1. #1

    Will my PSU running my new rig?

    i was just wondering if any1 would be able to help me i have just bought most of the parts below and i wanted to make sure my 750w PSU will run this weekend.

    current setup:
    Window 7 ult 64bit
    CPU = Intel i7 2600k
    CPU Fan = NZXT Havik 140 CPU Cooler
    Mobo = Asrock Z77 Extreme4
    GFX Card = 2x EVGA GTX 680 SC Signature 2048MB in SLI
    RAM = 16GB Mushkin Enhanced Blackline Frostbyte (4x4GB) 2133
    SSD = Intel 520 Series 120GB
    HDD = seagate 1tb
    PSU = corsair Pro HX750w <------------------------------- PSU in question
    Case = Xigmatek Utgard (this case has 3 fans in it already)
    Monitors = 3x liyama E2407hds (i run these at 1920x1080)(5760x1080)

    thanks for the replys

    Intel i7 2600k | NZXT Havik 140 | Asrock Z77 Extreme4 | 3x Liyama E2407HDS(5760x1080) | Intel 520 Series 120GB
    2x EVGA GTX 690 SC Signature 2048MB in SLI | 16GB Mushkin Enhanced Blackline 2133 | CoolMaster HAF X

  2. #2
    Should be absolutely fine. You could run that on a 650W PSU. A single 680 only needs about 200W, so two of them plus a 2600 would need around 500W.
    Intel i5 2500K (4.5 GHz) | Asus Z77 Sabertooth | 8GB Corsair Vengeance LP 1600MHz | Gigabyte Windforcex3 HD 7950 | Crucial M4 128GB | Crucial M550 256GB | Asus Xonar DGX | Samson SR 850 | Zalman ZM-Mic1 | Western Digital Caviar Blue 500GB | Noctua NH-U12P SE2 | Fractal Design Arc Midi | Corsair HX650

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  3. #3
    Yes, 750W is enough.

  4. #4

  5. #5
    Old God Winter Blossom's Avatar
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    If you are getting 2 GTX 680's I would go for higher.

    Cards
    Lights
    Fans
    All your other stuff

    I have an 850 watt in my computer, with a GTX 570 superclocked. I originally had a good quailty Thermaltake 750 watt. I had to get a 850 because some of my fans werent getting enough power and weren't comming on. Popped the 850 in there and everything ran smoothly.
    Last edited by Winter Blossom; 2012-04-24 at 12:41 PM.

  6. #6
    Epic!
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    He'd only need higher if hardcore overclocking is involved. Say 2600K at 4.8GHz or higher and GTX 680s that have been overvolted and average around 1250MHz with GPU Boost.
    "Wrong. Deterrence deflects 100% of Iron Prison (Not tomb) dmg." -Jaydenkor, 2014


  7. #7
    Should be fine, you have a good quality PSU there and the GTX 680's are very power efficient, which tend to use less than even AMD's counterpart - the HD7970.

  8. #8
    ok ty all for the info if something goes wrong i will know what it is

    Intel i7 2600k | NZXT Havik 140 | Asrock Z77 Extreme4 | 3x Liyama E2407HDS(5760x1080) | Intel 520 Series 120GB
    2x EVGA GTX 690 SC Signature 2048MB in SLI | 16GB Mushkin Enhanced Blackline 2133 | CoolMaster HAF X

  9. #9
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    Quote Originally Posted by Celticmoon View Post
    I have an 850 watt in my computer, with a GTX 570 superclocked. I originally had a good quailty Thermaltake 750 watt. I had to get a 850 because some of my fans werent getting enough power and weren't comming on. Popped the 850 in there and everything ran smoothly.
    This sounds incredibly unlikely. Cold cathodes and LEDs require very little power. Fans only need on average 1-2W at 12V. Most fans spin up at 5V, or less than 1W in most cases. If the fans are plugged into motherboard headers they are taking power from the 24-pin ATX connector. If that connector is having trouble supplying power to fans it most certainly wouldn't even turn your PC on to a usable state at all. If the fans were connected to molex connectors, then I my first guess would be those connectors/cables themselves were faulty and not the rest of the PSU.

    Certain Thermaltake PSUs like the Toughpower Grand 750W and the Toughpower XT 775W are in the upper tier, among the better PSUs on the market.

    Your main sources of power are going to be the following

    GTX 680 up to 250W each with a mild OC
    2600K up to 130W with a mild OC
    Mainboard around 40W
    HDD/ODD around 15-20W each during spin-up only.
    SSD around 5W while active
    "Wrong. Deterrence deflects 100% of Iron Prison (Not tomb) dmg." -Jaydenkor, 2014


  10. #10
    Old God Winter Blossom's Avatar
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    Quote Originally Posted by kidsafe View Post
    This sounds incredibly unlikely. Cold cathodes and LEDs require very little power. Fans only need on average 1-2W at 12V. Most fans spin up at 5V, or less than 1W in most cases. If the fans are plugged into motherboard headers they are taking power from the 24-pin ATX connector. If that connector is having trouble supplying power to fans it most certainly wouldn't even turn your PC on to a usable state at all. If the fans were connected to molex connectors, then I my first guess would be those connectors/cables themselves were faulty and not the rest of the PSU.

    Certain Thermaltake PSUs like the Toughpower Grand 750W and the Toughpower XT 775W are in the upper tier, among the better PSUs on the market.

    Your main sources of power are going to be the following

    GTX 680 up to 250W each with a mild OC
    2600K up to 130W with a mild OC
    Mainboard around 40W
    HDD/ODD around 15-20W each during spin-up only.
    SSD around 5W while active
    Sad, but true story. I had the Thermaltake Thoughpower XT 750 watt. No bad wires, nothing was broken. I have the same fans, lights, etc in the computer now, just different PSU and graphics card.

    I had originally just wanted to upgrade my graphics card. When I put the new card in, one of my comps fans wasn't coming on and the other was struggling for power. Turned the comp on and after 5 mins it shut itself off. Had to upgrade to the 850 watt.

    Now I have the new card, new PSU and my computer is running great with no problems.
    Last edited by Winter Blossom; 2012-04-24 at 01:42 PM.

  11. #11
    Or your PSU was in some way faulty and the wattage had nothing to do with it.
    Intel i5 2500K (4.5 GHz) | Asus Z77 Sabertooth | 8GB Corsair Vengeance LP 1600MHz | Gigabyte Windforcex3 HD 7950 | Crucial M4 128GB | Crucial M550 256GB | Asus Xonar DGX | Samson SR 850 | Zalman ZM-Mic1 | Western Digital Caviar Blue 500GB | Noctua NH-U12P SE2 | Fractal Design Arc Midi | Corsair HX650

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  12. #12
    Old God Winter Blossom's Avatar
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    Quote Originally Posted by Butler Log View Post
    Or your PSU was in some way faulty and the wattage had nothing to do with it.
    Nope, it's in my husbands computer. We exchanged his 650 for my older 750. No problems, runs smooth.

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