Originally posted by: wpcoe
Originally posted by: Conjugal Visit
I've read some threads here and there where folks are undervolting, yeah, and happy to do so. I don't know enough about that, frankly. Personally, if the manufacturer says "run my Ram at 2.1v if you wanna do 4-4-4-12" for instance, I set it to 2.1v. IMO, I'd leave the voltage at Normal - 1.3500 - and then implement EIST and C1E, which will undervolt your rig when it's just sitting around. Or go for it, and start dropping down a step or two, but I'd Orthos the heck out of it, just to make sure when you launch some mission critical shite, undervolted, you don't suddenly freeze, crash, ort start getting computational errors...
Last night I lowered the core voltage to 1.25v mainly to see what the difference in operating temps would be. Then I went to bed and left the Orthos blend tests running. Got up 5.5 hours later, and no errors at that point, but I will test it longer later on.
Before I went to bed, I noted the temp readings with Orthos running and air con off with a room temp of 27.5°C, at the point where the Orthos had been running 8 mins. (BTW, until yesterday I didn't realize I needed to run two instances of Orthos to totally "max out" the RAM. With only one instance of Orthos running, it would only use about 2.5GB RAM). With 27.5°C room temp, Orthos running 8 mins: @ 1.35v the core temps were 57°+59° and @ 1.25v were 52°+54° -- an impressive (to me, at least) drop of 5°.
This morning, doing the same test, but with air con running and room temp of 23.5°C, @ 1.35v the core temps were 49°+50° and @ 1.25v were 45°+47°.
Considering the room temp dropped only 4°C, I was surprised at how much that appears to have affected the core temps.
All the above experimenting was done with fan control OFF in BIOS, i.e. all fans running full bore. And, for consistency, I started the second instance of Orthos 30 secs after starting the first instance for each test.
For kicks, I took screen shots of the experiment this morning:
http://www.wpcoe.com/1.35v.gif
http://www.wpcoe.com/1.25v.gif
Thanks for all the feedback. I've been reading some of the other threads about this mobo and am impressed with the knowledge of the participants and the patience and willingness to share info.