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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > IDE cable differences?

IDE cable differences?
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Fresh-Faced Recruit
Join Date: Jan 2003
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May 12, 2003, 09:42 PM
 
I just picked up a PCI ATA66 controller card for real cheap for my Rev 1 B&W. (Rev 1 B&W's had iffy IDE controllers). It didn't come with any cables. I plugged it into a slot, and used the 2 channel ATA33 cable that was already there. Everything works fine and all my drives show up just like they did before.

The cable I'm using is a two channel IDE cable, and all the plugs are black. I've read that ATA66/100/133 cables are color coded blue-gray-black.

Even though everything works, am I missing out on speed becuse I might be using a slower ATA33 cable on an ATA66 bus?

Is there really a difference?
     
Dedicated MacNNer
Join Date: Dec 2002
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May 12, 2003, 10:45 PM
 
Yes.
http://www.seagate.com/support/kb/di...ra_ata_66.html
How does Ultra ATA/66 attain those faster transfer rates?

Ultra ATA/66 removes bottlenecks associated with data transfers, especially during sequential operations. Ultra ATA/66 requires a special 40-pin, 80-conductor cable that reduces noise bleed-over and improves signal integrity by providing 40 additional ground lines between each of the standard 40-pin ATA signal lines and ground lines.
     
cocamix  (op)
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May 13, 2003, 09:39 AM
 
Thanks!
     
Mac Elite
Join Date: Jun 2000
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May 14, 2003, 09:57 AM
 
wow...cool, never knew that before...just know that ATA controllers are backward compatible...PC133 IDE cables are cheap anyway
G4/450, T-bird 1.05GHz, iBook 500, iBook 233...4 different machines, 4 different OSes...(9, 2k, X.1, YDL2.2 respectively) PiA to maintain...
     
   
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