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Western Digital 640GB vs 750GB

Last response: in Storage
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July 31, 2008 5:59:31 AM

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.
July 31, 2008 6:12:02 AM

Go with the 750. The difference is minimal.
July 31, 2008 6:31:15 AM

just get the 750 if you space crammed, the difference will likely be small and you'll be happier not having it full...
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July 31, 2008 7:07:03 AM

wd caviar black 750
August 6, 2008 8:02:52 PM

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
a b 4 Gaming
a b G Storage
August 7, 2008 5:10:42 AM

The Caviar Black 1TB is a 3 disk - that should be the fastest.
August 7, 2008 3:48:02 PM

where did he list the caviar black 1tb disk? I only see him talk about the two others
a b 4 Gaming
a b G Storage
August 7, 2008 4:46:12 PM

He didn't, I was mentioning it as another option.
August 7, 2008 7:48:36 PM

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.
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