- Certified 80 PLUS Gold efficiency reaching 91.80% at 50% load with tight 0.9892 full-load power factor regulation
- Full ATX 3.1 and PCIe 5.1 compliance engineered to handle demanding graphics card power excursions
- Native 12V-2x6 16-pin connector features a Classic Green dual-color indicator to ensure proper terminal seating
- Short 5.51 in (140 mm) casing depth provides broad compatibility across standard and compact ATX cases
- Non-modular captive cabling creates substantial bundle clutter and requires dedicated routing space behind the tray
- Employs a standard 120 mm cooling fan that produces audible hum under sustained heavy workloads
- Five-year warranty coverage trails the ten-year standard typical of modular 1000W competitors
Overview
Squeezing a full kilowatt of continuous delivery into a compact 5.51-inch (140 mm) casing depth, ASRock’s PRO-1000G targets power-hungry desktop builds where interior clearance is at a premium. Built around the updated ATX 3.1 and PCIe 5.1 standards, the unit provides native high-draw graphics card support through a dedicated 12V-2×6 connector equipped with a bright green visual seating indicator. This dual-color cue allows builders to confirm proper terminal engagement at a glance, minimizing the hazard of partial contact under sustained loads. However, because the flat black wiring harness is entirely captive and non-modular, cable management demands deliberate planning and sufficient clearance behind the motherboard tray.
On the electrical side, the platform delivers dependable high-efficiency power conversion. Certified under the 80 PLUS Gold benchmark, it achieves 91.80% efficiency at half load and sustains an 87.39% average efficiency across its operational range. Power factor correction remains tightly regulated, scaling from 0.9647 at 50% load to 0.9892 at full 1000W output, with current total harmonic distortion staying between 6.24% and 8.02%. A single +12V rail supplies up to 74.5A, ensuring ample overhead for rapid transient spikes generated by modern performance graphics cards without triggering false-positive power trips.
Thermal dissipation relies on an integrated 120 mm fan drawing air across internal heat sinks and exhausting through the rear honeycomb ventilation. While the unit maintains a lean 4.29 W idle draw, heavy-load bench testing reveals audible fan acoustics and minor electrical hum compared to larger platforms equipped with fluid dynamic bearing assemblies. Circuit protection is comprehensive, integrating over-current, over-voltage, under-voltage, short-circuit, over-temperature, and over-power safeguards. Backed by a five-year warranty, the platform offers capable core electrical delivery while accepting practical trade-offs in modularity and acoustic refinement.
Technical Specifications
| Brand | ASRock |
| Model | PRO-1000G 1000W |
| Continuous Power | 1000 W |
| Form Factor | ATX |
| ATX Specification | ATX 3.1 |
| PCIe Specification | PCIe 5.1 |
| Efficiency Certification | 80 PLUS Gold |
| Typical Efficiency (50% Load) | 91.80% |
| Average Efficiency | 87.39% |
| Dimensions | 5.51 x 5.91 x 3.39 in (140 x 150 x 86 mm) |
| Cooling Fan Size | 4.72 in (120 mm) |
| Modularity | Non-Modular |
| Cable Style | Flat black captive harness |
| 12V 2x6 Connector Feature | Dual Color Design with Classic Green visual seating indicator |
| Main +12V Rail Output | 74.5A |
| Minor Rails (+5V / +3.3V) | 10.78A / 10.78A |
| AC Input Rating | 100-240 VAC, 12-6A, 50-60 Hz |
| Full Load Power Factor | 0.9892 |
| Full Load ITHD | 6.24% |
| Idle Power Consumption | 4.29 W |
| Peak Load Power Draw | 1109.51 W |
| Hardware Protections | OCP, OVP, UVP, SCP, OTP, OPP |
| Connector Complement | 1x ATX 24-pin, 2x EPS 8-pin (4+4), 1x 12V-2x6 16-pin, 4x PCIe 6+2-pin, 6x SATA, 2x Molex 4-pin |
| Warranty Period | 5 Years |
Primary Sources & Audited Citations
Recommended Alternatives in Power Supplies (PSUs)
At a Glance
How reliable is the ASRock PRO-1000G 1000W according to Mizex audits?
Ideal for builders seeking an affordable 1000W ATX 3.1 supply for current-generation GPUs, provided your chassis offers sufficient room to route and tuck thick captive cable bundles.
What are the known quirks or drawbacks of the ASRock PRO-1000G 1000W?
Our reliability audit identified the following documented caveats:
- Non-modular captive cabling creates substantial bundle clutter and requires dedicated routing space behind the tray
- Employs a standard 120 mm cooling fan that produces audible hum under sustained heavy workloads
- Five-year warranty coverage trails the ten-year standard typical of modular 1000W competitors
What are the key engineering highlights of the ASRock PRO-1000G 1000W?
The top strengths recorded in our evaluation include:
- Certified 80 PLUS Gold efficiency reaching 91.80% at 50% load with tight 0.9892 full-load power factor regulation
- Full ATX 3.1 and PCIe 5.1 compliance engineered to handle demanding graphics card power excursions
- Native 12V-2x6 16-pin connector features a Classic Green dual-color indicator to ensure proper terminal seating
- Short 5.51 in (140 mm) casing depth provides broad compatibility across standard and compact ATX cases