sandy bridge underclocking / undervolting

[Magic Carpet]

Anybody has had any experience undervolting 2x00k and the likes?

If so, how much did the load temps go down as well as power consumption? Any input I would appreciate.

Thanks!

 

[Puppies04]

I have tweaked and fiddled around with voltages to lover the VCore on various overclocks but I didn't try undervolting at stock. I didn't see anything higher than about 50C on IBT when running at factory settings so I never really tried. Can I ask why you are interested, are you trying to do a passivly cooled system or something else?

 

[RavenSEAL]

If you want to underclock/volt, why not just get a lower end SB chip?

 

[Magic Carpet]

Thanks for your interest!

I am looking into building a passively cooled box running off a brick. But I want as little compromises as possible... I could always swap to a proper PSU if there is a need, though. But the idea for now would be to run 2x00k undervolted at stock.

Low power sandy bridge is unreasonably expensive. Just because there is lower demand, I refuse to pay price premium [but I can]. And like I already mentioned, I'd like to retain ability to oc, just in case.

 

[Puppies04]

seriously intel make chips specifically designed for low power/heat systems the 2500t/2400s would make so much more sense for what you are trying to achieve but if money isnt an option take a look at the figures they run at stock and use that as a starting point on a 2500k by reducing the mutiplier and undervolting

 

[Blastman]

These guys undervolted their i7-2600K to 1.04v (from stock 1.20v) computerbase.de

The system load dropped by 21w (168 to 147) which is all on the CPU. Since the CPU load test increased the watt usage by 79 (from idle), a drop of 21w drops the CPU usage to 58w under load (from idle). Should drop the fan speed and temp under load considerably. It makes quite a bit of difference on my i3-530 when I undervolt it.