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[Official] AMD R9 290X / 290 Owners Club - Page 1366

post #13651 of 43924
Quote:
Originally Posted by Forceman View Post

Those speed drops are pretty unacceptable though - they really need to dial back Powertune or something.



Adding 10% to the board power limit when i had the stock cooler reduces the clock drops to a minimum, and when it does drop it barely drops by 10-50Mhz for a split second.


Right now I am under watrercooling and at stock clocks w/ +10% board power limit, I pretty much flatline at my set clocks unless my GPU load drops significantly.
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post #13652 of 43924
R9 290 Crossfire Test stock voltage oc to 1190mhz.
post #13653 of 43924
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Quote:
Originally Posted by kelvinchen View Post

R9 290 Crossfire Test stock voltage oc to 1190mhz.

Warning: Spoiler! (Click to show)
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Congrats - added thumbsupsmiley.png
     
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post #13654 of 43924
Quote:
Originally Posted by Sazz View Post

Adding 10% to the board power limit when i had the stock cooler reduces the clock drops to a minimum, and when it does drop it barely drops by 10-50Mhz for a split second.


Right now I am under watrercooling and at stock clocks w/ +10% board power limit, I pretty much flatline at my set clocks unless my GPU load drops significantly.

Yeah, mine is flatline also, but you would expect a little more consistency out of the box. The power use is even more chaotic. Pretty big swings in the space of a few milliseconds.

post #13655 of 43924
Quote:
Originally Posted by Forceman View Post

Yeah, mine is flatline also, but you would expect a little more consistency out of the box. The power use is even more chaotic. Pretty big swings in the space of a few milliseconds.



Well remember that it is designed to adapt w/ the load within mili seconds so seeing rapid changes on power draw at this timeframe is expected. in fact on previous video cards even if the video card is not under 100% load the clocks would remain at its set max clocks.


While on 290/290X, if the GPU load is under a certain % (can't figure out what exactly is the number) and/maybe if the GPU doesn't require to run at 100% power for the said task, the clocks would just automatically adjust depending on the load, I noticed this playing NFS World when I had V-Sync on at 60Fps, my clocks would only go at 800ish Mhz probably because it doesn't need all the power to run at 60Fps, but once I turn that V-sync off my clocks would go at its designated clock that I set coz its free to render as much frames as it can.
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post #13656 of 43924
Quote:
Originally Posted by Sazz View Post

Well remember that it is designed to adapt w/ the load within mili seconds so seeing rapid changes on power draw at this timeframe is expected. in fact on previous video cards even if the video card is not under 100% load the clocks would remain at its set max clocks.


While on 290/290X, if the GPU load is under a certain % (can't figure out what exactly is the number) and/maybe if the GPU doesn't require to run at 100% power for the said task, the clocks would just automatically adjust depending on the load, I noticed this playing NFS World when I had V-Sync on at 60Fps, my clocks would only go at 800ish Mhz probably because it doesn't need all the power to run at 60Fps, but once I turn that V-sync off my clocks would go at its designated clock that I set coz its free to render as much frames as it can.

I understand the concept, I'm just surprised to see such big swings in such a small period of time. I'd like to see a millisecond output like that from an Nvidia card (or a CPU). You'd think they'd try to smooth it out a little, a 200W power draw swing in a millisecond, and a dozen of them in 100 ms, seems like a lot (but maybe that's just my analog thinking).
post #13657 of 43924
Quote:
Originally Posted by Forceman View Post

I understand the concept, I'm just surprised to see such big swings in such a small period of time. I'd like to see a millisecond output like that from an Nvidia card (or a CPU). You'd think they'd try to smooth it out a little, a 200W power draw swing in a millisecond, and a dozen of them in 100 ms, seems like a lot (but maybe that's just my analog thinking).


Yeah, when you think about it and look back they did mention this kind of behavior on this card when they launched it, it was meant to be like that so that the power is there when is needed and goes on low power when its not, I wonder if using "Force constant Voltage" would down right make it flat line on the voltage as well.
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post #13658 of 43924
Those kind of power swings may also explain why there is so much Vdroop, I'd imagine overshooting would be a problem with that kind of sudden drop in power draw.
post #13659 of 43924
Crammed in the 2nd card now biggrin.gif http://piclair.com/ago8h . Did a 3dmark at stock http://piclair.com/qzfzn dont know if that's a good score, got around 11k before but that was with 1100/1500 oc on the card

Also seem to get less fps in bf4, might be due to the psu being to weak
Edited by Widde - 1/10/14 at 2:06am
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post #13660 of 43924
Quote:
Originally Posted by Widde View Post

Crammed in the 2nd card now biggrin.gif http://piclair.com/ago8h . Did a 3dmark at stock http://piclair.com/qzfzn dont know if that's a good score, got around 11k before but that was with 1100/1500 oc on the card

Also seem to get less fps in bf4, might be due to the psu being to weak



Or the game itself, I do remember reading about the new patch that BF4 had. That patch made multi-GPU configuration get less performance instead of more... yeah, they are screwing up BF4 big time.
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