Buying ram for old PC

[meitou]

Specs:
Mother Board Asus P5KC
intel core 2 duo 6400 @ 2.13 Ghz
2.00 GB of ram
Windows 7 Ultimate
GTX460 Evga
These are my current specs, I was wondering what ram I should get in order to increase the performance speed. I'm not getting a lot of frames, even in titles like vindictus and especially in gw2. I just want to play some games during my break from college.

 

[o1die]

If this is your board: http://www.asus.com/Motherboards/Intel_Socket_775/P5KC/, then you're in luck. You have one of those rare boards that have both ddr2 and ddr3 slots; try this ram: http://www.amazon.com/Crucial-Ballistix-DDR3-1333-240-Pin-BLS2CP2G3D1339DS1S00/dp/B006WAGHGS/ref=sr_1_8?ie=UTF8&qid=1355536846&sr=8-8&keywords=crucial+ballistix+4+gb+kit. Your two ddr3 slots will work with a 2x2 gb kit, and you can't mix your old ddr2 with ddr3; sell the old ddr2 (if that's what you have now) to pay for it. Your board won't run the ram at 1333, but it should run fine at 1066, which is what most core2 duo boards run at. When you upgrade to a newer board later, then the ram will run at 1333.

 

[meitou]

Alright, I'll look into that tonight. Would it boost my performance with gaming? I'm looking to play some Assassins creed 3 or black ops, if possible.

 

[o1die]

The extra ram will help, but don't expect too much.

 

[meitou]

Is it guaranteed compatibility? I tried to take 2 sticks of ram from my prebuilt desktop from HP which is the HP m7640n and it didn't work, wasn't compatible.

 

[o1die]

Hp is different. The oem boxes don't come with the same ram adjustments as your regular asus board. You have more options. Just be sure to use the right ram slots; you only have two ddr3 slots; the others are for ddr2; if you try to force ram into the wrong slot, it will damage it. download your board manual off the asus website if you don't have one. It will tell you which slots to use; yours are color coded, so it's easier. Just use a matched pair of ddr3, non-ecc 1.5v, and you should be fine. Crucial is a very widespread used brand.