Subject: Re: [ehci] USB-2.0 transfer rate
To: Petar Bogdanovic <email@example.com>
From: Tamas Eichkern <firstname.lastname@example.org>
Date: 06/26/2005 08:40:24
On Sun, 26 Jun 2005 03:44:40 +0200, Petar Bogdanovic wrote
> Tamas Eichkern wrote:
> >>The results are ok, but they don't come close to the promised 480Mb/s
> >>resp. 60MB/s:
> > AFAIK these values are normal. Think about it, your memory stick
> and harddrive > is the bottleneck here.
> Definitely. I've tested my laptop-hd today and found out, that it
> reads/writes at the same speed.
> And that's not surprising at all, because they are both 2.5 inch
> IDE-drives with 5400rpm.
> > For example, my fastest harddrive is capable of ~ 25
> > MiB/s, while communicating using UDMA 133, which enables 133 MiB/s
> > transfer rate, theoretically.
> What do you mean with 'MiB'? MegaByte or MegaBit?
MiB means mebibyte. For more information read
> > I really want to see a harddrive capable of 480 MiB/s :)
> Take any modern IDE UDMA133-disc with 7200rpm. They read at least
> with ~480Mb/s aka 60MB/s.
Hmmm. I thought 480 MiB, not Mibits... My fault. Anyway, it's a fact my drives
are slow (even when UDMA turned on). :)