senior Member
Oct 31, 2004
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I just put one of the CM nightly builds (build38) on a uSD card (sandisk 16gb class 2) and there is a major lag to even enjoy the device. I have been reading about that sometimes class numbers on the cards don't mean too much.

Which card would you recommend to run CM from (Brand/class/where to buy) from your experience?
 

cama900

Senior Member
Apr 4, 2011
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any class 6 card should be plenty enough (as long as it has enough room for the ROM and stuff) even class 4 should work much better (but still some lag i beleive, idk ive never tried it)
newegg is a pretty good place to shop for them. Heres one such card - newegg.com/Product/Product.aspx?Item=N82E16820211341&cm_re=8gb_micro_sd_card-_-20-211-341-_-Product
 

tablo

Senior Member
Jul 14, 2010
152
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Seattle
There is a long thread about this on here and the class 6 Transcend 8GB card got the most mentions for good perfomance. The probability for issues to arise increases when using cards over 8GB.

I have a class 2 Sandisk 8GB and class 6 Transcend 8GB card. They both work well.
 

victle

Senior Member
Jun 20, 2010
84
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I've got 4 uSD card: one Dane-Elec 2G no class, one Kingston 2G no-class, one Transend 4GB class 6 and one PNY 8GB class 4. All run CM7 very well, maybe I didn't pay attention but didn't notice much different in performance. In benchmark, the write speed is about 5-7 MB/s.

The higher capactity 16GB card seems to have more problems, other than that every card will do.
 
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dexx0008

Senior Member
Apr 2, 2011
141
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Twin Ciites, MN
You should check into the random read/write performance of small files on these cards. sometimes the class 6 or 10 aren't all they are cracked up to be. Fast transfers of large file yes, but general performance can suck.

sandisk class 2 or 4 cards can have excellent perf. I have a class 10 that is outperformed by class 2/4 and 6 cards.

if you are having problems with crashing, etc. try a basic sandisk and see if perf. is better.

there is a thread about it but i can never find it.