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Assuming price and RPM are equal, which is a better buy: 500GB w/ 32MB cache or 640GB w/ 16MB cache?

A) Western Digital Caviar Black WD5001AALS 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive - OEM

or

B) Western Digital Caviar SE16 WD6400AAKS 640GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive - OEM

Both are $69.99

Update:

I am planning to use this HDD to install the OS and Applications. I would probably use a larger drive for my multimedia.

2 Answers

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  • 1 decade ago
    Favorite Answer

    More cache = better random access.

    the cache is what stores the most used information (e.g program instructions) -- the bigger the cache, the more information it can store, and the less your hard drive has to work.

    Of course the Black would outperform the SE16.

  • 1 decade ago

    If you play games or edit video, the larger cache is better, as it will perform faster for certain operations.

    For nearly everything else, the larger storage is the better option, as the difference in cache will not noticeably affect performance.

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