Enermax Revolution III S 1000W Power Supply Review: Platinum Efficiency with Thermal Limitations

The Enermax Revolution III S 1000W represents the company's offering in the mainstream-premium segment, positioned between entry-level and flagship units like the Platimax II. This power supply delivers on efficiency and quality expectations but makes notable compromises in thermal management that affect its performance under demanding conditions.

Platform and Specifications

The Revolution III S is built on RSY's platform, with Shenzhen Ruishengyuan Technology handling the manufacturing. RSY, founded in 2014, has established itself as a reliable OEM for mid-to-top-tier power supplies across several established brands.

Key specifications include:

• Total Output: 1000W at 40°C
• 12V Rail: 83.3A (999.6W)
• Efficiency Certification: Platinum (80Plus, Cybenetics, PPLP.Info)
• Dimensions: 140mm (standard ATX length)
• MSRP: $180
• Warranty: 13 years

The power density of this unit is noteworthy for its wattage class, measuring exactly 140mm in length to fit standard ATX cases without compatibility issues.

Design and Build Quality

The external chassis features a lightly textured black finish with white decorative etchings displaying the Enermax logo and series name. The diagonal cutout fan finger guard is integrated into the chassis rather than being a separate component, creating a premium feel. A white version is also available for builders with lighter-themed systems.

The front panel contains only the essential elements: a power switch and AC receptacle. The rear panel houses the modular connectors with a printed white legend alongside company and series branding. This minimalist approach aligns with the environmentally-conscious presentation of the packaging.

Internally, the unit employs a Globe S1202512L 120mm fan with a fluid dynamic bearing (FDB) engine. The FDB design represents a middle ground between the longevity of dual ball bearings and the quietness of sleeve bearings. The fan's maximum rated speed of 1800 RPM is conservative for a 1000W unit and represents the most significant functional departure from the Platimax II, which uses a larger 135mm fan with dual-ball bearings.

Cabling and Connectivity

The Revolution III S features fully modular, all-black cabling throughout. The bundle is minimal, including only mounting screws, an AC power cable, and basic cable ties—notably absent are cable combs, which would have enhanced the aesthetic appeal of the scaled, per-wire shielded cables.

The connector configuration includes:

• 1x 12V-2x6 connector
• 4x 6+2 pin PCIe connectors
• 2x EPS 8-pin connectors
• 9x SATA connectors
• 3x Molex connectors
• 1x ATX 24-pin connector

A critical limitation exists in the PCIe cable architecture: one of the PCIe cables carries two 6+2 connectors and shares the 12V-2x6 port. This design means using all four PCIe connectors simultaneously is impossible if a 12V-2x6 cable is installed. This limitation may affect builders planning multi-GPU systems or those requiring maximum cable flexibility for future upgrades.

Performance Metrics

Cold Test Results (25°C Ambient)

Under cold conditions, the Revolution III S demonstrates excellent efficiency:

• At 115 VAC: 90.5% average efficiency across the nominal load range
• At 230 VAC: 92.7% average efficiency

Both figures exceed the Platinum standard requirements. The efficiency curve peaks around 40% load, which is typical of well-optimized platforms. The fan remains stationary until load crosses approximately 400 Watts, then increases inaudibly at first before becoming more noticeable after 600 Watts.

Voltage regulation is excellent by current standards:

• 12V rail: holds within 1.0% across the load range
• 5V rail: holds within 1.5%
• 3.3V rail: holds within 1.4%

Ripple suppression is more modest:

• 12V rail peaks at 52 mV
• 5V rail peaks at 26 mV
• 3.3V rail peaks at 26 mV

While all figures remain within ATX specification limits, they don't represent class-leading performance at this price point.

Hot Test Results (~45°C Ambient)

The unit's thermal limitations become apparent under elevated ambient temperatures:

• At 115 VAC: average nominal efficiency drops to 87.5%
• At 230 VAC: average nominal efficiency drops to 89.6%

The 3.1% efficiency drop is significant and uncommon in advanced PC power supplies. The fan engages at the same 400W threshold as in cold testing but increases speed much more rapidly. The unit reaches maximum fan speed at approximately 80% load rather than at full output.

Internal temperatures rise faster above the 80% load point as the fan cannot provide additional cooling, though they remain within safe limits. No over-temperature protection events occurred during testing, but the thermal stress is evident.

Protection Circuitry

The protection features include Over Current Protection (OCP), Over Voltage Protection (OVP), Over Power Protection (OPP), and Short Circuit Protection (SCP). Settings are deliberately conservative:

• 3.3V and 5V rails trigger OCP at 140% of rated current
• 12V rail OCP activates at 116%
• OPP under hot conditions triggers at 120% of rated output

These settings demonstrate responsible engineering that protects the unit quickly under fault conditions.

Market Positioning and Value Proposition

At $170, the Revolution III S 1000W is competitively priced for its class. The 13-year warranty stands out as the unit's most compelling feature, representing an extraordinary commitment in a market where 8 to 10 years is considered generous.

The target market for this power supply consists of builders seeking a reliable unit for high-end gaming or workstation systems that will primarily operate at moderate loads. It offers a strong balance of efficiency, build quality, and long-term reliability at a reasonable price point.

However, the thermal limitations make it less suitable for:

• Systems that will sustain operation at full output in warm enclosures
• Builders requiring maximum cable flexibility for demanding multi-GPU configurations

Conclusion

The Enermax Revolution III S 1000W is a technically strong unit that delivers Platinum efficiency with top-tier Japanese capacitors and excellent voltage regulation. The 13-year warranty reflects genuine confidence in the design, while the clean construction from RSY demonstrates solid manufacturing quality.

The primary compromise lies in the thermal management system, where the 120mm fan becomes audible under sustained heavy loads, particularly in warm environments. The unusual PCIe cable design also limits flexibility for users requiring multiple simultaneous connections.

For builders prioritizing efficiency and long-term reliability in moderate-load systems, the Revolution III S represents a compelling option. Those with more demanding thermal requirements or extensive connectivity needs should consider stepping up to the Platimax II or alternative solutions with more robust cooling systems.

The Revolution III S ultimately delivers on its promise of quality without meaningful compromises on electrical performance, though its thermal limitations prevent it from being a truly exceptional unit in the premium segment.