Just a slight update to the rig. I've installed an OCZ Vertex 2 SSD, which has improved speed and performance ALOT.
Here's a benchmark comparison of the SSD compared to a 1TB Samsung drive. You'll notice it's the random 4K reads and writes that suffer the most on the HDD.
HDD:
SSD:
And here's the previous and current performance index marks. The hard drive is still the lowest score, but it's much closer to the performance level of the CPU/RAM/GFX.
Previous Performance Index:
Current Performance Index: