Pin mod to undervolt Pentium D 820 in Dell Dimension 5150C
Posted: Thu Mar 09, 2006 2:57 am
I picked up a Dell Dimension 5150C for �370 for a friend yesterday. 2GB of DDR533, 160GB Samsung Spinpoint, Pentium D 2.8GHz dual core all in a tiny BTX case. Absolute bargain for him, even though there's not enough room for tinkering for me.
Anyway, the processor is kicking out so much heat that I really want to bring the VCore down a bit. I just ran CPU-Z and it detected the VCore as 3v! Surely this can't be right? I was expecting 1.5V max so maybe it has something to do with the dual cores which is throwing CPU-Z of track. Or maybe the Dell just reports whatever it feels.
The sSpec is SL88T. Firstly, is there any way to find out what the VCore actually is? Secondly, can anyone figure out which pins need joining/breaking to bring the VCore down to something reasonable.
Here's the VID table (dead link removed) taken from page 16 of the data sheet. It's a nice easy mod on my Mobile Pentium 4M where you bend a pin at the edge to bring VCore down to 1.1v which allows me to run passive. I don't expect the same from this but it's giving out so much heat that I don't think it's operating at it's correct voltage in the first place.
Anyway, the processor is kicking out so much heat that I really want to bring the VCore down a bit. I just ran CPU-Z and it detected the VCore as 3v! Surely this can't be right? I was expecting 1.5V max so maybe it has something to do with the dual cores which is throwing CPU-Z of track. Or maybe the Dell just reports whatever it feels.
The sSpec is SL88T. Firstly, is there any way to find out what the VCore actually is? Secondly, can anyone figure out which pins need joining/breaking to bring the VCore down to something reasonable.
Here's the VID table (dead link removed) taken from page 16 of the data sheet. It's a nice easy mod on my Mobile Pentium 4M where you bend a pin at the edge to bring VCore down to 1.1v which allows me to run passive. I don't expect the same from this but it's giving out so much heat that I don't think it's operating at it's correct voltage in the first place.