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The curious case of the R9 290X

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Joined
31 Jul 2006
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306
Location
Aylesbury
I recently purchased one of these, and installed it correctly, removing all Nvidia drivers and installing all the catalyst one's. The device was correctly seated, with all the power connectors in place. When I ran some tests I found that it was performing far below what I was getting from my trusty 680GTX. I'm talking a drop from 80-90FPS at Ultra on Grid Autosport with the GTX to between 45-50 with the R9. Similarly with Crysis 3, I was getting 30-40FPS on the GTX and a little less with the R9. The Valley benchmark score was also less than that of the GTX.
Physically it seemed ok, although the fan was more noisy than I had anticipated. I'm almost certain It must be something I've missed, but for the life of me I cannot think what. I'm by no means an expert but I've done several full builds so know my way around a PC. The R9 290X was a little large for my case so I had always, and indeed have returned it to the supplier. But I have not identified what may have caused the issue. Clearly the CPU I run presently will have limited it, but this would also be true of the 680GTX. Can anybody venture any thoughts as to where I may have gone awry. I ask purely for my own knowledge base. Many thanks.
 
To be honest it may well have been the CPU, as the CPU cores in the A10 aren't very strong
However, this is not definite and a drop certainly should not have happened

Did you use DDU to uninstall the drivers?
 
Might have been restricted to 1x PCI-E channel for some reason, might have been running 2D clocks due to an issue with the drivers, or had a bad heatsink connection and been massively overheating/throttling itself....or just faulty!

GPU-Z and Afterburner would have shed a lot of light at the time.
 
Did it have a reference cooler? I found the one on my 290 was awful at anything less than about 85% and led to massive thermal throttling
 
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