problems with the r9 290

[catsrock45]

So hears whats happening, i just bought an gigabyte windforce r9 290, i have it oc to core 1071 and left the mem at 1250. i used msi afterburned but when running the kombustor stress test i never saw my core clock go above 930 mhz, what is wrong

 

[ShadyHamster]

Don't use kombustor, use either Unigine Valley or Heaven.