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Tri sli 470 gtx power requirement

Debating going tri sli GTX 470s on a z77a-gd65.
Have a 3570k stable @ 4.4 ghz on 1.25 volt.
Would debate ocing the 470s to 750-800hz @ 1.087


Currently have seasonic x-850. Would that be enough to run my rig?


Thanks for the replies!
16 answers Last reply Best Answer
More about power requirement
  1. No i wouldn't.. just keep the 3 470's at stock..
  2. I haven't bought the third 470 yet.

    Would I be able to handle a third on the x-850 with my set up?
  3. Your talking close to 800W when your system is in load. Personally I wouldn't push your PSU to that limit and if you OC your components you will probably be hitting pass 850.

    If it were me I wouldn't.
  4. Metwingie said:
    :lol: look at my post ;)
  5. lol, soz bud. Think I missed that. My bad
  6. Metwingie said:
    lol, soz bud. Think I missed that. My bad
    :lol: no worries.
  7. Metwingie said:
    Your talking close to 800W when your system is in load. Personally I wouldn't push your PSU to that limit and if you OC your components you will probably be hitting pass 850.

    If it were me I wouldn't.


    What would be the consequences of doing so.

    Aka, what are the worst things that could happen?
  8. While I am no expert isn't the Z77 limited to 16 lanes with out a PLX so if you tried to run 3 cards you would be in 8/8/4 best case but more likely in 4/4/4 or 8/4/4
  9. Looked it up your board is (16, 8, 4) I would guess the x4 is stolen from a different chip so x4 wouldn't get you much IMHO
  10. Best answer
    When using an Ivy Bridge Processor the three PCIe 3.0 x16 slots of the MSI Z77A-GD65 have the following possible support options:

    x16/x0/x0
    x8/x8/x0
    x8/x4/x4

    That means that 2-way SLI is the maximum supported. For the graphics card to be included in the SLI set the x16 slot must have a minimum of 8 PCIe lanes and only two of the three x16 slots on that motherboard have at least 8 PCIe lanes or more.
  11. Interesting. Does my motherboard just suck? I thought I did a fair amount of research
  12. therevaj said:
    Interesting. Does my motherboard just suck? I thought I did a fair amount of research

    3-way or 4-way SLI with an Intel Z77 Express chipset motherboard requires that the motherboard also have the PLX PEX8747 bridge chip.

    Examples:

    ASRock Z77 Extreme9
    ASUS MAXIMUS V EXTREME
    ASUS P8Z77-V PREMIUM
    ASUS P8Z77 WS
    ECS Z77H2-AX
    EVGA Z77 FTW
    Gigabyte G1.Sniper 3
    Gigabyte GA-Z77X-UP7
    ...
  13. ko888 said:
    3-way or 4-way SLI with an Intel Z77 Express chipset motherboard requires that the motherboard also have the PLX PEX8747 bridge chip.

    Examples:

    ASRock Z77 Extreme9
    ASUS MAXIMUS V EXTREME
    ASUS P8Z77-V PREMIUM
    ASUS P8Z77 WS
    ECS Z77H2-AX
    EVGA Z77 FTW
    Gigabyte G1.Sniper 3
    Gigabyte GA-Z77X-UP7
    ...


    Wow, so way above what I was considering.

    Thanks for the help!
  14. Best answer selected by therevaj.
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