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Old 08-09-19, 09:50 AM
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Zoot Zoot is offline
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Join Date: Jul 2008
Location: Ireland
Posts: 1,547
AMD 3700X & RX 5700 XT on a 450W PSU

TL;DR - A 450W PSU is plenty for a 3700X & RX 5700 XT.

My desktop has a 3700X & a Sapphire 5700 XT Pulse which I'm running off a 450W SFX Corsair PSU. Sapphire actually has a 600W PSU requirement up on their website.

I did some tests on the power draw from the wall just to see where I'm sitting.

The power measurement shown is from the wall, so you would have to factor in the efficiency aswell. Despite being way under the 600W requirement on Sapphire's website. I'm still nowhere near the limit of what the PSU is rated to supply.

Actually given my numbers a good quality 350W PSU might actually work too.

Here are the numbers, might be of interest to some - see below:
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Desktop: AMD Ryzen 7 3700X | X570i Aorus | 32GB Corsair DDR4-3200MHz | RX 5700 XT | Aorus PCIe 4.0 1TB M.2 | Fractal Define Nano S
Home Server: AMD Ryzen 3 2200G | Asus Prime B450M-A | 16GB Crucial DDR4-2400MHz | 39TB | Fractal Design Define R5
HTPC: AMD Athlon 5350 | ASRock AM1H-ITX | 4GB Corsair DDR3-1333MHz | MiniBox M350

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