Ram Advice?

[Tim1981]

I have made a few upgrades since last posting in this thread.I upgraded my gpu to a 2 gig ATI 6950 and I also bought a solid stat drive for Clod to run off.

I still get the odd stutters and realise that its the optimisation of this game.Im looking at a ram upgrade.I have 4 gb in 2 gb sticks (1066) installed with 5:5:5:15 timing's and at 1.9 Vcore.

The ram I have been looking at specify's 2.2 vcore.Will I be ok running my current ram at that higher voltage?

Which slot should I put the extra stick in on my motherboard?

Any help, much appreciated.