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Where does my PCI-E connect into my PSU?

Hello, noob question here. Where do I connect my PCI-E connectors from my Video Card into my PSU?

My Power Supply lists "+12v1" and "+12v2", which one do I put my PCI-E connectors from my GPU?

GPU: Asus Nvidia GTX 770
PSU: Antec HCG 750w modular

Also, my GPU has a 8-pin and 6-pin slot, can I use a single PSU cable for both of them (the cable has two PCI-E connectors)? Or do I need to use 2 separate PSU cables?

Third, my PSU's PCI-E cable has a "C" on the side of one of the connectors, does that matter?

I hope my questions make sense.
4 answers Last reply Best Answer
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  1. Best answer
    Either rail is powerful enough to run your card. Since Antec provided you with a convenient double cable ( 2 X 6/8pin connector ) you may as well use one to keep your cables neater as one is capable of approximately 372 watts. If you ever get a second GPU for SLI, then it is important to choose plugs on the PS that are on the other rail ( +12v2 ).
  2. The CPU is drawing its power from +12V2.

    For the graphics card use +12V1 for better load balancing.
  3. Thanks for the responses!

    @ko888, where can I find that info about the CPU drawing from the +12v2? I tried several google searches but I couldn't find anything like that. Maybe I just didn't know what to look for...
  4. Tommerbob said:
    Thanks for the responses!

    @ko888, where can I find that info about the CPU drawing from the +12v2? I tried several google searches but I couldn't find anything like that. Maybe I just didn't know what to look for...


    From techpowerup.com's review of the Antec High Current Gamer Modular 750 W:

    Quote:
    Antec was kind enough to put descriptions of the rails on the modular panel, but you had better take a look at the table and the text below to figure out the optimal sockets for all the PCIe cables.

    Power Distribution
    12V1 - Peripheral, left 16-pin socket
    12V2 - EPS, ATX, right 16-pin socket

    Even connecting all modular cables to the HCG-750M will leave one of the two 16-pin sockets vacant. You had better connect both PCIe cables to the left 16-pin socket because the 12V2 rail feeds the EPS connector; that is, if you don't want to mix them up, which could trigger the unit's OCP. Taking into consideration the only two +12V rails, we think that power distribution is good, but users should follow the aforementioned advice to avoid any problems.
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