CPU frequency dips and rises whilst gaming.

austineusd · Aug 31, 2017

My CPU slows down while playing games and wont ever hit and stay at max frequency. There's no way that its thermal throttling because i have a liquid cooler on it. processor is the AMD FX 8370 with a corsair liquid cooler. Please help this is driving me crazy

Also the AMD system monitor says that the temps don't ever rise above 49c.

GhislainG · Aug 31, 2017

What motherboard? One with a 8+2 phase heatsinked VRM?

austineusd · Aug 31, 2017

It's an MSI 970 gaming, I've done some research and I think I need to position one of my fans over he heatsink on the bottom VRM as it seems to be overheating.

GhislainG · Sep 1, 2017

You are correct; liquid coolers are good for the CPU, but they don't cool the VRM. Unfortunately the VRM can cause throttling when it gets too hot.

austineusd · Sep 1, 2017

o I put a fan over the vrms amd they are not physically hot to the touch anymore while gaming. But the frequency dip still happens. I've messed with the bios all day yesterday turning off cool n quiet and putting windows in high performance mode. Nothing seems to be working

GhislainG · Sep 1, 2017

According to AMD Overdrive, what are the thermal margins at full load?

austineusd · Sep 1, 2017

thermal margins don't drop below 40 in overdrive.

GhislainG · Sep 1, 2017

Start by testing the CPU instead of concentrating on FPS. What is the CPU frequency while running Prime95 Small FFTs? How low do the thermal margins get?

austineusd · Oct 3, 2017

GhislainG :

hey sorry for the late reply, I thought I had fixed it. IDK what Prime95 FFTs is if you could elaborate? now the processor doesnt ever go above 1.36 ghz

GhislainG · Oct 4, 2017

http://www.guru3d.com/files-details/prime95-download.html

Using AMD Overdrive to check the thermal margins (distance to throttling) is much better, but your CPU probably doesn't overheat. Check the position of the SLOW_MODE switch (you can see it in a picture at http://www.hardwarecanucks.com/forum/hardware-canucks-reviews/69124-msi-970-gaming-amd-am3-motherboard-review-4.html) and if it's correct, contact MSI to RMA your motherboard. It's a known issue with that motherboard that is quite good.

austineusd · Oct 4, 2017

GhislainG :

the SLOW_MODE switch is in the off position, this whole thing is so frustrating. Seems like it failed overnight to when it started happening. Is there a limit on the amount of time ive owned the MOBO for them to replace it? like does it have to be in a certain time frame?

GhislainG · Oct 4, 2017

It should have a 3 year warranty.

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