coolermaster 400

Hello everyone. I wanna buy standard versions of GTX560 or GTX660 depending on my budget. My PSU Specs are https://www.cnet.com/products/cooler-master-elite-power-rs-400-psar-j3-power-supply-400-watt-series/ , and it comes with a single 1x6 PCIe connector. Running a GTX560 adapting one more...