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Windows Forum / Windows XP / Hardware / July 2007Do USB Drives Come in Different Speeds?
Do USB flash drives come in different speeds? Thanks. I believe they are all USB 2.0, and compatible with USB 1.1. If, by the remote chance you are talking about speeds as in a harddrive, no they don't come in different speeds, as there are no moving parts within.  SignatureHTH, Curt Windows Support Center www.aumha.org Practically Nerded,... http://dundats.mvps.org/Index.htm | Do USB flash drives come in different speeds? | | Thanks. > If, by the remote chance you are talking about speeds as in a harddrive, > no > they don't come in different speeds, as there are no moving parts within. Well, flash memory does come in different speeds, thus flash drives should also come in different speeds. Yet maybe the speed difference between different flash drives is negligible, and makes no practical difference. I do not know. Let's see if we get information from others on this. They do however use different memory, with different read/write speeds, so the actual answer to his question would be yes. Signature---- Crosspost, do not multipost http://www.blakjak.demon.co.uk/mul_crss.htm How to ask a question http://support.microsoft.com/kb/555375 How to Post http://www.dts-l.org/goodpost.htm _________________________________________________________________________________ >I believe they are all USB 2.0, and compatible with USB 1.1. > [quoted text clipped - 5 lines] > | > | Thanks. Agreed. I guess I was thinking from a practical standpoint, but you're right--even if the difference is in nanoseconds. SignatureHTH, Curt Windows Support Center www.aumha.org Practically Nerded,... http://dundats.mvps.org/Index.htm | They do however use different memory, with different read/write speeds, so | the actual answer to his question would be yes. _________________________________________________________________________________ | >I believe they are all USB 2.0, and compatible with USB 1.1. | > [quoted text clipped - 5 lines] | > | | > | Thanks. For video work, the faster the better. There is a difference. Slower flash memory can cause jerky video. 150x is good. > Agreed. I guess I was thinking from a practical standpoint, but you're > right--even if the difference is in nanoseconds. Of course they do, but most vendors don't publish the actual R/W specs. Vista for instance will test and reject the slow ones for use as "ReadyBoost". > Do USB flash drives come in different speeds? > > Thanks. > Do USB flash drives come in different speeds? > > Thanks. I expect if you search long enough, you can find crappy ones that only manage about 1MB/sec, and more expensive ones with SLC flash memory, with speeds closer to 20MB/sec. The trick is getting the manufacturer to tell you how fast they are. Not all manufacturers give out that information. http://www.newegg.com/Product/Product.aspx?Item=N82E16820151033 "Read Speed: 8 MB/sec Write Speed: 7 MB/sec" http://www.newegg.com/Product/Product.aspx?Item=N82E16820134419 "Write up to 10MBps Read up to 24MBps" http://www.newegg.com/Product/Product.aspx?Item=N82E16820233052 "Read speed: 34MB/s Write speed: 21MB/s" Note that the speeds quoted above, are under ideal conditions. If you transfer many tiny files, you will not get those figures. Transferring small fines is very slow. The way to get a figure like that, is to transfer a 1GB file and time how long it takes. Then you'll get close to the MB/sec figure. If you have many tiny files, it may be better to ZIP them up first, before transferring them. HTH, Paul |
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