A customer complained of a slow DELL Dimension 8400 which intermittently crashed. Performing the usual diagnostics, I determined that the WD 250Gb SATA hard disk drive appeared to be the problem, so I quickly cloned it to a modern Seagate 7200.12 SATA II 320Gb model.What a difference in the overall system performance! The original disk drive benchmarked at 45Mb/s bandwidth with a 16ms access time whilst the new one gave over 100Mb/s and 6ms respectively. Admittedly the old one was failing and giving the occasional error but I was amazed at the overall performance improvement for just £35 cost. It just shows how much hard disk design, capacity and speed has improved in the last few years.
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