3900 with 35% tdp, the other card is doing 4300 with a higher tdp. It's probobly a trottle problem. The test rig isn't tuned maxium, its just a pool test to see if the speed in the window is verified on the pool. Phi sp-mod #4 has been released to a handfull of miners, and they can verify the speed on the pool, but probobly they won't..