Western Digital Caviar Black which one?

I am looking at the Western Digital Caviar Black series because it has 2 processors and 32MB cache.

But I want to know which version i should get. I heard that the transfer rate is different between the different amounts of GB. So if anyone can tell me which gets the best transfer rate(mb/s).

My system.
i7 920 Oced to 3.8
OCZ 1600 6gb ram
EVGA x58 3-SLI
GTX 275 x 2
Corsair HX 1000
WD 320GB 7200RPM 8mb cache

500GB: http://www.newegg.com/Product/Product.aspx?Item=N82E16822136320

640GB: http://www.newegg.com/Product/Product.aspx?Item=N82E16822136319

750GB: http://www.newegg.com/Product/Product.aspx?Item=N82E16822136283

1000GB: http://www.newegg.com/Product/Product.aspx?Item=N82E16822136284
8 answers Last reply
More about western digital caviar black
  1. If I recall correctly, the 640GB version comes out on top because it only uses 2 platters vs the 750 and 1000 which use 3.
  2. The 500 and 750 use 250GB platters (2 and 3 of them respectively), and are slower.

    The 640 and 1000 use 333GB platters (2 and 3 of them respectively), and are faster.
  3. +1 to the 640Gb drive.
  4. 640 or 1000. The 1000 is faster (slightly) than the 640, but both beat the 500 and 750 by a pretty big margin.
  5. the 640 is supposed to be the fastest but the difference is insignificant get the one with the amount of storage you need
  6. +1 for 640GB/ 1TB...
  7. i love my 640GB Black series. Very fast. I too recommend it.
  8. 640GB (i have non-black editions and are very happy, they are AAKS or Blue's)
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