Results: 3D Mark Fire Strike
The latest benchmark from Futuremark can certainly hammer on the latest video cards. I run the tests at the standard setting so we can set a good baseline for how a card SHOULD perform. AMD and NVIDIA work very hard to tune their products to these benchmarks, so this should be a measure of theoretical performance in a controlled situation.
In this particular benchmark the 285 handles itself quite well. It is significantly faster than the GTX 760 and gets fairly close to the older R9 280X (this particular version is overclocked out of the box). The newer GTX 960 is also right in the same area, but I have not had a chance to test one myself.