My gpu came with 2x cables which were 2x6pin going into 1x 8 pin as the new gpu is a 2x8 pin. In the manual it showed that I could either do that or use 6pin+2 pin. Will this give the gpu the same power it requires. 2x 6pin+2pin instead of 4x 6pin going into supplied cables that end with a 8 pin.