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Thread: Is 450w PSU enough for GTX 560Ti?

  1. #17
    Anthropomorphic Personification shaithis's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    A decent 600w is going to be £50 minimum and for a 750w your looking at £60-70 minimum.

    Buying a high wattage, low grade PSU is like playing Russian roulette with your PC components.
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  2. #18
    HEXUS.social member Agent's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by MrMyles View Post
    I wouldn't recommend it myself, you'll likely be putting the PSU under constant strain - increasing noise levels and thermals, as well as shortening the lifespan of the product.
    You're not going to strain a properly rated PSU of with that. Most units have their efficiency curve at somewhere between 70 to 90% load.

    You only have to worry about 'straining' it if it's a cheap unit, at which point the rated wattage is the least of your worries.
    Quote Originally Posted by Saracen View Post
    And by trying to force me to like small pants, they've alienated me.

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    Banhammer in peace PeterB kalniel's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by Agent View Post
    You're not going to strain a properly rated PSU of with that. Most units have their efficiency curve at somewhere between 70 to 90% load.

    You only have to worry about 'straining' it if it's a cheap unit, at which point the rated wattage is the least of your worries.
    Quite. High wattage PSU under low load could be inefficient, therefore generate more heat and reduced lifespan than a correctly specified PSU operating in the optimal range. Some very odd replies in this thread.

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    HEXUS.social member Agent's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by tasman26 View Post
    450 is just ok , but in your place would spend £40 for new one 600 or 750 ( in future can go sli or crossfire)
    Could you link a decent 600/750W PSU for £40 please?
    Quote Originally Posted by Saracen View Post
    And by trying to force me to like small pants, they've alienated me.

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  6. #21
    Not a good person scaryjim's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by kalniel View Post
    Some very odd replies in this thread.
    Probably because PSUs are one of the worst-understood components of a computer build. I reckon most people get 600W cheapo PSU jobbies, but then rarely draw more than 150W off them so asume that they're great PSUs because they never have any problem with them (like me and my old QTec 550W ). Of course, if you're drawing < 200W off a cheap PSU, then it doesn't matter if it's really a 250W design with a stupidly high badge because you're still running it in spec

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    HEXUS.social member Agent's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    The fun really starts when they go pop though and they learn about the horrors of a cheap unit, even when they have been run within spec!
    Quote Originally Posted by Saracen View Post
    And by trying to force me to like small pants, they've alienated me.

  8. #23
    Moosing about! CAT-THE-FIFTH's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    What GTX560TI model is being used??

    One of the highly overclocked GTX560TI models consume quite a bit of power at load and can easily exceed that of a GTX470 or GTX570.

  9. #24
    Not a good person scaryjim's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by Agent View Post
    The fun really starts when they go pop though and they learn about the horrors of a cheap unit, even when they have been run within spec!
    I had one do that a few years ago - just randomly popped after a couple of years of apparently trouble-free usage. Bought a replacement, installed it, and everything happily hummed back into life, with no apparent damage, and that computer is still in use today. I'm pretty sure some benevolent higher power considers me substantially in their debt for that one

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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by Agent View Post
    You're not going to strain a properly rated PSU of with that. Most units have their efficiency curve at somewhere between 70 to 90% load.

    You only have to worry about 'straining' it if it's a cheap unit, at which point the rated wattage is the least of your worries.
    If you say so... I'd still rather have a degree of overhead for further upgrades down the line.

    Plus, 500w minimum is specified on the nVidia website

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    Re: Is 450w PSU enough for GTX 560Ti?

    Just wondering if 650w is enough for 1gb xfx hd 6870 black edition?

  12. #27
    RIP Peterb ik9000's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by Agent View Post
    The fun really starts when they go pop though and they learn about the horrors of a cheap unit, even when they have been run within spec!
    and they do literally go pop. Or even *bang* complete with its own smoke and pyrotechnic display.

  13. #28
    RIP Peterb ik9000's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    Quote Originally Posted by aymanal_i View Post
    Just wondering if 650w is enough for 1gb xfx hd 6870 black edition?
    yes. See the website agent gave above http://www.extreme.outervision.com/p...ulatorlite.jsp

    make that probably. It depends what else you're running it with obviously, but assuming a normal system spec I imagine it would be enough.

  14. #29
    Senior Member Pob255's Avatar
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    Re: Is 450w PSU enough for GTX 560Ti?

    It also depends on the PSU, if it's a cheap and nasty 650w PSU then no.

    The big danger in cheap psu's is not when they go pop, but just before they cannot cope (which will often happen just before going pop.
    Many will happily throw out wild voltages and fluctuations before they die and that's what will take out components.

    If a good psu cannot cope, what you should get is that every thing will be ok until your system goes under heavy combined load (cpu+gpu load) where is should then just suddenly shutdown or reboot.

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