The and are reliable 400W ATX power supplies frequently used in home, office, and industrial builds where consistent performance is more important than high wattage. Both units are 80 PLUS Bronze certified, meaning they operate with at least 82% efficiency under typical loads.Core Technical Specifications
- Form Factor: Standard ATX12V v2.3 compliant.
- Total Output Power: 400W continuous power output.
- Efficiency: 80 PLUS Bronze certified.
- Power Factor Correction (PFC): Active PFC with a typical power factor of 99%.
- Cooling System:
- Fan: 120mm double ball bearing fan () or 80mm fan (
SS-400ES
/). - Fan Control: Smart & Silent Fan Control (S2FC) which balances cooling performance and noise reduction.
- DC Output Rails:
- +12V: Dual rails (17A each) or a combined rail up to 30A (360W max).
- +3.3V & +5V: 20A each, with a combined max of 130W.
- +5Vsb: 2.5A.
These units are particularly well-regarded by system builders for their "Super Low Noise Fan Control" and clean power delivery with low ripple. Reviewers often recommend them for budget-friendly rigs or as reliable OEM replacements.