A question about voltages for an AMD FX 8320

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Goomb4_

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Jun 19, 2014
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I've been kinda worried lately because I've seen my 8320 voltage go as high as 1.445 volts when playing some games and using some cpu heavy applications. Should I be worried about these high voltages on a stock 8320?

PC specs:

AMD FX 8320 @ 3.5 GHz
GIGABYTE GA 970A UD3P Motherboard
Crucial Ballistix sport 8 Gb ram kit @ 1600 MHz
GIGABYTE GV-N75TOC-2GI Nvidia GEFORCE GTX 750Ti
1TB Western Digital blue HDD
Samsung 840 pro 128 Gb SSD
EVGA 600B 600W Power Supply

 
Solution
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I say your best bet is to set the voltage to its stock levels manually within the BIOS (Use the program CoreTemp to find out what 'said stock voltage is).

What's happening is either one of two things, I'm uncertain which is at fault here, but I suspect the former:
- AMD TurboCore tech comes into play on certain cores under some load, auto-overclocking to the stated amount on the box (Think of it like a boost), however, to do so it's drastically over imagining the voltage it needs, shooting up into the 1.4v range.

or...
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Andrew Buck

Andrew Buck

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Jan 28, 2014
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Yes. Mine ran at 1.3 V or below. Set a fixed voltage in BIOS to 1.3 V.
 
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Goomb4_

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Jun 19, 2014
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is 1.356v a good voltage to start off? and I've realised that the voltage only goes up to 1.430v when the cpu is in turbo mode, should i disable turbo mode and just oc very slightly to 3.6 - 3.7 GHz?
 
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Guest

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I say your best bet is to set the voltage to its stock levels manually within the BIOS (Use the program CoreTemp to find out what 'said stock voltage is).

What's happening is either one of two things, I'm uncertain which is at fault here, but I suspect the former:
- AMD TurboCore tech comes into play on certain cores under some load, auto-overclocking to the stated amount on the box (Think of it like a boost), however, to do so it's drastically over imagining the voltage it needs, shooting up into the 1.4v range.

or

- Because the motherboard is set to do things automatically, it may be taking the same guess-stab at what voltage it needs. Also getting it wrong.


Best solution I can suggest is to punch it in manually. Disable TurboCore and either keep it at the stock voltage (Ie, do nothing once it's disabled), or, manually up the multiplier (CPU Ratio in the BIOS) to the labelled 'Boost' amount.
I forget what it is on the 8320 but it's usually about 0.2GHz above stock.

While this will up the max frequency across all cores as opposed to just a few like TurboCore does, I'm 90% confident you can achieve this without needing to change any voltages, and also without outputting too much more heat (The stock cooler should be able to handle this if you use it).
Check for stability using Prime95 afterwards.

If the manual effort works, you will effectively be using less power, outputting less heat and overall just keeping voltages and such at a relatively fixed rate rather than computer-guess work.
 
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Solution
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Goomb4_

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Jun 19, 2014
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4,510
Alright then. I've disabled CPB (Core Performance Boost or AMD TurboCore, whatever you want to call it), and the voltages have gone down when I load the cpu ( Absolute max I've seen is 1.368v, instead of the 1.440v I was getting, but it stays around 1.350v on full load.) The cpu has also been running cooler and that's always good I assume. Later down the road I'll pick up something like an h80i and then overclock the cpu to about 3.9 GHz Thanks for the help Distello, (and the Turbo frequency is 4.0 GHz on the 8320). :D
 
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