3930K on its own running Linux will net around 100K PPD of course you can't run that and the gpus in Linux so thats your limit for a single cpu Intel, but certainly nothing to be sniffed at.
You *could* get it working in windows with VirtualBox and a Linux image and run the windows gpu client, you do, however lose a bit on the CPU, say around 40K if you take into account Virtualbox overheads plus losing a core to give the GPU's (if you are running 4 of them) but with that you could probably net around 120-130K PPD on the right work units with the right cards. Maybe even up to 150K with GTX570's
Or just stick to the V7 client in windows for CPU's and GPU's, probably back down to around 100K PPD.
One thing to bear in mind is heat, its going to get hot with an Overclocked CPU and 4 GPU's in there. On air you might have trouble with the GPU's overheating. On water there is still danger of overheating unless you have excellent ambient temps due to being underground or having aircon.
Plus you have the power issue. A high end intel cpu and 4 GPU's is going to pull close to 6-700W constantly from the plug. That does work out expensive over the year, so make sure you take that into account.