Dilemma - Need Advice - CPU VS RAM

I previously had Windows XP professional on my PC and everything wa
running very smoothly. It also detected that I had 2 different dual cor
CPUS (2 Dual Core Xeons).... However it only detected 3.25 GB out of m
4 GB of RAM. I recently installed Vista Home Premium 64 Bit to tak
advantage of the whole 4 GB of RAM but later learned that it onl
supports a single CPU. Here is my question, do you suggest I go back t
XP and have use of both processors but only have access to 3.25 GB o
RAM, or stay with Vista Premium using 4 GB of RAM but only using 1 dua
core CPU? I'm stumped.... 2 other options would be to get Windows X
Professonial X64 or Vista Ultimate 64 Bit (which supports multipl
CPU's)... please help :eek

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amboyangle
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