Hi everyone, just trying to get a little input and maybe get a better o/c out of my card System NF7-S Manta Ray D26 1gig hyperx pc3200 koolance pc2 case (I know I know, but it does a great job and it's much more quite than my air setup was) 1800+ (1.53) @ 2.2, 1.75v x850 pro agp with 16 pipes, got the card last week and after doing some initial bench's went at it. Mem is amazing, ran up to 611 stable/ati tray tool artifact free with no cooling, bumped it back down to 600 for a bit of safety and ran artifact scanner for 24hrs, no problems. The core on the other hand is not as cooperative, maxing out at 520 on the stock cooler, would hit 68-69c under load, it would go higher but lock up during artifact testing. Revised the fan speed schedule the load temps dropped to 60c and it was stable up to 525. Being that it's brand new I didn't want to pull the cooler off, but I gave up last night and put it into the water loop. This time I let the auto-overlock give it a shot and was all the way up to 550 when it locked. Tryed setting it a bit lower manually and no luck, ended all the way back down to 532 before it was completely stable. Temps are much better now, 33idle (1-2 lower) but load maxes at 45c (15 degrees lower) but it's not cooperating. Should I bother with a voltmod at this point? The core is not overclocking very well and I don't want to make those kinds of changes if they won't produce results. Thanks in advance for any help.