carpwoman wrote:Is there really that much difference between 5400 and 7200 rpm?
7200 rpm spins 33% faster than 5400 rpm. Faster spin = faster drive.
However, the 250 GB drives have platters that are 25% denser than 200 GB drives. Denser platter = faster drive.
In practical terms:
this thread has benchmarks of both a 200 GB 7200 rpm drive (Hitachi 7K200, generally acclaimed as the fastest 7200 rpm drive), and a 250 GB 5400 rpm drive (Samsung HM250JI). Going off max transfer, burst rate, and access time, the Hitachi is 15%-17% faster.
Going off the average, the Hitachi is 45% faster, however, the benchmark for the Samsung looks odd, it should not drop near the start like that. I found
another benchmark of the Samsung, in which the max transfer and burst are within 5% of the Hitachi and the average is within 10%. This is on a different system, so it isn't directly comparable, but it's pretty safe to say that the 7K200 is not significantly faster in absolute terms than the HM250JI.
A lot can depend on the brand of the drive in that different brands will have different firmware which can have a significant effect on the speed. You haven't said what brand your drive is.
Another issue is that the hard drive is often the bottleneck in systems, and this may exaggerate the perceived speed difference between drives. Your system would likely seem faster after upgrading the hard drive by 10% compared to upgrading the CPU by 10%.
Unless you know that your 250 GB drive is holding you back significantly, I don't think moving to a 7200 rpm hard drive is worth it at this point. Maybe when 320 GB 7200 rpm drives are released
