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450W PSU for HD 7790?

Last response: in Graphics & Displays
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March 13, 2014 8:48:32 AM

12V1 21A 12V2 18A 450W CWT PSU. I'm no expert with PSUs and need to know if the 12V rails are enough for the card.

Rest of system:

I7 3770
1 stick 8GB Ram
HD 7770
2TB HDD

Thanks

More about : 450w psu 7790

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a b ) Power supply
a b U Graphics card
March 13, 2014 8:57:41 AM

Yes its fine for a HD 7790 in 450W power supply. I had mine with 430 and no where at above 300W is consumed.

I would rather get this power supply than the CWT. It has 34A on 12V http://www.superbiiz.com/detail.php?name=XFX-450S&c=CJ
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March 13, 2014 2:18:39 PM

Thanks for the solution. What would you say is the best GPU I could get with that PSU, without it being too risky?

May look into that PSU too.
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a b ) Power supply
a b U Graphics card
March 13, 2014 2:41:29 PM

I would say a GTX 770 and you will consume about 350 watts in total. But here is a side note, you don't want to run your power supply 90-100% of its rated wattage 24/7. This is to prolong the life of your power supply. If you want to run a GTX 780 Ti (your cpu is more than capable of), you need a 650W so it will not run at 90%. More info is this video. https://www.youtube.com/watch?v=ajiN9aVOv4A
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March 13, 2014 3:24:13 PM

Okay thanks for the help, may upgrade my PSU soon.
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