SpeedFan Voltage issue

SMAndy · 11 Apr 2009 at 08:48

Hi Everyone,

I've recently bought a new system. I went for:

AMD Phenom II X3 720 BE (AM3) (Multiplier at 16, so running at 3.29Ghz)
Asus M3A78 Pro
nVidia GTX260
I kept my memory (4x1GB GeIL 6400C4 Ultra) (HT Ref is at 205, so running at 820Mhz, 4-4-4-12-20-2T (manually set)
Kept PSU (OCZ 650W)

My issue is that when i run SpeedFan to check my temps (all are good) it reports the voltages as well. Most of them look pretty close to what they should be, but my +3.3V is reading as ~1V most of the time.

Pretty sure this would mean failure if it were actually running at this... the BIOS reads it as something around 3.36v, which is perfectly fine...

Am I correct in saying that Speedfan is reporting a different voltage, or reporting it wrong? Here is a complete list of my voltages...

Vcore1: 1.41v
Vcore2: 3.28v
+3.3v:0.99v
+5v: 4.95v
+12:12.29

-12v:-16.97v
-5v:-8.78v
+5v:6.85v
Vbat:4.08v

Thanks in advance.

Edit: I think i should mention that i've done some OC'ing in the BIOS. vNB is at 1.3v, vDIMM is at 2.15v (rated to 2.3), and CPU-NB voltage is at 1.3v also. vCore is set to Auto (reads at 1.4v).

RJC · 11 Apr 2009 at 09:21

I would not trust a software programe to check voltages, only real way is using a calibrated multimeter.
Unless your getting BSOD'S, lock up's ect then I would ignor, another monitoring tool is HW Monitor.

Ducky Spud · 11 Apr 2009 at 17:02

Id go from what your BIOS is saying, always better than any software IMO

SMAndy · 15 Apr 2009 at 09:43

Thanks for that. I downloaded AMD Overdrive to do some voltage changes, and i saw that it was reporting some voltages the other way around.

That Vcore2 is actually my +3.3v, which at 3.28, i'd say is pretty damn close.

My OC wasn't completely stable... i changed some things around and my CPU is now at 3.28, vcore is at 1.46 according to speedfan, 1.43v in bios.

Memory running at 820, still got HT ref at 205. Seems this is as far as i can go without Prime95 failing on one core after 2 hours.

Graphics card, i haven't overclocked yet. But its an XFX GTX 260 Maxcore (the one with the offer ending today) so hopefully i'll get some good overclocks on that. Once I get the card overclocked, i'll install 3dmark vantage that comes with it, and post what results i get!

Phatjayunoi · 15 Apr 2009 at 17:34

If your BIOS or motherboard's official software reports correct voltages within the acceptable ranges then it will be fine. Like mentioned before, don't fully trust third party software as there would be incompatibilities. Speedfan reports my +12v rail as 0.83v, yet my BIOS and my Gigabyte motherboard's official software reports it fine at 12.185v.