Upgrade time?

[Christo]

I am feeling like an upgrade, what is letting me down with this system? I am going to upgrade the graphics card but should the RAM or CPU need upgrading? What will make the biggest impact? (I am using Vista) Also I am a silent PC guy, would the latest CPU's run much cooler than the E6400?

E6400 CPU
2Gb DDR2 Corsair PC2-6400 RAM
7900GS
ASRock ConRoe945G-DVI

Thanks guys!

 

[Christo]

Thats excatly the one I am buying actually! So once I have that no need to any other upgrades? What would speed up vista a bit, the RAM or CPU? (Or is that just Vista!?)