Hello:

I built a AMD Phenom 9950 black AM2+ 140W unit. I have (2X2GB) DDR2 800 
ram sticks.

Do I need Vista 64 bit to use 4GB ram? Will XP work? I saw people 
talking about only using 3GB.  I have not used Vista much. What is the 
best choice of Vista to go with? I am building it for someone else, they 
are lean to Vista. Has Vista SP1 solved the issues.

Thanks
Richard F. Bolha

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