Hey guys, was just wanting to get some opinions here. I need to know if two 7900's in SLI will bottleneck my CPU, a 4000+ Sandy oc'ed too 2.6. Full system specs are at the bottom of the page. Im sure I have a little more wiggle room on the OC as I ONLY wanted to OC the CPU to 2.6, once i got it there, i stopped oc'ing. So, bottom line, do I get another 7900 (knowing ofcourse DX10 is coming out yadda yadda yadda) or upgrade the proc? Thanks for your advice! PS. How can one tell if your CPU is bottlenecking your system anyways!?