msi p67a idle voltages

ryu · 18 Jan 2011 at 17:23

hi, i have the msi p67a-c45, most people on here seem to have the gd55 or gd65 but for the most part id assume they are the same.

ive seen screenshots of people with really low volts at idle, like 1 or below (unless im dreaming). i was just wondering what option achieves this, with vcore on auto, it will be ~1.2v idle and same with higher clock speed.

i dont want to heavily overclock until i have a decent cooler, still using the crappy stock one at the moment, so all ive done is set vcore at 1.25 and a 40x multi, but this means vcore is always 1.25.

im aiming to achieve a more energy efficient setup opposed to a high overclock. so id like the lowest volts possible at idle, and lowish volts with ~4-4.5ghz overclock.

one thing to note im still on v1.2 bios which it shipped with and was not sure if this has anything to do with it. i want to update the bios but i dont have usb stick at the moment!

Jon20 · 18 Jan 2011 at 21:16

I'm going to assume the BIOS is similar to that of the GD65. If so, in the green power section, change from APS mode to Intel SVID mode. This lowers the idle voltage when the vcore is on auto. Not sure if it still works if you manually set the voltage.

ryu · 18 Jan 2011 at 22:28

from what ive read and screenshots, the bios is identical apart from the added options being added from the bios updates.

the c45 is less common than the enthusiast gd55/65 and thus appears to receive less frequent bios updates and there's less activity in the forums (which i didnt take into consideration when opting for the cheaper board

). although i have read somebody tried flashing the c45 with one of the gd55 bios's and it worked fine.

ill try out what you said, thanks

Devrij · 18 Jan 2011 at 23:31

Let me know how you get on, I went for the C45 as well and it arrives tomorrow morning.

ryu · 19 Jan 2011 at 00:32

Jon20 said:
I'm going to assume the BIOS is similar to that of the GD65. If so, in the green power section, change from APS mode to Intel SVID mode. This lowers the idle voltage when the vcore is on auto. Not sure if it still works if you manually set the voltage.

yup that certainly does the trick. with vcore on auto it drops really low, but if you set a vcore then that will be the lowest it rests at.

although having done this i had stability issues and windows continued to crash, until i input the ram timings manually, which for now seems to have made it stable again. ive tried running the memory vdimm at below 1.6v previously (with ocuk guys saying the xms3 should run fine at 1.5v) and it has made the computer reset or crash. i think i need to update the bios because the later bios's state it has improved ram compatibilty and overclocking (although ive not tried lowering the vdimm now the timings are manually inputted).

ill see how stable this configuration is for a while. the vcore at idle is now 0.96v and ive put the multiplier back to default 33 for the time being and the vcore increases to 1.168v, which is lower than the 1.2v previously.

it would be good if you could set an exact idle vcore and an overclocked vcore.

thanks Jon20

shrek2 · 16 May 2011 at 10:29

Has anyone figured out a way yet to lower v core when the cpu downclocks to 1600mhz when the vcore is set to what you want? My previous Asus p8p76 did this.