I am a newbie and recently unlocked my Athlon tbird 1133. It wont even let me post at 10 (default is 8.5). Without unlocking it, my highest FSB that was stable was 144 for a speed of 1224. Now at 9.5 the highest fsb I can achieve stable, is 133 for a speed of 1263. My system is as follows: Shuttle ak31 v3.1 mobo, 256mb micron ram, powercolor geforce 2 mx400 video in the agp, a motorola modem in the pci, with swiftech mcxc370 hs/fan. I raised the cpu voltage to 1.8 with no differences. Before unlocking the cpu, I had tried to raise it above 1.8 and it wouldn't post. I have a cheap 300w powersupply. Could this be a power issue? Should I go to a 400w antec power supply?