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Benchmark Results: I/O Performance And Access Time

9.5 Versus 12.5 mm: Which Notebook HDD Is Right For You?
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All I/O performance tests reveal that the 640GB two-platter drive is faster. Since the difference is pretty large, it's obvious that high I/O performance wasn’t part of the 1TB model's performance requirements.

Access Time

Access time is longer on the three-platter drive, which corresponds to what we’ve seen in I/O testing.

At this point, we have to assume that the high-capacity drive was optimized for throughput, while the 640GB model received firmware more suitable for I/O intensive workloads.

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  • 0 Hide
    Ubrales , May 22, 2010 10:14 PM
    Good informative article, with a clear concise conclusion!
  • 1 Hide
    mikie tim t , May 24, 2010 8:57 PM
    I could see these being beneficial in SSD/App, HD/Data type setups where the SSD is the boot/app drive with the HD as the data drive.
  • 0 Hide
    danwat1234 , July 24, 2010 11:50 PM
    mikie tim tI could see these being beneficial in SSD/App, HD/Data type setups where the SSD is the boot/app drive with the HD as the data drive.


    Exactly. SSD for OS and apps, this drive (or a 1.5TB 12.5mm drive when it comes out) for storage of large, defragmented files.

    Meh ... but by the time a 1.5TB 12.5mm drive comes out, a 1000GB 7200RPM 9.5mm drive will be around ... decisions decisions.