High CPU and GPU temps

HDgamer

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Dec 29, 2014
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So i just changed the refresh rate from 60 hz to 120hz and now when i play black ops 2 i noticed my temps are getting high. I am playing on High-low settings ( at both times the settings were the same).
When on 60 hz I would get 60 FPS and my temps for the GPU was 35-42 degrees celsius and my CPU was 30-35 degrees celsius.
Now on 120 hz i get 120 FPS and my temps for my GPU is 48-59 degrees celsius and my temps for my CPU is 34-48 degrees celsius, i dont understand why this is happening. I have limited my FPS to the refresh rate.

Even when playing league of legends on max settings, i would get high temps compared to before. 60 hz; CPU: 28-32 degrees celsius GPU: 30-32 degrees celsius. And On 120hz; CPU: 30-32 GPU:32-36 degrees celsius.
Computer Components:
G1 gaming gtx 980ti
intel i7-4790k
Asus VII Maximus hero MOBO
h100i gtx cpu cooler
RM750W PSU
 
Solution
draw.
Make sure your Monitor has a Refresh rate of 144hz or more, otherwise its a waste, stay at 60 FPS 60 HZ, The monitor refresh rate is the maximum fps you will be able to see in a game, and when you double the refresh rate to 120hz, the card and cpu is working TWICE as hard to render the game Twice as fast, 120fps rather then 60fps. I recommend changing to 60 fps/hz and capping the framerate at 60fps, Unless your monitor supports up to 144hz, Then you can try 120fps/120hz but cap your frames at 120, this will use significantly more resources.

So yes, Your temps will be much higher playing at 120hz rather than 60hz because its rendering twice as much information. The average human eye can only recognize 40-80fps. with jet fighter pilots being known to be able to see up to 250 FPS. So unless you are really paying attention its not worth the extra resources just to go to 120hz, unless your monitor supports it and you are okay with the temperature increase, those temps BTW do not look bad, those are good temps for the settings you have chosen.
 


I have a GTX 980ti Gigabyte G1 shouldnt the temps be a bit lower? and the cpu cooler is a liquid cooler.. also I do have 144 hz but i thought it would use less power if i just choose 120 ... What would be the difference if i change it to 144 hz?
 
draw.

Running your monitor(s) at 144 Hz will prevent your primary GPU from ever downclocking into the idle power state (i.e. xxxx MHz core and memory clocks) causing ridiculously high idle temperature and power draw. Edit: We have figured out that with only a single monitor, the cards will downclock. With more than one monitor and at least one set to 144 Hz, they will go to the high idle state. 120 Hz and below will allow the card to be able to idle down on the desktop which leads to normal idle temps and power draw.

so at 144HZ it will be using even more power which is not an issue considering your current cooling is fantastic, your temps are great. but just keep in mind what I stated above
 
Solution
Temps can't get much lower than they already are unless you plan on strapping an AC to the side of your case or liquid nitrogen.

120 to 144 Hz wouldn't make much of a difference. You would see a marginal increase in temps and power usage. Just as an FYI, having a refresh rate over 60 Hz means that your graphics card never downclocks, even on the desktop. This means it will always be running on higher clock, using up more power, and generating more heat.
 


Thank You So Much I really appreciate it. I was worried that my temps are going way too high for the settings i have on black ops 2. Is it okay if i cap it to 80 fps but stay on 120 hz? it will have lower temps then, right? I'm sensitive with my things, i like taking good care of them.
 

Do not run it at 80fps. Try 72, that way you keep screen harmonics, this is such as a 144hz monitor 144/2=72, You want to keep the ratios equal, therfore running at 80fps would actually cause worse gameplay then at 72fps. 72fps would be ideal as it has much less lag input and its a 1:2 ratio for refresh rate.
 


I am not going to run my monitor at 144 hz since its gona give me high temps.. how about i keep my refresh rate at 120 hz and play on 60 fps? Id like to keep my temps low and my experience enjoyable.
 


Sounds good to me, sounds harmonic thats a 1:2 ratio, and for more information on screen harmonics relating to refresh rates take a loook here. Screen Harmonics
 
You do realize that having a 120 Hz monitor capped at 60 fps is the same as having a 60 Hz monitor capped at 60 fps? What's the point of dolling out cash on a gaming monitor if you aren't going to use it?

@bailojustin

Stop using "harmonic", it's not an official term and it's just going to confuse him. Google it, you and him are the only people using the term. I'm guessing you learned it from him. The guy on that article was just too lazy to google something so he came up with his own word. What your looking for is multiples of the refresh rate.

The concepts explained in your link only apply to G-Sync based monitors, by the way. Depending on the scaler (G-Sync vs Free-Sync) used in the monitor and the graphics adapter being used. Typically though, refresh rate only affects video playback smoothness when it's lower than 60 fps, isn't consistent, or you are playing fixed fps content like TV Shows and Movies. If you are playing fixed fps content, then you defiantly want a multiple of your monitor's refresh rate.
 

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