I had another thread but i cant remember it so i decided to put up new one. So, i just bought my friend i5-4670k with z87k and had a thought of updating gpu at the same time ( still running my old trusty fx-6300 with ga970-ud3p ),but for what i know the motherboard doesnt accept SLI ( i have gtx 960 4gb strix edition ) and i remembered this thread about hypersli or something like that (mod that would allow SLI) and had a thought would it be ok to put 2x gtx960, but the mobo has 1 x PCIe 3.0/2.0 x16 (x16 mode, yellow) ,1 x PCIe 2.0 x16 (x4 mode, dark brown) and im not 100% is it worth it and is the other pcie slot 16x or 4x ???? cause in mobo its 16 with pcie 2.0 and im litle confused about that ? I have understood that 4x wouldnt take more than 25% of the full power and i could get used gtx960 for around 100€ so it would affordable for me if it works. Also i could test the hypersli etc with my friends card before buying another one.