v-sync is disabled. if i max AA then fps drops to about 50avg. moniter refresh is 60hz. Using the latest 12.3 drivers.
Did you try enabling
vsync (with crossfire enabled)? That cured my micro-stutter with 4890 crossfire in BFBC2 back in the (not too distant) day.
Does stuttering persist with crossfire disabled?
thats interesting. did you have all the latest windows updates that were made for the fx series chips?
The FX series has a lesser IPC compared to Phenom II. This is mostly due to them using 1 FPU calculation per 2 cores. Their cores are setup as say... modules now. 2 interger calculations and one FPU per 2 cores. Thus performance in lower core count applications (such as games, since that's relevant) has met utter failure. Their 8 core (4 module) is a decent value if you can efficiently utilize the 8 cores/threads (which games do not), however the overclocking headroom doesn't quite match up to the IPC lost per core (compared to Phenom II). It's there with the right chip maybe, but most of us are quite disappointed.