I have a Sandisk Cruzer Mini 256 MB. It is a USB2 device connected to a USB2 port on my PC. My PC runs XP SP1 with the latest USB drivers and MS patches. What is the expected transfer speed of such a device? I am finding that copying files from PC to thumbdrive is slow (around 1400KB per sec). Transfering from thumbdrive up to the PC is much faster (can be 15MB per sec). Is that expected?? Any ideas what is causing this? Thanks!
Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations bkrike on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!
USB2 Thumbdrive Speed?
- Thread starter richgill
- Start date
Yes, that's expected. Don't let the USB2 label fool you into thinking that you're going to get extremely fast speeds. USB2 versions are actually only about 3-4 times faster in most cases over USB1. The fastest flash memory gadgets out there average around 4-5MB/s. Read times will always be much faster than write times. I'd say you're getting the right speed from that device.
~cdogg
[tab]"All paid jobs absorb and degrade the mind"
[tab][tab]- Aristotle
![[stpatrick2]](/data/assets/smilies/stpatrick2.gif "[stpatrick2] [stpatrick2]")
[navy]For general rules and guidelines to get better answers, click here:[/navy] faq219-2884
~cdogg
[tab]"All paid jobs absorb and degrade the mind"
[tab][tab]- Aristotle
[navy]For general rules and guidelines to get better answers, click here:[/navy] faq219-2884
rclarke250
Technical User
I have the same one and that is what I'm getting.
I shall use google before asking stupid questions!
I shall use google before asking stupid questions!
We are back to this "band width question" again.
Wether it's talking about 8x AGP, USB2 or the new PCI Express bus, the actual data transfer rate of any given device ie: graphics card, flash pen etc is not the same as how much data the bus can handle.
The device whatever it is, often only uses a small proportion of the buses actual potential.
Going off subject slightly here but we are all just about to have the new PCI express thrust upon us, in the next few months we will be flooded with advertising telling us to change over to the new platform, the advertisers will quote these fantastic "bus speeds" but the reviewers will tell us of little performance change initially.
Fact is current hard drives are only just hitting the very old ATA100 standards
Even the fastest graphics cards are not exceeding the band width of the old 4X AGP sockets
And very few addon cards are testing the current PCI bus.
OK, these new standards are for the future and will undoughtedly speed things up eventually when other technolgies catch up but don't fall into the advertising trap and think that overnight your current hardware is defunkt, they want you to join in and get on the advertising band wagon, after all that's what planned obsolesence is all about.
Martin
Replying helps further our knowledge, without comment leaves us wondering.
Wether it's talking about 8x AGP, USB2 or the new PCI Express bus, the actual data transfer rate of any given device ie: graphics card, flash pen etc is not the same as how much data the bus can handle.
The device whatever it is, often only uses a small proportion of the buses actual potential.
Going off subject slightly here but we are all just about to have the new PCI express thrust upon us, in the next few months we will be flooded with advertising telling us to change over to the new platform, the advertisers will quote these fantastic "bus speeds" but the reviewers will tell us of little performance change initially.
Fact is current hard drives are only just hitting the very old ATA100 standards
Even the fastest graphics cards are not exceeding the band width of the old 4X AGP sockets
And very few addon cards are testing the current PCI bus.
OK, these new standards are for the future and will undoughtedly speed things up eventually when other technolgies catch up but don't fall into the advertising trap and think that overnight your current hardware is defunkt, they want you to join in and get on the advertising band wagon, after all that's what planned obsolesence is all about.
Martin
Replying helps further our knowledge, without comment leaves us wondering.
- Thread starter
- #5
Thanks for all your comments. Thumbdrive manufacturers do seem to highlight the maximum bus speed on their packaging & advertising rather than real world data transfer rates. At least my Sandisk isn't faulty after all!!
Anyone know if one thumbdrive manufacturer is faster than another - or are they all much the same? I'm sure the underlying technology is very simlar if not identical.
Anyone know if one thumbdrive manufacturer is faster than another - or are they all much the same? I'm sure the underlying technology is very simlar if not identical.
As with flash memory in general, there are faster types.
Normally sold as 16X, 20X, 40X denoting their extra read/write speed compared to the normal (whatever that is?)
I think this applies to pens as well.
Martin
Replying helps further our knowledge, without comment leaves us wondering.
Normally sold as 16X, 20X, 40X denoting their extra read/write speed compared to the normal (whatever that is?)
I think this applies to pens as well.
Martin
Replying helps further our knowledge, without comment leaves us wondering.
- Status
Similar threads
- Locked
- Question
- Locked
- Question
- Locked
- Question