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Having problems overclocking an R9 290 with Afterburner (It seems to have no effect)

post #1 of 4
Thread Starter 
I've never encountered this problem whilst overclocking with afterburner before. There seems to be no performance increase from overclocking, however, at a high enough point, the card does become unstable.

My Method:
As I gradually increase the speed of the core, I run Heaven and then Firestrike to make sure it's stable at that round of clock increases. Once I get instability, I tune it back a bit and run the whole 3dMark 2013 suite. I've gotten my 290 stable at 1180 core and 1625 mem.

My Problem:
As I run things like heaven, I take screen clips of the result. In this case, there is no performance increase between stock (947) and overclocked (1180). I thought it may be just the test, so I compared with the 3dMark 2013 suite of tests. There was no difference. I compared with some Battlefield 4 gameplay. Again, no difference. One weird thing that stumps me is that my first step in overclocking this card was from 947MHz to 1100MHz, and there was a difference in Heaven from ~106fps to 116fps. After that, everything went back to stock performance. Here's a screen cap (Click to show)



My Attempted Solutions:
I reinstalled afterburner 3.0 Beta 19. Didn't help. I restarted the computer a bunch. Didn't help.


Has anybody encountered this problem before? I need some overclocking guidance please
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post #2 of 4
do you have to add voltage at 1100?

anyway, at 1180 you may really need to up volts and increase the Power Limit to max. i would even max the PL at any oc, while keeping the voltage as low as possible.

one more thing . . . you need to monitor the temps closely. temps for the core and the vrms. i suggest using programs like GPUZ or Hwinfo64. in GPUZ you will need to use the slider to see the vrm temps and you might need to lower your dpi. keep these temps below 80C (my standard) and to achieve these - you will have to increase fan speed and not leave it in auto.

i can bench my 290 all the way to 1175/1500 without adjusting voltage and just maxing out PL. any higher, the voltage need to be adjusted. at 1180, for example, i increase the voltage to +25. i am using Trixx, btw.

oc the core and the memory separately while testing, then combine the most stable ones.
Edited by rdr09 - 4/19/14 at 8:06am
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Second Intel Rig
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post #3 of 4
Thread Starter 
Thanks for the reply.

Yes, I had the voltage up 100mV for 1180. I didn't check to see how low I could get the voltage at that clock speed though. I overclocked the core first and then once I found the card's max, I overclocked the memory speed.

I wasn't monitoring the vrm temp at all. I'll do that and overclock with TriXX.

Thanks. I'll report back if it helps
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post #4 of 4
Thread Starter 
What the problem turned out to be was severe throttling at any over voltage above 19mV mad.gif

I had 4 cards to bin through and the best one does 1120 without any throttling or artifacting. Lame.

Maybe that will change when it under water.
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