Will the amd fx-6100 bottleneck dual amd radeon hd 7850's?
Motherboard: ASrock 970 extreme3
cpu: amd fx-6100
GPU: to be determined
PSU: GS700 700-watte
Get a 970 extreme 4 and your SLI will be x8/x8. When I ran SLI with this chip I had it clocked at 4.3ghz and ha no bottleneck when gaming at 1920x1080. Did suffer some bottleneck when I went up to 5760x1080. x2 560's
stick with a single video card, especially if you have a slower cpu like the 6100. Dual cards will give you more microstuttering (even more so than usual) if you dont have a serious cpu to keep up the fps in cpu bound titles. Get a better single card, and upgrade to a piledriver cpu, that will see a good overall improvement in gaming. Crossfire gives you a high average framerate, but it does not provide a smopoth gaming experience, unless you feel like stuffing around with radeon pro. I have been there and tried that, and now im selling my crossfire 6850's.