I recently upgraded my PC to a Intel Pentium LGA775 E6600 and since I've already installed an Nvidia 9500 GT and 2 Gb of RAM, I'm wondering why I can't play Splinter Cell Conviction or CoD MW2 without the horrible, horrible lag. The wierd thing is, I also play NFS Carbon on my PC and I can max the graphics without a hitch. Sensible help, please.