Here we present the average clock speed for each graphics card while running the 3DMark Fire Strike Ultra stress test 20 times. We use GPU-Z to record the GPU core frequency during the Fire Strike Ultra runs. We calculate the average core frequency during the entire 20-run.
Strap a decent cooler on your 5700 XT and you can expect to see higher clock speeds. Both Sapphire and PowerColor have achieved very good results with their custom coolers in Performance/OC mode. It is interesting to note that Sapphire can still beat the reference design in Silent mode.