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New 2GB Flash Voyager (NON GT) Speeds


Pons7

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Hi,

 

I purchased a 2GB model 3 days ago from a local reseller here in the Philippines. I don't know if the newer models are significantly slower than the older ones reviewed on the web. Did Corsair strip down the Vanilla FV to push the GT market up? I'm very concerned with the write speeds, especially for the bigger files.

 

Does this answer my question? http://www.houseofhelp.com/forums/showthread.php?t=58771

Did Corsair make non GT FVs slower after releasing FV GTs. Is this the case?

How will I know that I don't have an older model with a problem?

How do I find the part number for my FV?

 

I have read a amount of reviews for this product and was impressed with the performance. Im comparing the performance with this review by techPowerUP!. http://www.techpowerup.com/reviews/Corsair/FlashVoyager1GB/5

 

Here's mine

 

http://i55.photobucket.com/albums/g126/nyep/Fat32fromDOS.jpg

 

http://i55.photobucket.com/albums/g126/nyep/peakoffiletransfer.jpg

 

3 day old Corsair Flash Voyager 2GB (non-GT)

http://i55.photobucket.com/albums/g126/nyep/65kpersecond.jpg

 

3 Year OLD SD CARD (generic)

http://i55.photobucket.com/albums/g126/nyep/3yearsdcard.jpg

 

Using HDBench

 

Read:20317

Write:6808

Random Read:20382

Random Write:1165

 

I have gone through your basic troubleshooting and compared the drive's performance out of the box and after the command prompt format that you suggested. I also did the same troubleshooting using my home computer and my office computer. It seems to stay at the speeds I posted above.

 

Please shed some light to my issue. Let me know if need to get this drive replaced from my local reseller.

 

Thanks for your support,

Pons7

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Samsung, the world's biggest manufacturer of flash memory is specifying for their current 60nm MLC memory a max read speed of 17 MBytes/s and a max sequential write speed of 4.4 MBytes/s per chip. In a dual channel application (like Voyager) you could double those values (34/8.8), on the other hand the flash to USB protocol conversion might degrade performance a bit due to some overhead. So the real world 20 MBytes/s read and 5 MBytes/s write speed that you measured seems reasonable.

About your comparision of Voyager stick with old SD card, writing many small files: When writing small chunks of data to flash memory at random locations, every time the minimum of a whole block must be erased and rewritten internally. With old flash chips the block size used to be 16 kBytes, while with current big flash chips the block size is 256 kBytes (2x128 kB). So for storing small individual files the GB sized flash memory behaves very inefficiently. I would propose to use a packer program (ZIP, TAR, RAR, ..) to collect small files into a large archive before writing them to a flash stick.

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Why am I getting this result

http://i55.photobucket.com/albums/g126/nyep/Fat32fromDOS.jpg

 

compared to this? (Image from http://www.techpowerup.com/reviews/Corsair/FlashVoyager1GB/5)

http://www.techpowerup.com/reviews/Corsair/FlashVoyager1GB/images/atto.gif

 

Can you explain how did techpowerup get these numbers when they're using an older version? Does newer non GT rated only with 5mb Write speed?

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  • Corsair Employees
The newer FV non GT is a bit slower because we had to change to allow for higher density. The FV GT will preform much faster but the largest size of the GT version is 8 Gig where as the FV drives are up to 16 Gig.
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