Amd fx 8320 OC question

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Chris201262

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May 1, 2016
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Amd fx 8320 on a gigabyte ga 970 gaming mobo.

Have overclocked to x19.5 in bios (3.9Ghz)
Trying to set a lower vcore than the 1.375 its showing stock, however in the bios it doesnt let me change to a typed in manual vcore.

The options are auto, normal and then selecting a predefined +/- value, the first - being - 0.075 but that would take it to 1.3 and i want 1.325... Anyway to change or override this?

Also, when i boot into windows no matter what i set in the bios with the frequency mulitplier and the vcore voltage - amd overdrive overrides this with its own values even if i havent got amd overdrive running???

Even with bios vcore set to -0.075 when boot into windows voltage is showing 1.375 even with amd overdrive not running.

Therefore its like the bios settings are redundant and amd overdrive is setting it all.... Iv set amd overdrive to x19.5 to match the bios for 3.9Ghz and changed vcore in overdrive to 1.325 whilst leaving vcore auto in bios. Voltage still fluctuates at this, just doesnt go above 1.325.

Ideally i would like the bios settings to be binding, i just want overdrive for acurate temperature monitoring - without it overriding settings from the bios.

Can i change this?... Or are my settings fine with letting amd overdrive set voltage?

Thanks
 
Solution
bgunner
Using a so called "Demanding Game" to stress test leads to those coming back and saying they have random crashes and freezes. If you have skimped out on stress testing then you can not say that That OC is stable. Yes Prime 95 and Intel Burn Test are not real world loads, and are more intensive, But are designed to try to put teh CPU under an extreme load to see if it errors so it does not do it randomly. If you want to say your system is stable and it may not be that is for you to try to figure out later.

AOD is not meant to monitor Voltages unless you are using it to overclock, which I always recommend against, But is the most accurate for monitoring AMD CPU temps. Just be aware if you start seeing High temp readings in HWinfo, you...
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bgunner

bgunner

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Feb 13, 2009
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It sounds like the BIOS settings are not stable and the motherboard is trying to start as set. WHen it can not it restarts 3 times trying hte set BIOS settings and then reverts to a default state and then it can boot fine.

I recommend resetting your bios back to stock and set the Power Setting in Windows to performance which will set the CPU to run at 100% of the frequency constantly to see if the issue remains.

To be honest this sound more like a storage issue than a CPU not keeping up issue.
 
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RaDiKaL_

RaDiKaL_

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Apr 17, 2006
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No, that's not a normal behavior, post your full pc specs including the exact model of your PSU and mobo.

If your mobo doesn't have at least 8+2 phase modules you won't be able to achieve a stable OC beyond 3.5ghz, and if it has less than 8 phase modules that mobo is not even designed to support your FX-8320 regardless of what the mobo info says.
 
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Chris201262

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May 1, 2016
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Apologies with this thread, i tried to post it unsuccessfully on my phone yesterday so went on comp and posted... Now come on my phone this morning and it randomly posted it. Iv edited the OP to what i wanted to ask this morning.

Sorry about that. Cheers
 
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bgunner

bgunner

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Setting the Voltage settings to Normal should allow you to set the voltage manually.

If AMD Overdrive is overriding the BIOS settings and you do not want them to and can not stop it then Uninstall AOD and use Ccleaner to clean out the registry entry's and restart. you should find it is no longer over riding the settings. You can then reinstall AOD and it should not override your BIOS settings.

Do Not use AOD for overclocking only use it to read the Thermal Margin since it is software and overclocking software can add instability where it normally would not be there. SO uninstall AOD and clean registry and see if AOD stops overriding your BIOS settings.
 
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Chris201262

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May 1, 2016
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In the bios i go into "advanced voltage settings" and it lists vcore at the top, only one option related to it and then in the box it is set to auto... If i type in a custom voltage as soon as i enter it goes back to auto - i can only alter it using the + and - on keyboard... When i press minus is changes to "normal" pressing again changes to a negative but the lowest negative is -0.075 and i wasnt looking to drop it that far, iv found that going to 1.325 in aod is nice and stable. it doesnt state what the normal vcore is though. Im wondering if its worth simply uninstalling amd overdrive and setting vcore in bios to normal and using hwmonitor to check what its actually defaulting to as "normal".... Im starting to think the original 1.375 im working from is what overdrive has set rather than the cpu/ motherboard.

Sorry, never really bothered with learning OC'ing before.

My mobo power phase is 5+2+2 btw, thats why just going for 3.9Ghz with a hopefully slightly lower vcore voltage.

Thanks
 
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Chris201262

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May 1, 2016
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Okay, so iv uninstalled amd overdrive with revo uninstaller and removed registry entries too... Now iv set vcore in bios to -0.115v, but im confused to if its actually working.

When i first uninstalled AOD i checked in bios with vcore "auto" and it stated it was at 1.356.

When changing the minus of the vcore in bios it seems to change that figure, at the -0.115v iv set it now reads 1.284v in the bios.

When i load into windows however on HWINFO, the cpu cores are all showing as 1.375 - but these dont seem to shift... Further down on HWINFO under motherboard there is a vcore there which limits at 1.284 the same as the bios reading.

However if i open up the HWINFO main report the vcore seems to hit 1.375v.

So have my under voltage settings worked or not? Any better way to check for sure without reinstalling AOD as dont want it to override stuff again!!

Thanks
 
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bgunner

bgunner

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OK to help solve your confusion please use CPU-Z. This will give you the correct voltage readout that you need. Now to tell if it is working first set the voltage to auto and see what CPU-Z reads then reenter the BIOS and lower the voltage. Check CPU-z again and you will see whether or not the voltage is set to what you want.

NOW, be aware that actual voltage and the BIOS setting, not reading, can be different so check CPU-Z for actual voltage. EXAMPLE: BIOS setting may be set to 1.375V But actual voltage could be north of 1.415V.
 
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Chris201262

Commendable
May 1, 2016
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I have successfuly set the clock to 4.0Ghz @ a slightly lower 1.332v vcore and everything seems stable. Not really a fan of prime95 as its load is so unrealistic and harsh on system but checked playing a demanding game and temp reached no more than 48c after quite some time... Which isnt bad for an air cooled amd fx chip.

Seems that AOD simply states its expected out the box voltage for the chip and doesnt actually monitor it real time, which caused the confusion. Now monitoring it with HWINFO64.

Only thing is my gigabyte board dont seem to be reporting any VRM temps to any of the monitoring software but cant see it being that high with lower temps everywhere else plus the VRMs have heatsink.

Cheers
 
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bgunner

bgunner

Judicious
Feb 13, 2009
5,144
14
32,515
Using a so called "Demanding Game" to stress test leads to those coming back and saying they have random crashes and freezes. If you have skimped out on stress testing then you can not say that That OC is stable. Yes Prime 95 and Intel Burn Test are not real world loads, and are more intensive, But are designed to try to put teh CPU under an extreme load to see if it errors so it does not do it randomly. If you want to say your system is stable and it may not be that is for you to try to figure out later.

AOD is not meant to monitor Voltages unless you are using it to overclock, which I always recommend against, But is the most accurate for monitoring AMD CPU temps. Just be aware if you start seeing High temp readings in HWinfo, you will be told to use AOD and watch the thermal margin to tell if you are actually having issues since those other programs do not accurately read the FX or A series temps.

Very Few motherboards actually have temp sensors on the mosfet's for the VRM. My particular Asus Sabertooth does but so many others don't. You most likely won't have issues with voltage throttling on your board so I don't believe there should be any reason to be concerned on this.
 
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