Re: How can i measure my usb 2.0 speed

[EMAIL PROTECTED] (tarl smith) wrote in message news:<[EMAIL PROTECTED]>...
> The chipset is probably capable of going at that speed but PCI slots
> (which i presume you are using) are only capable of so much speed.
> 
> Tarl

acctually the chipset is ussually what bogs down the speed, if you
have a lot of devices using it.

all pci devices go through the chipset, which is like a hub for the
pci slots and just like a hub if there are a lot of transfers then one
device cannot send and receive at optimal speed

then there is the latency or amount you wait for sending to memory, to
receive info from memory, error conrrections and more.

theoretically pci 64bit 33Mhz can go up to 264MB/s, 64bit 66Mhz go
MB/s but ussually you get about 65 to 70% performance only if you
dedicate the bus to just that device, which means no other pci card.

for 32bit slots then you are talking about half of that 132MB/s plus
latency,

try taking all the other pci cards from the system and disabling
onboard stuff and see if it makes a difference.

hope this help, --Lehi