Super low power CPU project

[Combat squirrel]

As title,

I have a an i5 quad sandy, anyway to underclock it to low low low power , I have a Z68 mainboard and H61, can it be done either?

Also any 3rd party windows apps that can FORCE underclock and FORCE low low low low power?

 

[JonSmith]

Crystal CPUID can force voltages and multipliers on a number of chips.

 

[eddyr]

Bios, set multi to 16/20 or whatever you want. As a starting guide (bios/board/brand voltage reading differences etc) 16x ought be doable ~0.85v or lower. My 2700k will hit 16x at 0.84v, 20x at 0.91v and 32x (3.2GHz) at 1v. My 2500k would require a little less. (16x 0.8v, 20x 0.82v, 32x 1v) You'l have to use fixed voltage as the VID will set a far higher than normally required voltage (to likely account for the worst of chips and years of accumulated degradation with a decent safety margin) and a negative offset will take you too low (at least it does on my board, other boards/bioses may differ) causing instability or hangups.