Gpu comparison. which is better?

r9 280x vs.

7970 ghz

gtx 770

which is the overall better card? better performance, better overclocking, and better temps. idc about power usage or price between these products. thanks for all of your help

Performance: 280x should be 1-3 fps faster than the 7970

Temps: depends on the manufacturer; asus, sapphire, msi have great cooling solutions

Overclocking: all of these cards overclock well given the conditions

Price:  the 280x