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R9 290 throttle after +50 mv on AB?

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post #1 of 18 (permalink) Old 02-27-2015, 01:33 PM - Thread Starter
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My R9 290 form gigabyte is watercooled with the xspc waterblock and it starts to throttle after +50mv even with max power limit, the vrm temps are below 85C and the gpu around 72 with 1110 mhz when i tried to push the voltage to max (+100mv)
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post #2 of 18 (permalink) Old 02-27-2015, 01:38 PM
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Depending on the test, this is not unusual.

The +50% power limit is often not enough for the power the card can draw in demanding tests at significant OCs with high voltage.

Also, 72C is pretty high for a water cooled part.

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post #3 of 18 (permalink) Old 02-27-2015, 01:48 PM
 
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You should rather try undervolting first, using ATi Tray Tools, imo. It has its own artifact checker.
VRMs on 290x aren't that solid, imo(depending on the custom pcb model). Despite operating under water cooling, you might have better luck if they are cooler. Warning: Spoiler! (Click to show)
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post #4 of 18 (permalink) Old 02-27-2015, 02:06 PM - Thread Starter
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Quote:
Originally Posted by Blameless View Post

Depending on the test, this is not unusual.

The +50% power limit is often not enough for the power the card can draw in demanding tests at significant OCs with high voltage.

Also, 72C is pretty high for a water cooled part.

Yeah before it was around 50c but i tried re mount the block to low vrm temps the vrm temps got a bit lower and the gpu got hotter i think i did a bad thermal paste application
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Originally Posted by mtcn77 View Post

You should rather try undervolting first, using ATi Tray Tools, imo. It has its own artifact checker.
VRMs on 290x aren't that solid, imo(depending on the custom pcb model). Despite operating under water cooling, you might have better luck if they are cooler. Warning: Spoiler! (Click to show)

for oveclocking we shouldnt overvolt it? O_o
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post #5 of 18 (permalink) Old 02-27-2015, 02:09 PM
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Originally Posted by Nonamedota View Post

Yeah before it was around 50c but i tried re mount the block to low vrm temps the vrm temps got a bit lower and the gpu got hotter i think i did a bad thermal paste application
for oveclocking we shouldnt overvolt it? O_o

Your temps are incredibly high for a block with so little extra voltage. Definitely check the paste job, but I'd also check to see if you used the proper thickness thermal pads and that the block is level/flush with all holes when being mounted. I would also double check there are no air bubbles in the loop and the rest of the loop is functioning as efficiently as you can get it to.

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post #6 of 18 (permalink) Old 02-27-2015, 02:13 PM - Thread Starter
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Originally Posted by rv8000 View Post

Your temps are incredibly high for a block with so little extra voltage. Definitely check the paste job, but I'd also check to see if you used the proper thickness thermal pads and that the block is level/flush with all holes when being mounted. I would also double check there are no air bubbles in the loop and the rest of the loop is functioning as efficiently as you can get it to.

i used the thermal pads that came with the block and the xspc come pre cutted. the cpu temps are normal and the gpu is in the same loop
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post #7 of 18 (permalink) Old 02-27-2015, 02:20 PM - Thread Starter
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Quote:
Originally Posted by rv8000 View Post

Your temps are incredibly high for a block with so little extra voltage. Definitely check the paste job, but I'd also check to see if you used the proper thickness thermal pads and that the block is level/flush with all holes when being mounted. I would also double check there are no air bubbles in the loop and the rest of the loop is functioning as efficiently as you can get it to.

i saw that using thermal paste over the thermal pads can help but i got scared to try it lol because I saw some good comments and some bad about it
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post #8 of 18 (permalink) Old 02-27-2015, 02:25 PM
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You guys did something terribly wrong with cooling. With an CLC, or "RED MOD", on my 290x I get 55C on core and 72C on VRM (+100mv core 50% Power-Limit).


You used thermal paste for the GPU core.... right?
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post #9 of 18 (permalink) Old 02-27-2015, 02:32 PM - Thread Starter
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Originally Posted by boot318 View Post

You guys did something terribly wrong with cooling. With an CLC, or "RED MOD", on my 290x I get 55C on core and 72C on VRM (+100mv core 50% Power-Limit).


You used thermal paste for the GPU core.... right?


yes but im sure it was bad applied
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post #10 of 18 (permalink) Old 02-27-2015, 02:56 PM
 
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for oveclocking we shouldnt overvolt it? O_o
1.5v voltmod @1.3GHz, or not, the voltage transistor delay follows a diminishing return function for which I don't know the right nomenclature(neither if I'm true, lol!).
ATT is fantastic for detection of even the slightest errors and recalibration of overclock frequencies in accordance by swift reduction. As it finds the highest overclock per voltage threshold, the gpu begins operating at "near threshold voltage"; thereby requring the lowest current at the lowest temperature attainable at that frequency by virtue of undervolting, improves the resistance and there's spare electric potential in vrms to drive clocks even higher per vrm configuration limited electric potential on the card, imo.
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Near room temperature, the resistivity of metals typically increases as temperature is increased, while the resistivity of semiconductors typically decreases as temperature is increased
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