I'm putting together my first PC and the estimated power draw is around 400W. I'm considering the be quiet! Pure Power 12 M 650W and want to know whether it's a good match for these parts:
- CPU: AMD Ryzen 5 7600X
- CPU cooler: ENDORFY Navis F240 ARGB
- Motherboard: GIGABYTE B650 EAGLE AX
- Memory: Corsair Vengeance RGB RS 16GB (2×8GB) DDR5-6000 CL36
- Graphics card: XFX Swift Radeon RX 9060 XT OC Triple Fan 16GB
- Storage: Kingston NV3 1TB PCIe 4.0 NVMe SSD
- Case: ENDORFY Regnum 400 ARGB
I'd also appreciate general feedback on the build, especially whether any components should be changed for better value or longevity.
4 Answers
It may be worth comparing prices on a good 750W unit. If the price difference is small, something like the Corsair RM750e or ASRock Phantom Gaming PG-750G gives you more upgrade room. A 1,050W Montech Century II could also make sense only if it is unusually close in price, but it is unnecessary for this build.
Some recommended alternatives are improvements, but calling the 650W unit a bad choice is overstating it. It is still an appropriate PSU for the current parts. The main reasons to choose 750W would be extra upgrade headroom or a particularly good sale price.
The power supply is fine, but I’d reconsider a few other parts. A 7600X does not need an expensive 240mm liquid cooler; a capable air cooler such as a Thermalright Peerless Assassin-class model should be plenty. Also, 32GB of RAM is a better choice for a new gaming PC, and a higher-quality TLC SSD with DRAM may be preferable to the Kingston NV3 for sustained workloads and long-term consistency.
The 650W Pure Power 12 M is a solid, reputable choice and should run this system comfortably. Your estimated load leaves a reasonable amount of headroom, assuming the estimate is accurate and you are not planning a major future upgrade.

Exactly. A quality 650W unit is already enough here, so the decision mostly comes down to pricing and whether a future graphics-card upgrade is likely.