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FPS Drops with overclock on R9 280X

595 views 9 replies 4 participants last post by  AgentGoomba 
#1 ·
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/
 
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#7 ·
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.
 
#9 ·
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.
 
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