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.
HDD performance on the Crosshair IV is what we have come to expect from the AMD 8xx series chipsets. It is also pretty much on par with what the Intel P55 chipsets are doing (if just a little slower).
Everest shows us the same thing we saw with Sandra; good speed, but just a little behind the Intel chipsets.