Corsair CX650M (2025) 650W vs Corsair SF450 (2018) 450W
A side-by-side spec comparison of the Corsair CX650M (2025) 650W and the Corsair SF450 (2018) 450W. We line up every specification and score the ones that matter most in this category — weighted, not a raw count of specs won — to reach an overall verdict so you can decide which power supply is right for your build.
| Specification | ||
|---|---|---|
| Modular | semi | full |
| Wattage | 650W | 450W |
| Efficiency | 80+ | 80+ Platinum |
| Form Factor | ATX | SFX |
Winner: Corsair SF450 (2018) 450W — driven by Efficiency (80+ Platinum), Modular (full)
Corsair CX650M (2025) 650W
2
performance points
Corsair SF450 (2018) 450W
4
performance points
Winner is scored by weighting the specs that matter most in this category (not a raw count of specs won).
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