Two 12v rail GTX670 Tags: Power Supplies Support Components Last response: November 26, 2012 8:13 AM in Components Share arundar November 25, 2012 8:55:45 PM Can anyone tell me if I have a Seasonic M12II-520 W ....with two 12v rails and 20A on each....would it support the GTX670? Or do i need a single rail with 40A+ More about : 12v rail gtx670 Z1NONLY a b ) Power supply November 25, 2012 10:20:08 PM The PCI-E connectors need about 15 amps for themselves. If they are on a single rail together then that will leave very little current for them to "share" with other devices. It *might* actually work, but it's not something I would try with valuable equipment. arundar November 25, 2012 11:22:57 PM But there are 2 rails...so I could use one for GPU and the rest for cpu,mobo? Related resources Which two are +12V rail? - Forum One 12V rail vs two (or three)? | Antec 300 vs Cooler Master HAF 912? - Forum +12v Rail showing 8v on two PSUs - Forum Two 12V rail - Forum Is quad 12v rail better thena two 12 v rails? - Forum Can't find your answer ? Ask ! Get the answer Z1NONLY a b ) Power supply November 26, 2012 12:45:24 AM The CPU, MB and other devices will be used by whatever rail they are connected to internally. You don't get to pick what connectors are on what rails. Those decisions were made for you at the factory. Without knowing exactly which connectors are on which rails, you are just rolling the dice. arundar November 26, 2012 8:13:48 AM Just found out it seems this PSU has a single rail...lol..... http://www.hardwaresecrets.com/article/Seasonic-S12II-B... Can't find your answer ? Ask ! Publish Related resources Psu two 12v rails what gpu can it handle? Forum How to power a GPU with this PSU and two 12v rails? Forum Would a gtx 560 ti work with 32A across two 12V rails? Forum I have two 12V rails, but which cables are they? Forum SolvedIs the "42A on a 12V rail" requirement for GTX770 from NVIDIA or elsewhere? Forum SolvedPower draw on the 12v rail of some components Forum SolvedHow to test the voltage on the 12v rail of a powersupply ? Forum SolvedDoes this mean 36 Amps On The 12V Rail? Forum SolvedWill a R9 280X run on my Power Supply? 750W 4x +12V 20A Rail's Forum SolvedPSU 12V rail spiked to 20V Forum SolvedCorsair CX750 or EVGA SuperNOVA 750 B1 for Radeon 7950 CF? (plus 12v rail questions) Forum SolvedPSU 11.38V on 12V Rail causing freezes? Forum SolvedIs single 12v 55amp rail a good choice? Forum SolvedAI suite saying 12V+ rail at 0V Forum SolvedEVGA 770 SC needs 42 amps? on 12v Rail? Forum More resources Read discussions in other Components categories Power supplies Sound cards NICs Akasa Antec Cooler Master Cougar DeepCool Enermax !