Yep I agree that the Ravens are a beast (check out my sig).
v7 client isn't bad but if you'd like to try and maximize your PPD and efficiency then I would recommend some changes. This post of mine
is just about exactly what I would recommend for you, except I wrote that one for a guy with a 2500k so for you the only change would be when I tell him to change the number of cores from 8 to 4 in the VM, you would just not make that change and leave it at 8 cores. These two changes of a VM for the CPU and the advmethods WUs for the GPU will make a huge difference in your PPD, the switch is fairly easy (especially with the instructions I wrote there) and I'd be more than willing to help you if you need it.