@Vellinious, your run is good is 10FPS gain for 220mhz higher memory and not 6FPS for 100mhz, or my to is not valid when I compare with this
delevic`s 3DMark - Fire Strike score: 14522 marks with a Radeon R9 290
I have better graphics score in both tests at lower clocks 1315/1620 vs 1330/1770