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Please help, FX 8120 dropping clock, don't know enough to understand problem - Page 5

post #41 of 56
Thread Starter 
Well, I used AMD OD to watch my cores during a Prime95 test and it does the same stuff. Normal 3.1 Ghz for about 20 seconds, then 1.4 for 20, repeat. This is so disheartening, i've been trying to solve this for ages and every time I get close it starts doing things like this again. Thank you so much for helping
post #42 of 56
Thread Starter 
So the problem happened when I ran Prime95, but not AMD OD's stability test. On Prime95, what happened was it was normal for about 45 seconds running at anywhere from 31-26 degrees celcius, and then all of the sudden it goes down to 1.4 GHz and the temperature jumps up to 41 degrees celcius. How does that even make sense! frown.gif
post #43 of 56
Quote:
Originally Posted by RGBKey View Post

So the problem happened when I ran Prime95, but not AMD OD's stability test. On Prime95, what happened was it was normal for about 45 seconds running at anywhere from 31-26 degrees celcius, and then all of the sudden it goes down to 1.4 GHz and the temperature jumps up to 41 degrees celcius. How does that even make sense! frown.gif

This unfortunately sounds like the board is Throttling the VRMs. AMD OD's Stability Test is no where near as demanding as Prime95, hence it isn't making it throttle. Have you tried gaming etc?

Also I'd use HWinfo 64 or 32 depending on OS you can get it Here

Very good for reading all sorts of data - yum yum!
post #44 of 56
Thread Starter 
Quote:
Originally Posted by Synister View Post

This unfortunately sounds like the board is Throttling the VRMs. AMD OD's Stability Test is no where near as demanding as Prime95, hence it isn't making it throttle. Have you tried gaming etc?

Also I'd use HWinfo 64 or 32 depending on OS you can get it Here

Very good for reading all sorts of data - yum yum!

The only game I have been able to notice it on is Planetside 2, being very demanding on the CPU. I have the FPS counter open in-game and it goes back and forth between like 15 and 40 on the lowest settings with the fluctuating CPU. Although normally I play TF2, so performance really isn't an issue with that one tongue.gif. I just wish it would quit being dumb. What can I do now?
post #45 of 56
I'd try playing PS2 again, now that APM is disabled. See if the same throttling occurs. Prime95 is a 'non ordinary' load scenario, not many programs will apply such a heavy load. I believe that board will run your CPU as stock fine without throttling in normal use. If you were to bench or say do some form of conversion or rendering with the CPU then yeah, it'll throttle.

I'm not sure if there is any other setting on that board which would be throttling the CPU. I had throttling on an M5A97 Pro R 1.0 with a very highly clocked 1090T - and it was due to the VRMs overheating. It just didn't have the quality and quantity of phases to fuel a 4Ghz + core 2900Mhz CPU NB biggrin.gif

My board was the M5A97 Pro R 1.0, and had heatsinks on the VRMs unlike the ASUS M5A97 LE R2.0. I'd keep it all stock check its running ok for now, and save for an M5A99FX PRO R2.0 or equivalent to really open the CPU up in the future.

Can we get a screenshot of HWinfo after a AOD and PRime run so we can check it's definitely VRMs and nothing else.
post #46 of 56
Thread Starter 
During the test or after it? I'm confused what information you want from it.
post #47 of 56
Quote:
Originally Posted by RGBKey View Post

During the test or after it? I'm confused what information you want from it.

Sorry, if you leave HWinfo open, it will record the max, min, and average achieved throughout the time it's been open. Like this:

Like you can see on the left of that image. I just left it open while running IBT AVX.
post #48 of 56
Thread Starter 
Quote:
Originally Posted by Synister View Post

Sorry, if you leave HWinfo open, it will record the max, min, and average achieved throughout the time it's been open. Like this:

Like you can see on the left of that image. I just left it open while running IBT AVX.

Mine doesn't look like that, but I made a report with a whole bunch of information :/ not sure if that helps
http://puu.sh/7I343.HTM
post #49 of 56
Thread Starter 
Actually, here's the .csv: http://puu.sh/7I49J.CSV

It pretty much confirms it's thermal throttling, the temperatures displayed make a lot more sense than the ones in AMD OD. The temp steadily climbs until a point, where it clocks down and the temp drops a whole lot, then it clocks back up again and repeats. At least I think I know what the problem is now, I just don't know how to fix it without just opening the case and pointing a fan at it.
post #50 of 56
Quote:
Originally Posted by RGBKey View Post

Actually, here's the .csv: http://puu.sh/7I49J.CSV

It pretty much confirms it's thermal throttling, the temperatures displayed make a lot more sense than the ones in AMD OD. The temp steadily climbs until a point, where it clocks down and the temp drops a whole lot, then it clocks back up again and repeats. At least I think I know what the problem is now, I just don't know how to fix it without just opening the case and pointing a fan at it.

Looking at the CSV it shows throttling occurring at 62°C on the socket, check in the Bios for a setting like 'overheat protection' and disable it, and repeat.

It would have been easier to see if you'd shown a screenshot of the HWinfo Sensor Window open. tongue.gif
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