I recently built a PC with an RTX 4070 Super and a Ryzen 7800X 3D, powered by an 850W RX850X power supply. I found a great deal on an RTX 5080, and I'm wondering if my 850W PSU can support this new GPU without issues.
4 Answers
If you have a strong CPU like the 14900K in the mix, then yeah, upgrading would be a good idea. The 5080 pulls a max of about 375W, plus the additional requirements from other components. You could get pretty close to that 850W cap at full load.
In theory, an 850W PSU could handle it, but the official recommendation is for at least 1000W with the 5080. It's just safer to go with the higher wattage if you plan on pushing your system.
The 850W is really on the edge for that setup. While it might work, I strongly suggest considering an upgrade to a 1000W PSU for better stability and future-proofing your build. Doing a little extra research could save you from potential headaches later on.
I've run an RTX 4080 and a Ryzen 7800X 3D with a 650W PSU before without problems. The TDPs for these cards are overestimated for maximum scenarios. Even under load, you might not hit 850W if you manage power efficiently. Still, if you intend to go all out, a larger PSU would give you more headroom.
That's what I was thinking! I do power limit my GPU, so maybe I can manage with the 850W for a little longer.