Screen freezing after overclocking GPU

Meaning_Raptor

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Nov 19, 2014
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I have a Sapphire Radeon R9 290 Tri-X and when I overclocked it with +30mv, 1190 core clock, and 1450 (i think) memory clock, I wouldn't get any artifacts or crashes when I would run uningene valley, but after about 20-30 minutes (or maybe not even that long) my computer would freeze up. I have a 600 watt corsair power supply, so my question is if that the power supply doesn't have enough wattage to overclock with increased mv? I don't think I experienced any freezing when I overclocked without adding mv's so I suspect this is the issue, but I'm not completely sure.
 
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shanetemple14

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Nov 2, 2014
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600w is MORE than enough to power that card even with an overclock that is a world record. I suspect your card is just very poor at overclocking and you have not got a good draw in the silicone lottery. Tone back the overclock or turn it off completely and you will be just fine. No need for a new power supply. By the way...why did you add +30mv on the card, can you tell me your cards stock speeds so I can assess the level of overclock.
 

Meaning_Raptor

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Nov 19, 2014
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stock speeds are 1000 core and 1300 mem.
 

shanetemple14

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Nov 2, 2014
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Ok, take away 30 from the core overclock (make it 1160) and dont add any voltage. The key to a stable overclock is to test, test and test some more. Take away 30 then test for 20 minutes in unigine heaven, unigine valley or unigine superposition.

My routine goes like this:
-Add 20 each time to the core clock, then test, each time it passes a 10 minute stress test, i add another 20
-Once i have reached the point where i get artifacts, i tone the clock down by 15 mhz and then add 50 to the memory
-I add +50 to the memory until i get artifacts
-I then add 5mv to the GPU and test again to see if it is stable
-I keep bumping up the clock until it reaches its full limit.(i generally dont go about 25mv)
 
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Meaning_Raptor

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Nov 19, 2014
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Ok thanks :) I'll see if I can get it stable
 

shanetemple14

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Nov 2, 2014
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Happy to help, its all about testing every change thoroughly, good luck :)

 

Karadjgne

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Reset the OC to stock values. From there move the sliders/numbers up slightly on boost clock, testing each move before adding more. Do this until the gpu becomes unstable, then drop back 1 setting. Do the same for memory. Once both are stable, add a small amount of voltage/power, and try to continue with clock speeds, then memory. Do this until you get no stability at any voltage/power addition, then drop back 1 setting.

You'll find that your numbers are nowhere near max, simply because the software is generic, intended for any gpu model, so it's max settings are above any current gpu level ability.