Need help picking a similar card to the r9 270

[Koobs]

Hello, i need help picking a card that has similar price and similar or better performance compared to the r9 270. The reason i need help is because all the 270s are sold out everywhere (the good ones like msi and asus). I have a 450w psu with 1 6 pin connector so id like to avoid two unless i can use the molex to six pin. Any help is appreciated thanks.

 

[whitecat]

GTX 660 is on par with R9 270 and needs one 6 pin conector and 450W PSU. Asus,MSI,Gigabyte
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-660/specifications