I have an intel core i7 D0 stepping @ 3.2 GHz w/ 1.18 v ( stock voltage )
My computer is idle for at least 1/2 the day, like when i'm at school or when i'm sleeping. So i'm just wondering.. how do you make your processor turn off cores when it's idle and undervolt itself when it's idle? Is this possible? Thanks
My idle temps w/ scythe mugen-2 are like 41/40/40/37
With the core i7 it has a feature called speed step that should be under clocking the cpu to some where around 800 MHz. If you download cpu-z, it will be able to show your current GHz/MHz in real time. If you dont see it dropping then you need to go into bios and enable it.
Why not just put it to sleep? That will shut down your power hungry video card as well.
In any event, make sure that CPU enhanced halt (C1E) and CPU speed step (EIST) are enabled in your bios setup. If efficiency is that important, then also go back to stock clock speed.
I remember the package said to run my ram at 1.65v and it's at 1.50 volts... isn't that low? lol
1.65V is the max you'd want to run. The lower you can run the better.
Also, I have my i7 920 undervolted with EIST and C1E enabled, so at idle it reaches a vcore of only 0.768V I lowered the vcore in the BIOS to just under 1V, but it will almost definitely be different for you.
It's only useful if there's no load on the cores. Running a temperature monitoring program polling each core every second or so means they can't stay in the C6 sleep state. I think it would be difficult to measure core temperatures in those deep sleep states.