Also if you are using DDR2 you can upgrade from PC 4200-533MHz RAM to PC5400-667MHz RAM or better yet PC 6400-800MHz RAM and if your system can stand the over clocking PC 8000-1000MHz RAM and PC 8500-1066MHz RAM. Mine would only go to PC 6400, but let me tell you that was a intensely marked improvement over the PC 4200 RAM that came with it. I can now handle scenes that are in the upper hundreds of billions of polygons and before if was a stretch for 70 or 80 billion polys. Just make sure you pick it with the correct case latency. They are all 240 pin and work in the same slots.

I would rather be Politically Incorrect,
Then have Politically Correct-Incorrectness!!!