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Write speed specifications for Corsair 60x 1GB SD?

Need More RWHP

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So,the 60x speed refers to 9,000kB/s or 8.8MB/s. Using a software that over-writes with all 0s, I got 3.92MB/s. So, 3.92MB/s * 1024kB/MB / 150kB/s/x = 26.75x write speed.


What is the write speed supposed to be per the book spec?



My 133x achieved a write speed of 5.43MB/s, so 37.1x write speed.

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I am sorry we do not publish the write speed for the 60X SD Cards.

But what you have reported is about normal!


So does 60x only imply the ideal condition read speed? Out of curiosity, I repeated the test all over, twice per media under test and averaged out the result and I found the write speed to vary substantially between different ~60x rated 1GB SD cards. Formatter software used to over-write all zeroes over the entire useful space, then the reported capacity in MB was divided by time needed to complete the process.


Why doesn't Corsair publish the write speed? It is what matters when it comes to motion picture and continuous burst shots in a camera.


Corsair CMFSD60-1GB (60x)

3.81MB/s (100% - reference)


ATP 60x 1GB

5.15MB/s (135%)


Sandisk Ultra II SDSDH-1024-901 (66x read/60x write per spec)

5.22MB/s (137%)



Well interesting. I know frys.com obtains information from manufacturers and they happen to have just that data for 256MB CMFSD-256.

http://shop4.outpost.com/product/4596357 Rated at 60x R, 40x W.


Their data for 133x is consistent with what you have published on your website.




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  • Corsair Employees

I am sorry I dont have that information at this time.

But we can try replacing your flash card if you like and see if that will improve the performance!

Please use the RMA request found in TSXpress or follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! And please note that you are from the forum!

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