Western Digital 640GB vs 750GB

I'm planning on building a gaming pc in the next few weeks. Currently I selected the Western Digital Caviar SE16 WD7500AAKS 750GB. I have read a couple of articles saying that the cheaper Western Digital Caviar SE16 WD6400AAKS 640GB is a faster performing drive. I haven't found any concrete facts besides the platters being denser for the 640. I don't know by how much faster is the 640 over the 750. Which hard drive should I choose? If the 640 isn't that much faster than the 750 then I could definitely use the extra space. The 750 also has a bunch of features I don't see in the 640.
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More about western digital 640gb 750gb
  1. Go with the 750. The difference is minimal.
  2. just get the 750 if you space crammed, the difference will likely be small and you'll be happier not having it full...
  3. wd caviar black 750
  4. well the 640gb is newer tech (2 platter) 320gigs per platter

    the 750g is old tech (3 platter) 250gigs per platter

    640 pros

    higher density = higher performance
    lower platter count = less noise/heat
    newer tech

    640 cons

    less room compared to 750 but the pros outweigh this, if you need more room get a 3 platter 1tb new tech 3 platter is 960gigs but wd says they can cram a lil more out of it making it 1tb
  5. The Caviar Black 1TB is a 3 disk - that should be the fastest.
  6. where did he list the caviar black 1tb disk? I only see him talk about the two others
  7. He didn't, I was mentioning it as another option.
  8. If you need to know about the performance of the Western Digital drive at 750GB then I would recommend this article from AnanTech: http://www.anandtech.com/storage/showdoc.aspx?i=3061&p=9

    Unfortunately the 640GB disk isn't included in the list but it gives some hint on the performance of the 750GB drive.
  9. Not sure about SE16 750Gb, but I owe Caviar Black 640Gb and SE16 500Gb

    Black 640 Is much faster the Se16 500.

    Here is my benchmarks:

    Black 640Gb

    SE 500Gb
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