40- vs. 80-conductor IDE cable

Discussion in 'Windows Desktop Systems' started by Jestermask, Jul 11, 2002.

  1. Jestermask

    Jestermask WinTMBG Professional

    Colorado, USA
    What's the difference between these two? Will I have any kind of instability if I use the wrong one?


  2. Krux

    Krux Nissan Powered

    speed mostly, the drive will still run fine. Just can't move info as fast.
  3. RobbieSan

    RobbieSan Guest

    if you have an older mainboard that doesn't support ATA100 you should pick up a Promise ATA100 PCI controller.. the speed increase is worth it..
  4. Taurus

    Taurus hardware monkey

    Sacramento, CA
    40-conducter cables for for ata66 (i believe) drives and slower. for ata100 and ata133, you will need to use an 80-conductor cable for the corresponding drives. so basically, use 80-conductor for your harddrives and 40-conductor for optical drives.
  5. doughboy

    doughboy Guest

    40pin VS. 80pin

    The 40 conductor cables are essentially suitable for any drive that is DMA33 or less. You can use these cables on DMA66 or higher drives with certain limitations. Most newer motherboards will reduce the max transfer rate to DMA33 if these cables are detected. The 80 conductor cable was designed with 40 ground connections. This is to eliminate the extra bus noise that DMA66 and higher drives create. For people that use DMA133 drives and higher there is another cable that is more suited to this type. It is still an 80 conductor cable, the only difference is that it has an extra gound strap that you mount to the case as well.
    To make a long story short, you are better off using the 80 conductor cable on all of your devices. If you use a 40 conductor cable be sure not to use it on any device faster than a DMA33 device.