CPU/GPU/Motherboard/RAM
My desktop had a hardware problem with the motherboard. I decided to upgrade several components and am currently writing on a smooth new desktop system. I also upgraded the GPU because this has been the bottleneck of my system.
The new components are:
Board: ASUS P7P55D P55
CPU: Intel Core i5 750 4×2.66GHz
GPU: NVidia Palit (R) GTX260 Sonic Core216 55nm HDM
RAM: 4096MB Corsair XMS3 PC3-1600 CL8
Now the harddrive is the bottleneck.