Neither. In 4 days you will be able to buy the AMD RX 480 with 4GB of memory for $199, or the 8GB version for $229. It runs at GTX 980 or R9 390X speeds, but only needs a single 6 pin PCIe power cable. It runs cool even when gaming, staying near the 60c temp, and only producing 100 watts in heat. In addition, the cards come with much better DX12 support burned into the silicon than the 900 series has.