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8320 cores 0&1 @ 4.9GHz and the rest at 1.4?

post #1 of 7
Thread Starter 
Hey guys,

So I'm pursuing to get into the 5GHz club with my 8320.

Now I know my Motherboard ( 970a-ud3) cant handle too much pressure before throttling. It does this after 10 seconds of Intel burn -.-

So knowing this, I thought id go ahead with the run to 5Ghz for a one time thing.

4.7 was fine, throttling like hell but still fine.

I went ahead with 4.9 being impatient. I upped the volts to 1.46 as by looking at the 5Ghz club, in order to get there, you need 1.5+ volts.

So after a re-boot, I open up CPU-Z and it read 4.9ghz with 1.46 volts. But then when HWINFO64 opened, it only said that cores 0&1 was at 4.9 and the rest was at 1.4?


So my question would be how do i fix this?

Do i add more volts to allow the other cores to get to 4.9?

Or can my board/PSU not deliver the right amount of volts?

Build:
AMD 8320
MOBO: Gigabyte 970a-ud3
PSU: Corsair CX 500M
RAM: Kingston Hyper X 8GB @ 1600



Thanks in advance for all the help & reading this
    
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post #2 of 7
You didn't even put an load on the CPU..... smh

P.S. your going to break something if you keep going like that. I've burnt up 2 CX PSUs by overclocking on them. STOP!!!!!!
post #3 of 7
Are you trying to OC just only 2 cores? IMO that's quite a loophole getting into a X ghz club, haha.

your not under load so your clocks will fluctuate and not all cores will at the same time.

if your clocks are fluctuating while under load then disable APM in the bios.
if your still fluctuating then something else is likely throttling.
post #4 of 7
Thread Starter 
Well i took you advice and re-loaded the figures back into the bios as i was back to my 4.6 stable again. After i saved and exited, i got a boot failure. So i got a bit worried and put it back to 4.6. It loaded but still the same problem even when i put the load on 100%

8320issues_zps70e582be.png

And i dont have APM mode in my bios. Been looking for that before but dont seem to have it
    
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post #5 of 7
Quote:
Originally Posted by 8320verclocked View Post

Well i took you advice and re-loaded the figures back into the bios as i was back to my 4.6 stable again. After i saved and exited, i got a boot failure. So i got a bit worried and put it back to 4.6. It loaded but still the same problem even when i put the load on 100%

8320issues_zps70e582be.png

And i dont have APM mode in my bios. Been looking for that before but dont seem to have it

one thing I find odd is that hwinfo showing your cpu voltage of 1.2xxV, and then cpuz saying another volts 1.4v. if your right click where your clock speed is on CPUZ it'll bring up all your cores, do they show the same has hwinfo when under load?


did you makes sure to update your bios when you got the board/cpu? I remember reading it was required for my board when using 8core cpus.

I have the gigabyte 970a-UD3P, I'd think you would have APM under where CnQ,turbo boost, C state and other power saving features are.

another option is HPC but im not a fan, it makes it so your cpu will run at max clocks, 100% of the time, even when idling. which means more heat, more power used.
if you revert your bios to default settings, do you have this problem even when at stock?
Edited by Sadmoto - 3/21/14 at 11:10am
post #6 of 7
Thread Starter 
Warning: Spoiler! (Click to show)
Quote:
Originally Posted by Sadmoto View Post

one thing I find odd is that hwinfo showing your cpu voltage of 1.2xxV, and then cpuz saying another volts 1.4v. if your right click where your clock speed is on CPUZ it'll bring up all your cores, do they show the same has hwinfo when under load?


did you makes sure to update your bios when you got the board/cpu? I remember reading it was required for my board when using 8core cpus.

I have the gigabyte 970a-UD3P, I'd think you would have APM under where CnQ,turbo boost, C state and other power saving features are.

another option is HPC but im not a fan, it makes it so your cpu will run at max clocks, 100% of the time, even when idling. which means more heat, more power used.
if you revert your bios to default settings, do you have this problem even when at stock?

I just lowered my volts even further to see if that helped. It did

I will try to get to 5Ghz tomorrow after i read up further on what is causing this

Thanks for your help


Edit: Warning: Spoiler! (Click to show)
I was playing Minecraft and got a massive fps drop. I opened up HWINFO64 and only 2 cores where at 4.6. It seems like the CPU uses what it needs and puts the rest at idle

I went into the BIOS and reset everything to the default values.

The CPU now idles on all cores at 1.4Ghz but when i open cinebench, all cores hit 4.0 or 3.7Ghz

There must be something Ive done to set the CPU at 1.4 idle but i have not touched any settings other than the ones in the BIOS.

Could someone please help me out. At the moment, im not too sure if i ruined a part of my hardware or not and im sort or freaking out

8320renderstock_zpse36056be.png

Edit#2: So after going back into the BIOS and getting rid of all the power saving crap ( Cool & quiet... ) and turning on HPC, it seems to be working. Ive been on mine-craft, there's been no fluctuation in the core speed.

Looks like il be OC'ing tomorrow again back to 4.6 and onwards
Edited by 8320verclocked - 3/21/14 at 12:47pm
    
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post #7 of 7
Identifying what type of throttling you have going on is going to give some insight into whether or not you can overclock in the region you are shooting for. If you're seeing the "1.4ghz, 2.0ghz, 2.5ghz 3.0ghz" "low power states" pop up, these are low power states made available by cool-n-quiet. These are not normally induced as a means of throttling, but I have observed forced dips to low-power states to prevent over-heating on the FM2 platform, and some people have reported performance blips in AM3+ platforms that point to a similar throttling strategy. If you are seeing "blips" under a load down to 1.4ghz(with voltage dips) when there should be no idle time given the workload in question, this means something is overheating. You can try to solve this by improving the cooling of the VRMs or CPU or both.



The power saving states can generally be overridden at the software level by changing the "policy." The above is a screenshot of a Linux Mint Mate Panel with load/speeds/temps/voltages all being reported by various utilities. In my case, the actual speeds are different from those reported as the BCLK is set to 250mhz (actual speeds would be 1.75ghz, 2.5ghz, 3.1ghz, 3.75ghz, 5ghz). Most of the time, the clocks idle along at "1.4ghz" (or 1.75ghz in this case).

Dipping to low power states automatically is not *normally* a throttling issue, it just means there isn't enough of a load on the CPU to bother keeping it running full speed. Like a petrol powered compressor that automatically revs up when the demand for pressure kicks on, and idles back down when the tank is up to pressure. You can experiment with disabling cool-n-quiet but it may not solve anything.


Another type of throttling would be that induced by Advanced Power Management.

UD3P:


UD3:


Unfortunately, the UD3 is missing manual control over this feature. However, that doesn't necessarily mean that it can't be deactivated or mostly overridden. I'd venture to bet that simply turning off Core Performance Boost will likely include the disabling of APM as they are heavily related (in fact, turbo won't even work without APM). If not, enabling HPC mode may remove at least some of the thermal throttling imposed by APM.

In my experience, APM, at least as implemented on the UD3P, is a "tricky" bugger that can induce throttling under a variety of conditions. I'm convinced there are policies at work there that go beyond temperature alone, which can be counterproductive when overclocking.

If APM is enabled, you should be able to observe clock speeds scale down with increasingly parallel loads by significant margins.. to the point that under a full 8-threaded workload, the clock speeds would be ~4ghz or less depending on voltage. On linux, we use the utility cpufreq-aperf...



Find a windows utility that will reports calculated clock speed per core like this one so that you can observe the throttling behavior and identify it as APM related or not.
     
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