AMD FX-8350 dropping core speed from 4090.97 MHz to 1396.67 when reaching 47?.

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babushaha

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Oct 10, 2015
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4,510
Hello community,

I have a question about the following issue I experience when playing games (mostly open-world games).

When I'm playing for example Dying Light I get excellent performance until I hit a certain temperature (47?) on the CPU and the game will lag for about 5-10 seconds and after that the temperature will be around 42? and this cycle will continue and it is really frustrating.

My specs are:
AMD FX-8350 Vishera
ASRock 970 Extreme4 (latest BIOS P2.80 update)
RAM DDR3 8 GB
MSI GTX 970 Gaming 4G

I also changed the stock cooler on the CPU with a Artic Freezer A30.

I have read about all kind of stuff but I do not know which step I should take to fix this issue.

Some people say the FX-8350 wont fit the ASRock 970 Extreme4 well, because the board has 4+1 power phase and your really need 8+2 power phase.

Others say that the thermal paste needs to be reapplied, because it's thermal throttling.

I dont know which step I should take and would love any kind of help to solve this issue.

I really appreciate any help you can provide.

*I used Core Temp to gather info about temperatures and CPU-Z about the core speed







 
Solution
Use AMD Overdrive to check the thermal margins at full load; if they are at least 10°C, then the CPU doesn't overheat. You are using an aftermarket cooler, but what did you do to cool the poor 4+1 phase VRM? Did you ignore ASRock's note that says "* For cooling the CPU and its surrounding components, please install a CPU cooler with a top-down blowing design." or did you add a fan to cool it? If it overheats, then it throttles the CPU (it drops down to 1.4 GHz).
That solution works on other motherboards with similar weak VRMs, no matter who the manufacturer is. Inexpensive motherboards usually work fine when using the stock cooler; people who can't afford a better and more expensive motherboard usually won't buy an aftermarket cooler until they no longer can stand the noise of the stock cooler. That's when they start running into VRM throttling issues.
 
^ agreed - the problem is people buy big tdp 8 cores & pair them with cheap motherboards because theyre on a tight budget.
The manufacturers ought to remove 125w compatibilty from these board ,they wont though as they make a lot of money on these cheaper boards.
Irregardless of whay you say asrock are by far the worst culprit,all the 970 pro & extreme boards stuggle massively with 8 core fx chips.a lot of it is down to buyer awareness but when asrock put 'extreme' on the board title & stick a big vrm sink on there you would honestly expect it to do the job irregardless.

introducing a big high tower always removes secondary vrm airflow - its ALWAYS a bad idea on 4+1 phase boards