280X still better price/performance
How is that? the 280x isn't twice as fast yet it costs twice as much.
280x MSRP is around 320 - 350. So not 2x as much as 270. Also KH/Watt is better on the 280x than the 270.
MSRP is one thing, current retail prices are another.
280xs are going for 400+ easily, closer to 500.. at least over here in the USA.
Even the 270s are 220-240.