Southbridge too hot - even when off

[RaferX]

First post here...

I just built a system around a Shuttle AN35 Ultra. Problem: Southbridge chip runs very hot (too hot to touch), *even when the PC is off*. I'm worried that when the PC is off, and the fans are off too, it will overheat. Had one motherboard go bad, I think this might be why. Replacement mobo seems to have same issue. Hasn't failed yet, but SB chip runs incredibly hot.

I've looked, but can't find a Southbridge heatsink for sale. I don't have the tools to make my own. Has anybody used Northbridge heatsinks, or video card heatsinks, on a Southbridge on an AN35?

Are there power management settings I can change?

Would reducing memory bandwidth make any difference?

The low-tech solution of turning off powerstrip for the PC when not in use is not an option -- this will be my mother's PC, she'll forget.

Thanks!
-Raferx

 

[DAPUNISHER]

It shouldn't be hot when the board just has 5v standby power, something is whacked me thinks.

As to chipset cooling, I have used this on nF2 boards and it is a great little kit.

 

[RaferX]

Thx. Could it be the power supply?

 

[DAPUNISHER]

I have no idea, hopefully one of our resident IEEE types will though 🙂

 

[RaferX]

Ok thanks again. Will try a heatsink for now. If anybody else knows what's up, I'd sure appreciate it.