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Undervolting an i7?

post #1 of 12
Thread Starter 
Im planning to undervolt an i7 960, so i'd like to ask those of you ladies and gentlemen who did so - how low is your vcore/temperatures? and how did it affect your power consumption?
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post #2 of 12
I was messing around with undervolting a while back and here are my thoughts.
Power usage was way down. I managed to go under .9 volts @ stock speeds. The temps on my air cooling setup were laughably low. All in all, if i am going to leave my PC on over the weekend to download a bunch of games from Steam or something i usually go to these settings. But when gaming i reboot to the overclocked 4.5 ones.
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post #3 of 12
I didn't really play with undervolting but I can run my cpu at 3.6 using 1.14 vcore. It doesn't really affect the temps that much, maybe 1-2 degrees tops.
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post #4 of 12
Quote:
Originally Posted by ekg84 View Post
Im planning to undervolt an i7 960, so i'd like to ask those of you ladies and gentlemen who did so - how low is your vcore/temperatures? and how did it affect your power consumption?
I got a D0 batch 3939B215 with a high stock VID at 1.27... But stock VIDs dont mean much. I run 4.2 HT on at 1.31V stable and now I run it at 4.0 at 1.22 with HT on.

I was able to run 4.0 stable at 1.19 with HT off.
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post #5 of 12
Quote:
Originally Posted by Machiyariko View Post
I was messing around with undervolting a while back and here are my thoughts.
Power usage was way down. I managed to go under .9 volts @ stock speeds. The temps on my air cooling setup were laughably low. All in all, if i am going to leave my PC on over the weekend to download a bunch of games from Steam or something i usually go to these settings. But when gaming i reboot to the overclocked 4.5 ones.
My
0.847v?

What kind of temps do you get with that?

Just realised that's the exact same thing I would've been saying if you used 1.6v "what kind of temps do you get"
post #6 of 12
The .847 isn't super stable with IBT. So I did a run just now with .88 or so.


Here is a test I did a few weeks ago when it was really cold here in California.
The High temps in this picture are when i was running Prime95. 28c was the highest on that one.


And because you mentioned it, here is the 1.6v test. I didnt take a SS of the temps but this was on my old WCing setup so I would imagine about 70c.

Edited by Machiyariko - 12/21/10 at 9:04pm
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post #7 of 12
Thread Starter 
Quote:
Originally Posted by Machiyariko View Post
I was messing around with undervolting a while back and here are my thoughts.
Power usage was way down. I managed to go under .9 volts @ stock speeds. The temps on my air cooling setup were laughably low. All in all, if i am going to leave my PC on over the weekend to download a bunch of games from Steam or something i usually go to these settings. But when gaming i reboot to the overclocked 4.5 ones.
My
these are some awesome numbers there Do u know how much lower is your power consumption with this enormously low vcore?
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post #8 of 12
How about these:

I believe both these pictures are with the H50 or stock cooler though, that's why temps might not be the greatest.


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post #9 of 12
Quote:
Originally Posted by ekg84 View Post
these are some awesome numbers there Do u know how much lower is your power consumption with this enormously low vcore?
I don't have a Power Angel so I can't say how much lower it is but the temps are great so I'm sure it's less.

http://www.seasonicusa.com/power_angel.htm
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post #10 of 12
Thread Starter 
Quote:
Originally Posted by Elite- View Post
How about these:

I believe both these pictures are with the H50 or stock cooler though, that's why temps might not be the greatest.


i'd say pretty good results, i love your wallpaper btw do u have a power meter? i am really curious how much less is the power consumption with vcore that low.
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