I know we have a buss load of overclock results postings within the forums probably, but they are all scattered all over the place and tied in with other threads. I would like to have one thread very specific to the 4850's and your max stable overclock so that we can use it as a basis on what to expect on the cards. Please post Brand max stable clocks and how determined if its stock or volt moded (and hard mod or bios mod) Me personally I have 2 Visiontek 4850's in crossfirex so far my max stable seems to be 675/1000 with stock bios/voltage it has only been determined by playing games so far, I have had no issues or crashes with maxed out CoD4, Crysis, and other games. Temps are great, high 50's low 60's idle with a 50% fan speed locked via edited CCP profile and in the 70's load. Also wonder if anybody has tested what gives a larger benefit and can share, overclocking the core or the memory? In the past with my nvidia cards I always experienced a "push pull" relationship between the core and memory. If I maxed out the core to its highest stable point the memory would not overclock nearly as high as if I lowered the core down and raised the memory instead. So rather than finding the max for both, I had to find the best balance, in the case of my old 7800GTX I found that the memory held more importance than the core. Soon here I may flash my bios to 1.2v and re-do the fan speeds and see what I can get. Waiting on others to report back on temps and stability before I make my move.