At high resolutions(1440p and 4k) which configuration is better? A 970 sli or 290x crossfire? I plan on buying 1 970 or 290x and then buy another 1 in the near future(5-6 months). I will choose depending on which one has better multi card config (sli or crossfire). Performance is number1 priority, power consumption 2,silence 3, cooling 4.There price is pretty much the same. I wanna know which configuration performs better at 4k specifically.