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Difference of IDE and SATA is seen physically by the cabling. The SATA cables are much smaller by width and can let the cable extend by approx 39 inches while IDE cables can extend only upto approx 18 inches. There is a speed difference which can be handled in SATA versus IDE which is 150MBytes/sec versus 133MBytes/sec but if seen from a hard drive cabling view, the speed difference does not matter since the hard drive can only give out data only at the rate of maximum 60 MB/s for a 10,000 rpm drive. PCSI...Would like to know that myself as to what it is. :)

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Q: What is difference between IDE SATA and PCSI?
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