Do be careful if mixing and matching between PSUs. Seasonic has used compatible cables on all models from G-Series and up for a few years now. Corsair has a few more or less well-defined families with compatible cables (the original AX models may use Seasonic cables, but don't try this blindly) - the latest two are compatible, but the newer version has additional filter caps in the big cables (ATX, ATX12V, PCI-e).