Disk Drive Controller
The system drive controller is an important part of system performance. In most modern boards your drive controller will run off of the PCI-e bus. The PCI-e bus performance can be affected by poor trace layout as well as many other design choices that show up on different boards.
For testing we use Sisoft's Sandra and Everest.
Now this is a little odd. Normally with good memory performance, but slow HyperPi scores we would expect poor HDD performance. However, that is not the case here. Sandra seems to indicate that the P8P67 WS should have done much better, at least based on HDD speed.
Stock HDD Performance
Overclocked HDD Performance
Stock USB 3.0 Performance
Overclocked USB 3.0 Performance
AIDA64 seems to back up our Sandra findings for HDD speed until we see the lower end Read speeds. That is pretty far off of the mark to be honest, and could possibly be one of the causes for the slower HyperPi scores.