You forgot to mention which GPU you are using.
Sorry, Durn cut and paste go me again.
GPU VGA_WS ATI| 100-505610 2460 512M
The ATI FirePro 2460 4 port is for business graphics not for gaming.
And I have not tried the drop in SATA in the top of case yet.
The only two mods I want to make are:
1. Intel NIC
2. 500 GB Internal Drive to put Windows Paging file, browser cache, etc on.