Should I get 6GB 1600 RAM or 4GB for 64bit Windows 7

[gman24]

http://www.newegg.com/Product/Product.aspx?Item=N82E16820231225
or
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231277

This is for my new system build which will have an AMD 955 black 3.2ghz processor and some AM3 mb
I'm not sure whether having 6GB of RAM is worth the money, though this is meant to be a gaming pc.

 

[saint19]

Get the 4GB, the AMD processor don't support tri-channel yet.

I have 4B (2x2GB) with a 955 an win 7 x64 and it enough for now, or at least till AMD support tri-channel.