Besides the generally poor performance of low priced flash drives there are other things that affect performance. I have a 1 GB drive that has slightly better write speed with big files when caching is turned on, but when backing up a large number of smaller files the speed drops to about 100 KB/sec. With write cache turned off it is a more acceptable 1.5 MB/sec; still only about 1/3 the speed writing a large file with write cache on.
Ray K wrote:
>
> Paul wrote:
> > Ray K wrote:
> >
> >> I have two flash drives: a PNY Attache 512MB and a RiData 128 MB, both
> >> claiming to be USB 2.0. To copy 7 mp3 files, 25.5 MB, from my hard
> >> drive to the PNY drive takes 67 seconds; to the RiData takes only five
> >> seconds. For both tests, the drives were plugged into the same USB
> >> socket on the front of my computer. Neither had any other files on
> >> them before I timed the transfers.
> >>
> >> Any ideas why the PNY drive is so slooow?
> >>
> >> Thanks,
> >>
> >> Ray
> >
> >
> > Flash drives vary in performance. It could be different generations
> > of flash memory, that makes such a difference possible.
> >
> > http://www.tomshardware.com/2005/08/...ves/page9.html
> >
> >
> > Paul
> >
> Paul,
>
> Thanks for that real eye-opener. Unbelievable the differences. I had no
> idea there could be such differences in electronic memories.
>
> Ray
--
Mike Walsh
West Palm Beach, Florida, U.S.A.
Very slow PNY Attache USB 2.0 flash drive 
Linear Mode
