PSU cable extension query.

[Digital X]

Going with a new Micro ATX Case, and throwing in some extensions. I have seen

"8 Pin EPS" and "8 Pin EPS12V" on the Bitfenix Alchemy line. I'm using a Super Flower Leadex Gold 650w. Does it matter which cable I chose?

Motherboard is an Asrock Pro3 B75M if that helps.

 

[Digital X]

Yeah I did wonder that, I think I have it sussed, one splits, the other doesn't.