I paired a cheap $125 PSU with a $3,000 RTX 5090 — nothing melted, even when pulling 1044 watts

Nvidia's GeForce RTX 5090 has high power requirements to go with its chart-topping performance. That usually means putting a pricey PSU on your parts list, but sometimes you just need to save some cash. I paired a 5090 with Montech's $125 Century II 1200W PSU to see if I could get away with it.

https://www.tomshardware.com/pc-components/gpus/i-paired-a-cheap-usd125-psu-with-a-usd3-000-rtx-5090-nothing-melted-even-when-pulling-1044-watts

Created 2d | Aug 15, 2025, 10:50:07 AM


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