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firewire...and SCSI

Discussion in 'Converters & Interfaces' started by natan666, Apr 3, 2001.

  1. natan666

    natan666 Guest

    well this was originally was a question dealing with a PCI-to-Firewire card, but i got to thinking. if i'm not mistaken, the PCI slot has a transfer rate of 133 or so Mb per second for each slot. i thought i saw a company that advertised firewire PCI card for PC's, advertised with a xfer rate of 400Mb/sec. how can this be? the PCI would bottleneck this to 133, correct? which leads me to PCI SCSI interfaces: would an ultra160 SCSI be capped off at 133 as well?
  2. Opus2000

    Opus2000 Distinguished Member

    Apr 7, 2001
    You are getting two thing mixed up here..Megahrtz vs Megabits...PCI bus has a certain reference speed..how many calculations per second..Firewire has a data stream..how much information per second..Fire wire can handle 400Megabits per second..roughly 50MB a second..PCI bus can handle that very well especially if you have a 133front side bus...133 Million calculations per second at 32bit..pretty snazy if you ask me!!! Even 100Mhz bus speed is good too!!
    Hope that clears things up for ya

    Opus :roll:
  3. natan666

    natan666 Guest

    thanks for the reply. i understand the difference between FSB and Mb/sec, the firewire specs threw me off with the Mega-BITS vs. Mega-BYTES. i'm going SCSI anyhow.

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