Will adding more memory to current system ruin my dual channel setup and Overclock settings

[TheRoots]

I'm looking add more memory to my system because I'm moving from windows xp 32bit to vista 64bit. My question is If I fill up my last 2 slots with a another pair (2x1gb) will it stop it from running in dual channel and will i experience problems with my current overclock.

The ram I'm looking at

http://www.newegg.com/Product/...x?Item=N82E16820231087

http://www.newegg.com/Product/...x?Item=N82E16820231171



Current System

Gigabyte GA-965P-DS3
http://www.newegg.com/Product/...x?Item=N82E16813128012

Intel Core2Duo E6400 Conroe 2.13Ghz @ 3.2ghz
http://www.newegg.com/Product/...x?Item=N82E16819115004

G.Skill 2GB(2x1gb) DDR2 800(PC2 6400)
http://www.newegg.com/Product/...x?Item=N82E16820231065

EVGA Nvidia Geforce 8800 GT 512mb

 

[Denithor]

It won't interfere with dual channel, it may or may not mess up your OC (depends how nice the motherboard plays with the RAM).

Better option would probably be grab a pair of 2GB sticks & sell those 1GB sticks.

EDIT: Like these - G.Skill 2x2GB DDR2-800 for $45 shipped.

 

[imported_Scoop]

It didn't screw with my OC setup, though I had to (like most of) bump up the MCH voltage a notch or two. Four modules also give you slightly worse performance than two.. which you can find out with Everest