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This question may sound strange, but some CPU have instruction sets for virtualisation technologies, while some non-related software can use those sets, or even GPU to improve their performance.
So, anything like this for PostgreSQL, or is it something along the lines of "install 4x 8core of latest stuff and be happy"?

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closed as too localized by MDMarra, womble, Bart De Vos, growse, Ward Aug 24 '12 at 3:52

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I don't think this is worthy of an answer, but I suppose you could say that the database might benefit from running on the amd64 architecture depending on your data set and whether or not 64-bit allows PostgreSQL to work more efficiently. Also, Ignacio is right, the amount of memory installed and hard drive speed is going to matter a lot more than CPU. – gparent Apr 3 '12 at 3:51
up vote 5 down vote accepted

Databases don't actually use the CPU very much. I/O is far more important for database performance.

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