What do I need PCIE PSU connectors for? What is a Semi-Modular PSU? Tags: Cooler Master PCI Graphics Cards Computers PCI Express Components Last response: April 16, 2013 3:00 AM in Components Share lurkingshadow April 16, 2013 2:53:19 AM Im looking at one of these three psu for my new computer. SeaSonic M12II 650 SeaSonic S12II 620 Bronze 620W COOLER MASTER GX 650W COOLER MASTER GX 750W One big difference is the two cheaper models come with two PCI-E and the others with four. Other then graphics cards what are these needed for. Also what are the other connectors used for? As well as this I was wondering what "semi modular" means? Finally what PSU would you recommend? My pc parts are (already purchased) Gigabyte GA-970A-UD3 AMD FX-8530 Sapphire HD7850 G.Skill RIPJAWS 2x4GB 1600MHz Cooler Master Centurion 6 Thanks a lot More about : pcie psu connectors semi modular psu dragox April 16, 2013 2:56:57 AM genrally you use 2 pci'e for each gpu if there high power ones. so 4 pci'e connectors are for crossfire/sli configurations. semi modular means that the cpu and motherboard connectors are wired by default, but you can pick what cables to connect for hard drives, gpu's and molex powered devices. i would recomend the cooler master 6 if you intend to crossfire, otherwise any would do. Sakkura a b U Graphics card April 16, 2013 3:00:05 AM Avoid the Cooler Master GX PSUs, they're crap. Can't find your answer ? Ask ! Publish Related resources: ForumSolvedWhat kind of PCI-e does this PSU have? ForumWhat's the pinout for a PSU with BOTH 24 and 20 pin connectors? ForumWhat Type of Connectors are these? Changing PSU to a VS450 ForumWhat type of Connectors are there for PSU's? ForumWhat PSU has 4 x 8 Pin PCI-E's? ForumWhat connectors goes into a hard drive and dvd drive from the PSU? ForumSolvedwhat graphics card to buy, will it fit in my motherboard and do i need to upgrade psu? ForumSolvedWhat PSU/how much wattage do i need? ForumSolvedWhat PSU do I need for this pc build ForumSolvedSapphire R9 290, What PSU do i need? ForumSolvedWhat kind of PSU do I need for my new Motherboard? ForumSolvedWhat PSU do I need? ForumSolvedWhat PSU will I need for this build? ForumSolvedWhat PSU do I need for a Nvidia geforce GTX 560? ForumSolvedWhat wattage PSU would I need for my rig ForumSolvedwhat wattage psu do i need ForumSolvedWhat PSU do I need for my system? ForumSolvedWhat wattage PSU do i need ForumSolvedWhat PSU Would I Need For This Upgrade? ForumSolvedWhat PSU Would I Need For This Upgrade? More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !