CPU Temperature and FPS in-game simultaneously drop?

Europeenne · Sep 20, 2014

hey boys i just put this computer together and i play a lot of CS:GO

AMD fx 8350 (stock speeds) w/ Shadow Rock 2.0 cooler
Biostar TA970
8gb ram
9800GT (i know.... but doesn't seem to be the issue)

while in-game i typically get ~200fps, but suddenly my fps will insta-drop to 70 from 200 in a blink of an eye, so i started monitoring different temperatures and i noticed my CPU temp drops with exact timing to the FPS drops, while in-game it'll be at 33C then as soon as the FPS drops, the CPU temp will get as low at 19C and usually 23-25C? could this be an overheating issue even though i idle at 25C out of game and 33-36C in-game? i feel like it's something limiting power to CPU or something so i disabled CE1 in bios, but still it remains, any ideas boys?

edit: the FPS drops last about 5 seconds then when my FPS returns to 200 my CPU temp will also rise gain to the normal ~33

LookItsRain · Sep 21, 2014

I would say the 9800 is the issue, it could be overheating or just being/looking in certain areas makes it lag, that card is old as hell.

Europeenne · Sep 21, 2014

LookItsRain :

i agree it's bad man, will definitely upgrade soon, the 9800 runs at 60C, which i read isn't too bad, but i've read CS:GO is like 90% CPU heavy, and also what's the correlation between my shitty 9800 haha and FPS dropping followed by CPU temp

LookItsRain · Sep 21, 2014

Europeenne :

Graphics card and cpu are dependent on each other, if the gpu cant handle its load and it drops, the cpu no longer has to work as much load and the usage and temps drop. Since your cpu is not even close to running hot, your 9800 is bottlenecking your system severely.

Europeenne · Sep 21, 2014

LookItsRain :

AHHHH okay i understand now, thanks man. here's 1 little catch i tested out in accordance to this theory, so when my FPS drops to 70 my CPU temp drops below 25..... but when i manually set my FPS_MAX to 70 so that my fps stays at a steady 70 anyway, my CPU temp does not drop below 25, it remains at 33C or whatever it was when i was getting 200 FPS, thoughts?

LookItsRain · Sep 21, 2014

Europeenne :

LookItsRain :

AHHHH okay i understand now, thanks man. here's 1 little catch i tested out in accordance to this theory, so when my FPS drops to 70 my CPU temp drops below 25..... but when i manually set my FPS_MAX to 70 so that my fps stays at a steady 70 anyway, my CPU temp does not drop below 25, it remains at 33C or whatever it was when i was getting 200 FPS, thoughts?

One thing i forgot to mention, AMD temps are read backwards. When you set it to 70 fps, your temp is decreasing. The way AMD temps are read is the temp from max temp, so in this case, when set to 70 fps, your CPU has 33C of headroom before shutdown, when at 200, it has 25C before shutdown, so at 200 fps, your cpu is running 8C hotter.

velo3100 · Sep 21, 2014

It is definitely you gpu throttling as this is a very old card. I would get your gpu replaced as soon as possible as this is putting pressure on your cpu.

Europeenne · Sep 21, 2014

LookItsRain :

Europeenne :

One thing i forgot to mention, AMD temps are read backwards. When you set it to 70 fps, your temp is decreasing. The way AMD temps are read is the temp from max temp, so in this case, when set to 70 fps, your CPU has 33C of headroom before shutdown, when at 200, it has 25C before shutdown, so at 200 fps, your cpu is running 8C hotter.

The temp does not change when I manually limit my fps to 70, only when I have it unlimited and its at 200 then it drops to 70 on its own, thoughts? And I never knew that so my CPU is really running at 43C not 25C assuming 68C is shutdown.... wow

Edit: actually that can't be true, atleast for the program I'm using because why would I be closer to shutdown out of game then in game

LookItsRain · Sep 21, 2014

http://www.tomshardware.com/faq/id-2122665/understanding-temperature-amd-cpus-apus.html

Europeenne · Sep 22, 2014

LookItsRain :

i'm reporting the 1st number in the article, not the thermal margin number

iamlegend · Sep 22, 2014

Hey OP, if you can cap your FPS to 70 or even 60 without problem, I suggest that it will be your best option. Having a very high FPS (200) is a garbage if you experience significant frame drops.

Europeenne · Sep 25, 2014

hey guys i just upgraded my graphics card to a Nvidia GTX 650 Ti 2gb, went in game.... and the problem continues? any other ideas? possible setting that is causing CPU temperature to drop?

LookItsRain · Sep 25, 2014

Europeenne :

Update all drivers, update software etc. Remove old drivers.

Europeenne · Sep 26, 2014

LookItsRain :

seemed hopeful at 1st then it eventually happened again -____-, the new GPU increased my max fps/avg fps for sure, but when the drop in CPU temperature happens it still hits my FPS just as hard

Europeenne · Sep 26, 2014

okay i downloaded AMD Overdrive to monitor the CPU, and what i did notice was when the FPS drop occurs, the CPU temperature drops and thermal margin temperature increases (like you said), but at the same time my CPU usage goes up... so does that mean there is some sort of throttling happening? and how can i disable it?

Europeenne · Sep 28, 2014

okay guys looks like i finally found the answer, after disabling all powersaving features like PowerNow, CE1, etc.... the final step was disabling the turbo core/cache for the CPU in bios, so the cores now run at 4.0 ghz rather than the auto-overclock 4.1, but my temperature has gone down 10C almost and the drops/throttling has seemed to have stopped after 1 day of testing

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CPU Temperature and FPS in-game simultaneously drop?

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