<< a 400 watt power supply and some thermal paste on ur cpu? or what else for a stable k7s5a setup? by the way, anyone have a k7s5a system working for well over a year and has left their system on without shutdown for 5+ days straight? >>
I'm using a very generic 300 W PSU (AMD-approved, but for 800 MHz Athlon); the case + PSU cost about $46 at a local dealer, two years ago. I just used the Retail Box fan&heatsink, with the supplied phase-change strip -- no thermal paste. The system has an XP 1600+ and 1 GB el cheapo PC2100. I'm running under win98se with all updates.
It has been in use four months so far; I've left the system on for a week solid, FSB oc to 142.7 MHz, while running extremely CPU- and memory-intesive calcs. No BSODs.