I love both of mine too (c566 @850 in one and PIII 700 @ 700 in the other)!! Although I would love it even more if I could get my PIII 700E running at 133 MHz (Retail cCO). Can you guys tell me what settings you have in your bios to hit 133 MHz FSB??? My other machine: Enlight case, Abit BH6 Rev. 1.02 (ss), MSI Slotket, 256 MB Micron PC 133 7.5ns, Hercules GF2 MX, SB Live Value, ASUS 50x, Pioneer 10x, Hollywood Plus, USR 56k, Maxtor 6.4 GB & IBM 3.2 GB (both to be replaced with Maxtor 30 GB on the way). I don't think it's heat, because I can't even get it to boot into Win 98. Posts, but hangs on Starting Windows screen. Any info is appreciated.