sorry if i didnt keep it clear im trying to say how many % of gpu usage will the x4 lane will give the 2th 270x when gaming le

ATI7000

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Feb 3, 2014
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i need to know how much more gaming power will i get with the 2th gpu how much percent gpu power will the 2d card give on full x16 lane only running x4 2.0 and if it will hurt the first 100% gpu usage i read the techpower test i just wanna know how will the 270x will perform ?