Normal
Its not PCIe though. It is a Type 4 pinout that is used for both CPU/EPS12V and PCIe and it can deliver up to 300W each. Hence the 2x8pin Type 4 is already enough for 12VHPWR to deliver 600W. I dont know why people always forget that the exact same port is used for EPS12V which can deliver 300W. A single daisy chained PCIe cable that comes included in Corsair SF750 already delivers 300W anyway.