Considering I recently tested another R9 290 I had an idea of what to expect when it came time to test the performance of the XFX R9 290 DD Edition. What I wasn’t as sure about was how big of a difference the overclocks would make. The Sapphire card had a 200MHz higher overclock on the memory and 20MHz on the GPU clock speed. It isn’t a big difference, but the results were enough to put the Tri-X ahead slightly in all of our synthetic benchmarks. The difference was only slight though. Both cards still performed up near the top of the charts with just the GTX 780 Ti (and dual GPU results) giving better numbers.