I currently have Crossfired 2 x ATI XFX HD4850 GPU's in an Antec 1200 case, one card with 1GB GDDR3 and the other with 512MB GDDR3. If my GPU's are only running at like 48C would it be benifical to unlock ATI Overdrive to boost up the memory clock and GPU clock to get better performance? or should I just leave it at auto?
Antec 1200 case
1000W BFG 12V/2.2 PSU
Asus M4A79XTD EVO AM3 Mobo
Windows 7 Home Premium 64bit
AMD Phenom II X4 955 Black Edition CPU (overclocked to 4ghz) w/ Thermaltake SpinQ heatsink
8GB G. Skill DDR3 1600mhz memory
Crossfire 2 x ATI XFX HD4850 GDDR3 GPU's
WD 1TB 7200rpm Caviar Black Hard Drive
I need help. I unlocked ati overdrive and the default for both my GPUs were 625mhz core clock and 993mhz memory clock. Now whenever I change these settings they crash my computer either in the test custom clocks or when I load up a game, but the temps don't go up very high. Can someone tell me how to overclock my gpus properly?
I bought Both cards within a month of each other. I just realized after I bought the 512mb one on newegg.com that I actually got the 1GB card cheaper at best buy with my employee discount. I brought both cards up to 700mhz core clock and 1100 mem clock b4 they crashed, was those settings too high? And where is this autotune? And should I have enable overdrive checked?