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Sabertooth 990FX/AMD965BE voltage flux and wrong reading in cpuz

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March 6, 2013 11:41:58 AM

I have a Sabertooth 990FX and a AMD 965BE and I cant get the voltage that's set in BIOS to match up with cpuz monitor in windows. It reads about 0.012 different and jumps from around within that 0.012v. I have it set at 1.41875v and in bios ez mode screen, it reads 1.428/1.440v, in cpuz, it reads/jumps 1.428/1.440 and 1.452v (under load). I have been trying all the auto setting adjustment in digi + power control. any ideas? asus support says its a bad cpu voltage sensor regulator, but others are having similar issues as well. Thank You. Please let me know what other info you need or questions you have.
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March 6, 2013 12:30:59 PM

I wouldn't trust CPU-Z to report completely accurate voltage numbers, trust the BIOS numbers more than any piece of software. If settings are saved in BIOS and stability is there, ignore what CPU-Z is saying. Also that is a very tiny difference, it would have no real affects of your system if it is in fact that much high.
March 6, 2013 12:56:07 PM

understand, but!

in bios ez mode screen it reads incorrectly and in the value running next to the manual entry area in bios it reads wrong... its in bios too. are they using the same inaccurate sensor? is there a rma type board issue here? thanks
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March 6, 2013 3:20:34 PM

As long as any power saving feature is activated (and it's hard to deactivate them all) the frequency and the voltage will constantly be adjusted to the current cpu load. That is done far more often, then software can read the current value. That's the main reason, why the displayed readings are always wrong.
March 6, 2013 4:35:57 PM

so the consensus is that the board is properly functioning and is not faulty. the amount of "auto" settings with this board is more than I have ever seen before. The end result very well could be a stable, high overclock with jumpy/incorrect voltage readings in bios monitors and cpuz. big deal?
March 7, 2013 12:47:55 PM

I cant pass stability test (Prime95) with cpu voltage as high as 1.43125v! Any suggestions?
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March 7, 2013 3:05:25 PM

So, what's the problem? Overheating? Ram errors?
March 7, 2013 4:49:11 PM

ram gets through memtest at current settings fine, but at a high cpu voltage and digi+ settings at where they're at, a worker will fail in Prime95. temps are fine. its a cpu instability issue i presume.

Its probably a setting on auto or similar that is causing issues?

CPU: AMD Phenom II X4 965BE 4.01GHz (200x20@1.43125v)
MoBo: ASUS Sabertooth 990FX R2.0 (CPU/NB 2600MHz)
RAM: G.Skill 8GB (4x2GB) DDR3 1600 8-8-8-24-40-1T @ 1.645v
GPU: MSi Twin Frozr Radeon HD 7850 2GB
HSF: Corsair H80i | PSU: Corsair HX750W
HD: WD Black 1TB 7200RPM 64MB SATA 6.0Gb/s
OS: Windows 7 64-bit | Case: CM HAF 932
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