Some questions about overclocking

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Phaanty

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Jan 3, 2014
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Hello i want to overlock my xfx radeon 7850 1gb core edition. I'm using msi afterburner. just changed Core clock from 860 to 1050 and memory clock from 1200 to 1300 i tested it in GTA 5 after overclocking i got + 20 fps and gpu temperature is normal, about 70-72
so i have questions. there is also a power limit function in afterburner. should i change it to +20 or -20? and how to understand if my gpu working good its all about temperature? and one more question whats the Playble temperature for my GPU? i dont wanna destroy it
 
Solution
MarkW
If you are getting higher than 60 FPS, your video card is producing more frames per second than your monitor can display. All overclocking at that point would do is produce even more frames per second that cannot be displayed.

On the other hand, if you are getting less than 60 FPS, and if you overclock the GPU and memory, and that gets you to 60 FPS, then things may display smoother for you.

Every game is different. You might get 120 FPS in one game, and 20 FPS in the next one. And different locations in the game will also produce different FPS numbers. Most games perform fairly well in the 30 to 60 range. Anything lower, and you can start seeing stutter or jerky movements. Anything higher, and some frames simply will not be...
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Phaanty

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Jan 3, 2014
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Okay but what if I only change memory and core clock and did not change power limit at all? as i said i played GTA 5 like 20 min and gpu temperature was 70C its good. so if i leave it like this, will it harm my gpu?
 
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MarkW

MarkW

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Dec 7, 2009
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If you are getting higher than 60 FPS, your video card is producing more frames per second than your monitor can display. All overclocking at that point would do is produce even more frames per second that cannot be displayed.

On the other hand, if you are getting less than 60 FPS, and if you overclock the GPU and memory, and that gets you to 60 FPS, then things may display smoother for you.

Every game is different. You might get 120 FPS in one game, and 20 FPS in the next one. And different locations in the game will also produce different FPS numbers. Most games perform fairly well in the 30 to 60 range. Anything lower, and you can start seeing stutter or jerky movements. Anything higher, and some frames simply will not be displayed, but you will get some FPS number that might make you feel all warm and fuzzy.

And to answer your question, 70c is ok. If you get above 80c, I would start worrying a bit, and over 85c I would shut down whatever 3D programs you have running, and make changes to lower the workload. at 95c (205 F) silicon can start melting. It might not happen immediately at that temperature, but I would not want to take any chances. If that happens, well... we generally call those cards either a "brick" or a "paper weight".
 
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