LOTS OF GOOD ADVICE ABOVE, BUT SOME MISS-INFORMATION TOO. I have been running an Asus K8V-X-SE with AMD 3700 64 CPU (VIA chipset), with 1 Gig RAM, using Win 98SE ---NO PROBLEMS AT ALL FOR ALMOST A YEAR. AIW 2006 Graphis card (a mistake - not recommended with 98) Dont know where this 512 RAM limit for Win 98 came from - but it's not true. Also multi-boot MSDOS 6.2, Win 3.1, Win XP Professional 64 bit, Linux Fedora Core 6, and Centos (I'm running 4 hard drives - 2 IDE & 2 serial.) Strongly suggest you read all manufacturer's websites for driver support BEFORE YOU BUY ANYTHING - No Win 98 drivers: then DON'T BUY. Good Luck --bigjet