66mhz or 33mhz?

Discussion in 'Macintosh Computers' started by blue&whiteman, Apr 17, 2004.

  1. blue&whiteman macrumors 65816


    Nov 30, 2003
    I went to my local mac dealer today and bought a sonnet ata 133 pci card.

    I would love some feedback on whether I should put in in a 33mhz slot (all 3 of my 33mhz slots are free so whatever goes there will not be sharing the single 33mhz bus that all 3 slots use) or swap out my video and put the ata card in the 66mhz slot?

    so the question in simpler terms is will I get better performance with 33mhz video 66mhz ata card or the other way around?

    I want to be sure I choose the right combo.
  2. Rincewind42 macrumors 6502a


    Mar 3, 2003
    Orlando, FL
    Well, most hard drives (even those that do support ATA-133) can't actually achieve that transfer rate without being in a RAID setup. So unless you are going to do that you definitely shouldn't bother to swap with your video card. Beyond that, the theoretical limit on PCI-33 is 133MB/s (32-bits by 33Mhz) so it is a least a match for the bandwidth on ATA-133. You might get better performance on PCI-66, but I doubt that it will be worth the reduction in quality of your video setup.
  3. blue&whiteman thread starter macrumors 65816


    Nov 30, 2003
    thanks for the info. my 33mhz slots are 64 bit, not 32.

    blue&whites have 1 66mhz 32 bit slot for graphics and 3 33mhz 64 bit slots.

    I will keep the video card where it is then. the quartz extreme pci hack I use would really choke up in a 33mhz slot I think. runs quite well in the 66mhz slot.

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