What is more important for speed: Processor Speed or RAM?

Posted by Jake on Super User See other posts from Super User or by Jake
Published on 2010-05-22T19:07:54Z Indexed on 2010/05/22 19:11 UTC
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cpu

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ram

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speed

I am about to buy a desktop, I narrowed it down to two choices, both are virtually identical (even in terms of price) but one has 4 GB of RAM and a 3.7 GHZ CPU the other has 8GB of RAM and a 2.7 GHZ CPU

Which is the better choice for speed?

Also as a side question, what is better:

a 2GB stick of DDR2 RAM or a 4GB stick of DDR3?

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