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PSU for a GTX 670

I've been saving up to get this card, and am close to purchasing it. But I'm new to building computers, and know nothing about PSUs. I found an old computer in my garage and am setting up to turn it into a gaming rig. I have a 500w PSU, and that was the requirement for the 670 and i thought i was in the clear. but I've been reading around and now I'm not so sure if my PSU even has the cables for a high end GPU. The rig currently has an Intel Core 2 Quad Q9550 and 4 gigs of ram. I have 4 drives and an optical drive. Im running windows through just one of the drives so im willing to pull some out if that helps. I'll also take out the sound card if need be. I solely want to upgrade the GPU, and would prefer avoiding buying a new PSU. Just some questions I have, What happens if the PSU cant meet the power reqs? Will it damage my components? Can a PSU you supply too much power?

Info on Current PSU:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=1273332&CatId=1079

What are the chances of that PSU being able to support a GTX 670? If i do have to buy a PSU my future upgrades will include upto 16 gigs of ram, 2 x 2tb hard drives, i5 (some ivy bridge) or i7 3770k. So what PSU would you recommend, i'd prefer something cheap but relaible, if thats possible...
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  1. I'd say the PSU is more likely to be able to support that card than not. But it's only a little better than a 50/50 proposition, and that's an expensive video card to roll the dice on.

    A PSU can damage components. (When defective/overloaded)

    You would also need a molex to PCIe adapter for your second power connection on your video card. (Your PSU only seems to have one PCIe and your card needs two)
  2. Z1NONLY said:
    I'd say the PSU is more likely to be able to support that card than not. But it's only a little better than a 50/50 proposition, and that's an expensive video card to roll the dice on.

    A PSU can damage components. (When defective/overloaded)

    You would also need a molex to PCIe adapter for your second power connection on your video card. (Your PSU only seems to have one PCIe and your card needs two)


    I heard that if it doesnt have enough power the computer just shuts down? does it really damage components? Stupid question but if the card did get damaged would i be able to return it?
  3. ventay said:
    I heard that if it doesnt have enough power the computer just shuts down? does it really damage components? Stupid question but if the card did get damaged would i be able to return it?


    A good PSU has protection circuitry that *tries* to protect your equipment with varying degrees of success.

    If your card gets damaged, you probably CAN return it because you are using a PSU that claims to meet the minimum requirements they laid out. (That and they don't know what PSU you used anyway)
  4. Z1NONLY said:
    A good PSU has protection circuitry that *tries* to protect your equipment with varying degrees of success.

    If your card gets damaged, you probably CAN return it because you are using a PSU that claims to meet the minimum requirements they laid out. (That and they don't know what PSU you used anyway)


    Thanks that was really helpful, is there anyway to check if your PSU has protection circuitry?
  5. I would swap out your PSU ASAP if you're planning to throw a GTX670 in your rig. Your PSU is highly insufficient; what matters is not the wattage of the PSU, rather the amps on your +12 Rail(s).

    Your +12v rail only has 28 amps, which roughly equals 336 watts (12*28=336).

    Your first priority should be the PSU, not the GPU IMO.
  6. mocchan said:
    I would swap out your PSU ASAP if you're planning to throw a GTX670 in your rig. Your PSU is highly insufficient; what matters is not the wattage of the PSU, rather the amps on your +12 Rail(s).

    Your +12v rail only has 28 amps, which roughly equals 336 watts (12*28=336).

    Your first priority should be the PSU, not the GPU IMO.


    What GPU would you recommend? Is this a good one, its fairly cheap, i dont know if the brand name is good though...

    http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=419877&CatId=2533

    And what are rails?
  7. ventay said:
    What GPU would you recommend? Is this a good one, its fairly cheap, i dont know if the brand name is good though...

    http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=419877&CatId=2533

    Don't get ThermalTake PSU's, they have a very bad rep unless it's something from their ToughPower line.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151106
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088

    Any of those will do, they're all very high quality and all but the Corsair unit is built by Seasonic if I remember correctly.

    **EDIT**

    -Added Wiki link to PSU rails.

    http://en.wikipedia.org/wiki/Power_supply_unit_(computer)
  8. ventay said:
    Thanks that was really helpful, is there anyway to check if your PSU has protection circuitry?

    Any modern PSU will have some type of OCP, OVP, UCP, UVP, etc, you name it, it has it.
  9. mocchan said:
    Don't get ThermalTake PSU's, they have a very bad rep unless it's something from their ToughPower line.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151106
    http://www.newegg.com/Product/Product.aspx?Item=N82E16817151088

    Any of those will do, they're all very high quality and all but the Corsair unit is built by Seasonic.

    **EDIT**

    -Added Wiki link to PSU rails.

    http://en.wikipedia.org/wiki/Power_supply_unit_(computer)


    awesome thats sitting right in my budget... Will this cover me for future upgrades of MoBo and CPU? I currently have a intel core 2 quad Q9550 @ 2.83 and want to upgrade to an ivy bridge i5 or i7, and replace my asus p5qc.
  10. This is probably the cheapest PSU I would run for that card ($40 after rebate ATM):

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027
  11. ventay said:
    awesome thats sitting right in my budget... Will this cover me for future upgrades of MoBo and CPU? I currently have a intel core 2 quad Q9550 @ 2.83 and want to upgrade to an ivy bridge i5 or i7, and replace my asus p5qc.


    If those are in your budget, then any of them will work for those upgrades.

    If you intend to add a second 670 down the road, go for a PSU that comes with 4 PCIe connectors to begin with.

    My Corsair TX750 has 4 PCIe connectors. $85 after rebate:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021
  12. ventay said:
    awesome thats sitting right in my budget... Will this cover me for future upgrades of MoBo and CPU? I currently have a intel core 2 quad Q9550 @ 2.83 and want to upgrade to an ivy bridge i5 or i7, and replace my asus p5qc.


    Yes, definitely. The 650w PSU's I have listed above will be able to power any single-GPU card on the market at the moment and most likely be able to power any Single-GPU card to come in the future. Basically, you could upgrade anything in your rig and any of those PSU's will be able to handle it without breaking a sweat.

    -coughs- Though, if I may... you should consider the Seasonic X PSU I listed more than any of the other ones :lol: it's 80+ GOLD certified and it's fully modular. With the current discount of $20, the price of the PSU is $109.99...one heck of a deal!
  13. Z1NONLY said:
    This is probably the cheapest PSU I would run for that card ($40 after rebate ATM):

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027

    Great recommendation, OP may also want to consider the CX600 PSU if he wants to save a few extra $$$.
  14. The PSU you link to is sufficient for either of the systems that you mention with a GTX670.

    It's on the low recommended end but it is sufficient. It will run noisier than a similar 750W PSU though. Fan noise stays fairly level until at 50% load then ramps up.
  15. Z1NONLY said:
    If those are in your budget, then any of them will work for those upgrades.

    If you intend to add a second 670 down the road, go for a PSU that comes with 4 PCIe connectors to begin with.

    My Corsair TX750 has 4 PCIe connectors. $85 after rebate:

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021


    Yeah i was actually considering SLI and that seems like a reasonable price, I think im going to get this. And since im throwing down $450 for card i dont really wanna risk anything. But Is it possible to have too much power, i mean until i get a 2nd card i dont think i really need 750w.
  16. ventay said:
    Yeah i was actually considering SLI and that seems like a reasonable price, I think im going to get this. And since im throwing down $450 for card i dont really wanna risk anything. But Is it possible to have too much power, i mean until i get a 2nd card i dont think i really need 750w.

    If you're going to purchase a second card in the future for sure, then get a 750w now. If you're still iffy about getting a second card, then I would think over purchasing any components until you figure out for sure what you want to do.

    Also, no, there is no such thing as too much power. Your PSU will only use as much power as your rig needs :) Efficiency of the PSU, however, is a whole different story.
  17. ventay said:
    Yeah i was actually considering SLI and that seems like a reasonable price, I think im going to get this. And since im throwing down $450 for card i dont really wanna risk anything. But Is it possible to have too much power, i mean until i get a 2nd card i dont think i really need 750w.


    The PSU will only provide the power that's drawn by the components connected to it. (and a little power for its own operation of course)

    You could connect a 45w CPU to a good 1000w PSU and have no issues at all.
  18. Awesome thanks everyone. I can't really pick a best answer, good ideas came from everyone thanks. Im going to get the

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817139021&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-_-na-_-na-_-na&AID=10446076&PID=4176827&SID=wvaoez8f6ty1
  19. Great choice :) have fun with your rig!
  20. Best answer
    Enjoy.
  21. Best answer selected by ventay.
  22. mocchan said:
    Great choice :) have fun with your rig!

    =]
  23. just found an antec ea500W in the garage, will this be able to run a GTX 670 till i get the corsair tx750? Or should i just buy the gpu and new psu together?

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007
  24. I would recommend buying the new GPU and PSU together, however, this PSU should be able to run the 670 without any problems :)

    I'm surprised you've been using an Ultra PSU when you had this all along LOL
  25. lmao... yeah i was planning on selling this older computer and then i realized i might be able to switch psus XD. THing is though im anxious to get on bf3 and id have to make another +$100 before i could get the psu so this is faster for me. Playing bf3 on 640x480 on a 9400gt is not great.
  26. ventay said:
    just found an antec ea500W in the garage, will this be able to run a GTX 670 till i get the corsair tx750? Or should i just buy the gpu and new psu together?

    http://www.newegg.com/Product/Product.aspx?Item=N82E16817371007


    Good brand. (Not familiar with that particular unit though.)
  27. cant wait for the jump from 9400gt to 670
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