OK, here is the problem I am having. I ran
this board fine for like 6 months with a
1.3ghz cpu. Ran like a dream.. no problems
what so ever. I upgraded to a 1.7ghz and it
started running hot.. even after going back
to the 1.3ghz chip. Tried checking the bios
setting but everything there seems to be in
order. My power supply is 300 watts. I'm
wondering if this could be the problem as i
am also running 2 hard drives, 2 dvd
drives, and a total of 5 case fans as well
as my AGP video card and network cards.
Also it's worth noting this system runs the
rambus memory chips... 4 of them. Not
entirely sure if it's the power supply or
if i should try a new cpu fan and heatsink
first or try swapping the power supply...
any ideas? My motherboard is model MS-6339 made by MSI.

Check to see if your, fans are even in the intake and exhaust. also dust your dream machine off, and check the Cpu cooler to see if it has collected a few dust bunnies in that six months.

Good air in bad air out. just like breathing you dont wanna rebreath your own air to long.

E=MHZ

Personally, I don't know why you'd invest any money in a socket 423 board, but it's your money. Hopefully you got the CPU cheap.

When you make a statement like, "I upgraded to a 1.7ghz and it started running hot", it would be helpful if you provided the temperature readings.