My DFI NF4 Ultra-D was damaged due to wrong bios flashing. While waiting for claim I purchased this Asus board and plan to see the performance difference. CPU : FX55 VGA: X1900XTX RAM: Corsair 4400C25PT (dual channel) BIOS: 0502 Setting: FSB 250, Multiplier 11, 2.5-3-3-7 First installation the system will never able to install WinXP without overclocking. Keep giving blue screen with all sorts of message, IRQ not equal, bla bla... even with other cards removed and using only 1 hardisk. Flashed the bios from 0404 to 0502 then only WinXP got installed smoothly. With exact same CPU and RAM setting, this RD580 board perform rather poorly in all 3D games, 3dmark etc, at least 10% slower than the NF4U board. I have tried one whole week but cant find the problem. Clean installation of WinXP without other cards, bla bla... Another problem that i cant solve also is the time setting. It will become slower and slower over time, with or without auto time synchronize. About 20min slow per day. Very irritating and not knowing what to do about that. Everyday have to reset the time is a nuisance. Thanks for any help on this.