From: mike@defiance.vut.edu.au (Michael Paull) Subject: DX Chips Organization: Victoria University of Technology Lines: 10 X-Newsreader: Tin 1.1 PL5 I have a 486 DX 33 motherboard in my pc that i'd like to speed up. I'd rather not replace the whole motherboard, instead i'd like to know if i can use a DX/2 66Mhz cpu. The BIOS is late model AMI, circa 1991, and the system crystal is approx 66.3Mhz. My question is, can i just replace the original 33MHz cpu with the new DX/2 cpu? If its possible, will there be a need for extra cooling devices such as heatsinks and / or muffin fans?? Mike