FX8350 "Stock" at 4.3GHz

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puzoni

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Oct 13, 2015
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Hello guys!

My computer freezes itself. It's a 6 months build. All new parts.

What's happening: my CPU seems to be automatically overclocking. I just realized that it's showing 4.3GHz (4334MHz precisely) on my settings (everywhere: Windows properties, CPUZ, BIOS, HWiNFO 64, etc), and the stock should be 4.0GHz. The problem is I don't even know how to overclock - I just know the basics because I was looking for the reason of freezing/crashing and everything leads me to bad overclock issues.

I tried the obvious: reseting BIOS to default settings and setting CPU clock manually.
When I save it, it's back to 4.3GHz at stock ~ 1.368V.

I've already stressed everything else on my PC, only happens when stressing CPU, and it doesn't even need to reach high temps to freeze (sometimes at 35C, 45C), it's random.

Any ideas? I'm out of them.

Thank you guys!

My setup:
PSU: Corsair CX600M
MoBo: Asus M5A97 EVO R2.0
CPU: AMD FX 8350
GPU: XFX HD7870 Ghost Edition
RAM: 1x8gb Kingstom 1333MHz
HDD: 500Gb Samsung HD502HI (it's old but working)
Stock cooler - it's not the issue, it was happening with my CoolerMaster Seidom 120V water cooler that I'm waiting to come back from RMA.
Heatsink properly seated.
 
Solution
nayrnayr1
Turn off all of the auto tuning and power saving features and do it manually. That fixes all problems associated with the clock and freezing up. If it is freezing, turn turbo core off and keep it at stock with all power saving features off and tune the voltage and the clock to what you need it to be.
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RedJaron

RedJaron

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Sep 20, 2011
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Many CPUs now have limited automatic overclocking features ( Turbo Boost for Intel, Turbo Core for AMD ). Basically, if the CPU gets put under load, but it's still cool enough, it will spin up on its own to a predetermined boost clock. If it gets too warm, then it will automatically come back down.

Now, the 8350 is only supposed to turbo up to 4.2 GHz, so it seems you have another player involved. Suspect #1 should be your motherboard. I've had experience with Asus mboards trying to put a little extra cheat on a CPU before without the owner realizing it. The first place to look is if you have something like "Asus Optimized Tuning" enabled anywhere in your BIOS. If so, disable it to take it back to stock. Asus also sometimes puts switches on their boards called CPU Boost or something similar. Those too enable automatic overclocking.
 
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nayrnayr1

nayrnayr1

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Aug 8, 2015
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Turn off all of the auto tuning and power saving features and do it manually. That fixes all problems associated with the clock and freezing up. If it is freezing, turn turbo core off and keep it at stock with all power saving features off and tune the voltage and the clock to what you need it to be.
 
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Solution
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puzoni

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Oct 13, 2015
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Hey guys!

Both helped me, the culprit is the motherboard setting DEFAULT bus clock speed higher than it should be (216 iso. 200MHz).

All those switches in motherboard are off, but even disabling all the power saving/boost options, the bus clock stays higher. I need to set it manually to 200, and if I restore the BIOS defaults, it comes back to 216. Weird...

But the thing is: where can I find these stock numbers? I just guessed, never found them anywhere...

Anyway, water cooler is back, prime95 ran fine.

Thank you RedJaron and nayrnayr1! :D
 
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nayrnayr1

nayrnayr1

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You can find them in BIOS.
 
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puzoni

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Oct 13, 2015
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BIOS says that stock bus is 216, not 200, even with features disabled.
 
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nayrnayr1

nayrnayr1

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Aug 8, 2015
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You can manually set the clock. There is a multiplier, I have my FX-4300 at 4.5GHz with a 22.5x multiplier
 
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nayrnayr1

nayrnayr1

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Aug 8, 2015
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Well if it is than I don't know how to change it, I know everything else, but not the BCLK
 
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puzoni

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Oct 13, 2015
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Rrunning 2 days without any problems, giving some prime95 shots from time to time, everything fine. My computer sometimes got a little "repeat freeze", like when you're watching something or listening to music, you have a little freeze with the sound repeating really fast causing a strange noise, and it's also not happening anymore!
 
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nayrnayr1

nayrnayr1

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So it worked.
 
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puzoni

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Oct 13, 2015
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Yes, setting manually as you said.
Bus speed to 200MHz, multiplier stock was already 20.0.
 
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