Im trying to isolate a problem with my PC. I have an Asus K8N4-E, A64 3400+, 2gb RAM, X1800XT as far as important specs goes. I've been able to run memtest without any errors, prime without any errors, as well as run the ATI tool artifact tester w/o any issues. BUT, as soon as I run 3dMark05, particularly the nature test and the 2 CPU tests, my computer will freeze. I can run any of the feature tests just fine. It will also freeze at random intervals in Battlefield 2. I just swapped my antec neo 480w for an Enermax Liberty 500w since I thought that would be the problem. It still does it. Since the individual components, CPU, RAM and Video card seems to pass their individual tests just fine, it leaves only the motherboard as the culprit. I'd like to hear your guys' opinions on this issue before I RMA this board and/or spend more $ on a new S939 board + cpu.