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Need Recommendation on Power Supply Wattage for New Build

I'm building a new build with a rtx 3090 and 5900x and am trying to make it all white, but most of the nice white power supplies are 850w. Is that enough for my build or do I need 1000w? I'm doing fully custom water cooling and will be overclocking.

 

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i think there is an asus rog psu that's all white

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2 minutes ago, ki8aras said:

i think there is an asus rog psu that's all white

Yeah but thats only 850w. Do you think that's enough?

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Nvidia recommends a 750W PSU, so 850W should be fine. 1000W is playing safe especially if you are panning to OC and do a custom loop. 

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33 minutes ago, lequsha123 said:

Yeah but thats only 850w. Do you think that's enough?

im pretty sure it would work, i've gotten a 3080 to work reliably on a 550w psu so an 850w for a 3090? easy

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8 hours ago, lequsha123 said:

Yeah but thats only 850w. Do you think that's enough?

I would go with a 1000W. Some users are reporting 780w power spikes with overclocking. Of course, without video evidence, take that with a grain of salt. On another note, PcPartPicker shows a dozen or so white-1000w power supplies, but not one available for purchase. And I'm not sure if those brands are trustable. I would consider going with something that isn't white.

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