Lowering Voltage does + lower Temps!

[Geobronc]

i was having problems with my Tbird running to hot. Lowered my voltage from 1.79v to 1.73 and lowered my 100% load temp from 52c down to 45c!

YES!

[Bender]

More voltage is only good if you have a good cooling system to get rid of the heat. I'm glad someone finally understands this simple concept. Most people just jack up the voltage and hope for a few more MHZ.

[stool]

I've got mine down to 1.675, and under full load, temps are 40C. 1.33@1496

[Hoot]

Something there does not compute. You lowered the power consumed in your CPU by a whopping 4W. Now I realize every HSF has a point where it gets overwhelmed by the wattage and temps climb rapidly, when you hit that range, but that zone is not 4W wide.
Something else has happened concurent to your core voltage drop of .06V

Hoot

[Geobronc]

Hoot,
The ambiant temps have dropped a little also, and I have taken the side of my case off. However I had the side of my case off when the weather was hotter also. I dropped the Voltage one day and didnt notice much affect, however, the next day I noticed my CPU was running a lot cooler. I was hitting 52-55c while playing games one day, and the next day it was down to 45c playing the same games. Over all I lowered my CPU voltage from 1.79 down to 1.73. Seems strange that I would get that kind of jump in temps, however, It DID happen! The weather has been cooler though. When I was hitting 52-55c the weather was in the 80'sf. Now weather is in the 65-75f.

The day that I dropped the CPU voltage, the weather was about 85f, the next day it was about 78f. Maybe that is the reason for the drop in CPU temps. Combine that factor and the voltage decrease and wa la !

We'll see what happens when the weather gets back to the 80's here again.

[dimitri]

Hey Geo, did you use the jumpers or bios to lower your Vcore? I Have the a7v133 also and my cpu wont restart sometimes when using the bios to lower the Vcore. It's on auto now and often runs the cpu 1.84-1.87!!! When i set 1.75 vcore in bios it ends up as 1.80ish and after a few hours wont restart. I'm wondering if using the jumpers would help, or if this is related to my power supply. Incidentally, how do u tell a PSU is doing it's job? My voltages are always over spec (my 3.3 at 3.6, +12's at 12.4) It's getting hot here, and i could use the lower voltage. I don't think im running enough peripherals to demand alot of power so i dont get why my 300w PSU would be the prob.. Thx for any pertinen replies

[Geobronc]

Howdy,

Yeah I run my voltage by Jumpers and also my divider and front bus speeds.
It makes everything a lot easier, there is no resetting happening to me at all.
One thing though, when I check voltage in BIOS or using SiSoft 2001 it shows my CPU voltage at a little higher than I had it set in jumper settings.

[SleepyKat]

woohoo woohoo, I feel good reading this post !!! I'm always hearing that temps like mine are high and yet I see more temps like yalls (with similar speed) that are in the same ball park as my.. I haven't seen under 40 since I switch from a K-6 II (28 C) to a TB.
TB 1 GHz AXIA 0109 @ 1.417
Vc at 1.7 vs default of 1.75, idle temp at 42, load temp approx 45 C. ,
10.5 x 135, Swiftech MC462-A with ASII.

[Phil]

that temp drop seems quite large, remember that every 10W of cpu heat only adds 2-4oC to your temp so a drop like would mean something like 20W less which I much doubt such a small voltage increase is responsable for.