Here are CPU-Z screenshots of my system: I currently have two sticks of 512mb, using dual channel. As you can see, the stats aren't stellar, and it is quite old (made in 2002). Everything looks decent, and I have great FPS in games, but the major problem for me is the stuttering. Using and fps monitor, I can see my FPS is always very high (80+ in Dod:source), but games "hickup" every few seconds, when turning corners, looking around, etc. Its especially bad right after a new map loads, but it seems to get somewhat better after a few minutes. It is still very annoying. This is a universal problem, from HL2:Single Player, DoD:Source, BF2, and F.E.A.R. My gut tells me its the ram. It is pretty much the only thing I did not upgrade from my old system, besides my sound card/hard drives/optical drives(they are fairly decent). I noticed that turning down texture quality helps the most, but I didn't buy a 7800gt and an AMD 4000+ to play games on "medium" video settings. Would I benefit much, if at all, from upgrading to this RAM?: http://www.newegg.com/Product/Product.asp?Item=N82E16820227210 Specifications: Model Brand OCZ Model OCZ4002048ELDCPE-K Type 184-Pin DDR SDRAM Tech Spec Capacity 2GB (2 x 1GB) Speed DDR 400 (PC 3200) Cas Latency 2 Timing 2-3-2-5 Voltage 2.6V ECC No Registered/Unbuffered Unbuffered Heat Spreader Yes also...whats the difference between pc3200 and pc4000? is pc4000 better? it seems like anything > pc3200 has higher "timings" than pc3200. whats the deal?