I believe both USB 2.0 and Firewire costs CPU time in data transfer. 
 
Firwire 800 has a maximum throughput of 800mbps whereas USB 2.0 is 480mbps.  
 
I'm not sure the bottle neck will still be the harddrive since the external 
enclosure I have is a RAID 0 enclosure and it supports 1394a and 1394b 
standard. No USB 2.0. 
 
Thanks

Taky
  ----- Original Message ----- 
  From:   Kenny Stokes   
  To: [EMAIL PROTECTED]   
  Sent: Wednesday, January 12, 2005 8:26   AM
  Subject: RE: [AP] Firewire 800
  

If I understand it correctly, Firewire Activity requires   CPU time.

It is highly recommended to stick with the USB 2.0 standar   which does not
bog down your CPU.

Even though Firewire 800 seems   faster, when you drag your CPU down,

it may not benefit you at   all.



I don't think you won't see any noticeable difference   between a Firewire 800
and a USB 2.0 regardless the application,

due   to system hardware bandwidth limitations.

But, the Firewire will slow   down your CPU.

If anyone has a differing opinion, I would love to hear   it.



Sorry it's a little bit off topic...

I bought an   external Firewire 800 enclosure as a video drive. Now i'm
connecting it to   the onboard 1394a firewire port. Does anybody know if I buy
a 1394b   firewire card, will it benefits the maximum data   throughput?

Thanks

Taky




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