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FPS Drops with overclock on R9 280X

post #1 of 10
Thread Starter 
So i overclocked my card and ran MSI Kombustor, the thing is after a minute or so, the fps drops alot also does the core clock and i dont know why, i don't believe the reason is the temperature, because it barely goes over 70 degrees.

My card is a Gigabyte R9 280X
Default Clocks: Core: 1100MHz Memory: 1500MHz
Overclocked Clocks: Core: 1140MHz Memory: 1650MHz
Power Limit: +20%
1.300 constant Voltage.

CPU: i7 4770k 4.5GHz overclock.
8GB RAM

Here's a SS of the test, once i started the test:

http://postimg.org/image/ob5lk0p1j/full/

And here's a SS of the test one minute later you can notice the gpu load and the core clocks droping from 1140 to 1030 even less then the default clocks. Also the drop of 50 fps.

http://postimg.org/image/hlz2403pj/full/
post #2 of 10
dont use kombustor to measure your cards, use pretty much anything other than kombustor or any burn in type test.
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LEGION
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I7 6700K ASUS Maximus VIII Impact EVGA GTX TITAN X G.skill 16gb 3200 ddr4 
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post #3 of 10
Thread Starter 
I will test with furmark and see what happens.
post #4 of 10
furmark is basically the same thing as kombustor.
LEGION
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CPUMotherboardGraphicsRAM
I7 6700K ASUS Maximus VIII Impact EVGA GTX TITAN X G.skill 16gb 3200 ddr4 
Hard DriveHard DriveHard DriveCooling
Samsung 840 pro 250gb Samsung 840 evo 250gb Samsung 840 evo 250gb Ice kings magic. 
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WIN 10 Wasabi Mango 42" 4k Corsair k70 EVGA 1000w P2 
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LEGION
(15 items)
 
  
CPUMotherboardGraphicsRAM
I7 6700K ASUS Maximus VIII Impact EVGA GTX TITAN X G.skill 16gb 3200 ddr4 
Hard DriveHard DriveHard DriveCooling
Samsung 840 pro 250gb Samsung 840 evo 250gb Samsung 840 evo 250gb Ice kings magic. 
OSMonitorKeyboardPower
WIN 10 Wasabi Mango 42" 4k Corsair k70 EVGA 1000w P2 
CaseMouseAudio
Caselabs Mercury S3 Razer naga :( sennheiser HD 558 
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post #5 of 10
Thread Starter 
So what are your recommendations, either way i dont think that is a normal thing to happen.
post #6 of 10
Thread Starter 
Pushed a little more the core clock and tested on BF4, the core clock dropped to 1050.
post #7 of 10
Thread Starter 
So far the more stable OC is 1155/1700, at least i can run The Elder Scrolls Online with no freezes/crashes or artifacts.

Edit: All runs fine, but after around 3 hours playing the system crash, down clocking to 1150/1650 and see.

Edit 2: Played fine for a few hours, no system crash this time, just after some gameplay hours alot of artifacts started to show on the screen, made me once more downclock to 1120/1600, which is basically nothing.

Edit 3: Looks like 1120/1600 is the only settings to get it stable, but with 1.3V it should be able to handle more.
Edited by AnonymousPT - 2/8/14 at 10:48am
post #8 of 10
Thread Starter 
bump
post #9 of 10
Hi AnonymousePT,
I have an ASUS R9 280 (not X) and I'm also experiencing the same down scaling in performance when overclocking.
At 1150MHz I get 27 fps and at 1190MHz I get 21 fps.
The core and VRM temps are fine. I also increased the voltage but nothing fixed it. I really have no idea why this is happening.
post #10 of 10
I started overclocking myself with the Sapphire R9 280 Dual X and I'm also seeing my performance drop when I overclock. This is odd.
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