Undervolting in Linux via modified video BIOS

corather

Full cryptobadger article:

[url=http://www.cryptobadger.com/2013/10/undervolting-in-linux-via-modified-bios/]http://www.cryptobadger.com/2013/10/undervolting-in-linux-via-modified-bios/[/url]

Looks like a good solution for us stubborn linux miners. :)

Nutnut

Nice find Corather

Gonna give it a whirl and will start a thread with my findings!

I could save over 1Kw with this!

corather

[quote name=“Nutnut” post=“31009” timestamp=“1381567669”]
Nice find Corather

Gonna give it a whirl and will start a thread with my findings!

I could save over 1Kw with this!
[/quote]

:)

If I get psyched out enough I’ll do it to my rig. It’ll save a good 150 watts at least and let me really push my cards.

Myerss

This is great, gonna try it out when i get som free time!

corather

Just an update and a bump. I tried it, and it WORKS! At least it does with my twin frozr 7950’s. I followed cryptobadger’s guide to the letter and everything worked smoothly.

[IMG]http://i.imgur.com/71lC4Ix.png[/img]

RIPPEDDRAGON

[quote name=“Nutnut” post=“31009” timestamp=“1381567669”]
Nice find Corather

Gonna give it a whirl and will start a thread with my findings!

I could save over 1Kw with this!
[/quote]

If you can post some power consumption numbers let me know ;) would like to compare some

corather

[quote name=“RIPPEDDRAGON” post=“32586” timestamp=“1382921626”]
[quote author=Nutnut link=topic=3980.msg31009#msg31009 date=1381567669]
Nice find Corather

Gonna give it a whirl and will start a thread with my findings!

I could save over 1Kw with this!
[/quote]

If you can post some power consumption numbers let me know ;) would like to compare some
[/quote]

It’s about a 50 watt per card savings on those 7950’s. The screeny reads about 500 watt pull. It went down from just under 600. The core is slightly over clocked but I didn’t touch the ram. I don’t like to OC but if I do, I usually only OC the processor as it’s easier to cool with just a good thermal compound under the heat sink.

edit: Actually for real numbers I just realized. Each card under this config core voltage 1.084, core clock 1050, ram clock 1250 (stock), each card pulls about 200 watts and produces 620-630 kh/s give or take.