ASUS ROG Thor 1200W Platinum III PSU - GaN, ATX 3.1
ASUS ROG
ASUS ROG Thor 1200W Platinum III PSU - GaN, ATX 3.1
The ASUS ROG Thor 1200W Platinum III is a fully modular ATX 3.1 power supply built for enthusiast and high-end gaming PCs that demand stable, efficient power delivery under heavy loads. It combines a GaN MOSFET with a patented 'GPU-First' intelligent voltage stabilizer to prioritise clean power to the graphics card, and its magnetic OLED display can be repositioned to suit fan-up or fan-down installation. A 10-year warranty and dual platinum certifications make it a long-term foundation for a demanding build.
Why this product
GaN MOSFET for higher efficiency
The GaN MOSFET delivers up to 30% more power efficiency than standard MOSFETs and enables a more organised internal layout for cooler operation.
GPU-First voltage stabilizer
The patented intelligent voltage stabilizer enhances voltage delivery to the graphics card by up to 45%, supporting smoother performance during intensive gaming and overclocking.
ATX 3.1 with PCIe Gen 5.1 support
Full ATX 3.1 compliance means tighter voltage and current regulation for next-gen hardware, and a 16-pin PCIe cable capable of delivering up to 600 watts is included.
Dual platinum certifications
It holds both 80 PLUS Platinum and Cybenetics Platinum certifications, achieved through low-ESR Japanese capacitors for improved efficiency, acoustics and heat output.
Magnetic OLED display, repositionable
The signature Thor OLED display attaches magnetically and can be swapped to either side of the unit to suit fan-up or fan-down PSU orientation inside the case.
10-year warranty on core operation
Core product operation is warranted for 10 years. RGB LEDs carry a separate 3-year warranty.
- Total Output1200W
- Efficiency Rating80 PLUS Platinum / Cybenetics Platinum
- ATX StandardATX 3.1
- PCIe Connector16-pin PCIe Gen 5.1 (up to 600W)
- Warranty10 years (core); 3 years (RGB LEDs)
- Dimensions190 × 150 × 86 mm
- Weight2.37 kg
- MTBF>120,000 hrs @ 25°C
- SKUASU-2298
- EAN4711387610442
- Compatible with ATX 3.1 and ATX12V form-factor motherboards and cases.
- Includes a 16-pin PCIe Gen 5.1 cable, making it ready for current and next-gen graphics cards that use this connector.
- Two CPU 4+4-pin connectors are included, supporting dual-CPU-power-connector motherboards common in high-end desktop platforms.
- Accepts AC input from 100–240 V, so it is compatible with mains voltage standards worldwide.
- Aura Sync ARGB support allows lighting integration with other ASUS ROG Aura Sync components.
- The OLED display's RGB LEDs carry a 3-year warranty only, not the 10-year warranty that covers core PSU operation.
Best for
- High-end gaming builds running power-hungry GPUs that benefit from the GPU-First voltage stabilizer and a 16-pin PCIe 600W cable.
- Overclockers who need Turbo Mode for maximum fan cooling during sustained heavy workloads.
- Long-term builders who want a 10-year warranty and certified platinum efficiency to reduce running costs over time.
- ATX 3.1 adopters building around next-gen hardware that requires tighter voltage regulation and PCIe Gen 5.1 cabling.
- Quiet-build enthusiasts who can enable 0dB mode so the fan shuts off entirely at lower load levels.
Trade-offs
- Budget-conscious builders: this is a flagship PSU with features — GaN MOSFET, OLED display, Aura Sync — that go beyond what a basic build requires.
- Small form-factor cases: at 190 × 150 × 86 mm it follows standard ATX PSU dimensions and will not fit SFX or SFX-L enclosures.
- Systems well under 1200W total draw: the full capacity is designed for the most demanding configurations, and a lower-wattage unit may be more cost-appropriate for modest builds.
- Users who prioritise OLED longevity equally with core hardware: the RGB LEDs are covered for only 3 years, not the full 10-year core warranty.
ROG THOR 1200W PLATINUM III — ULTIMATE POWER. UNMATCHED STABILITY.
The ROG Thor 1200W Platinum III delivers the ultimate power and stability demanded by gamers. A next-gen GaN MOSFET delivers superior efficiency, and "GPU-First" voltage sensing features a patented-intelligent voltage stabilizer, ensuring top-tier performance and stability. Meanwhile, there is Turbo Mode for maximum cooling when overclocking or for other demanding workloads.
The ROG Thor 1200W Platinum III also features the signature Thor OLED display, now upgraded for easy magnetic attachment – it can be swapped to either side of the unit to accommodate fan-up or fan-down PSU installation.
GaN MOSFET
GaN MOSFET delivers up to 30% more power efficiency than standard MOSFETs and a more organized internal layout for cooler operation.
"GPU-First" Intelligent Voltage Stabilizer
"GPU-First" voltage sensing with patented intelligent voltage stabilizer enhances voltage delivery to your graphics card by up to 45% for smoother gaming and unwavering performance.
ATX 3.1 Compatible
ATX 3.1 ushers in tighter voltage and current regulation standard for next-gen hardware - and the ROG Thor 1200W Platinum III arrives ahead of the curve with full compliance. A 16-pin PCIe cable capable of sending up to 600 watts of power.
80 PLUS Platinum & Cybenetics Platinum Certification
The ROG Thor 1200W Platinum III achieves 80 PLUS Platinum and Cybenetics Platinum certifications by leveraging low-ESR Japanese capacitors that deliver stability and efficiency, leading to improved power consumption, heat generation, acoustics and reliability.
10-year Warranty
We're so confident about the reliability of the ROG Thor 1200W Platinum III that we back it with a 10-year warranty. *Core product operation is guaranteed for 10 years. The RGB LEDs are subject to a 3-year warranty.
General
| Brand | ASUS ROG |
|---|---|
| Model | ROG Thor 1200W Platinum III |
| Form Factor | ATX12V |
| ATX Standard | ATX 3.1 |
| Total Output | 1200W |
| Weight | 2.37 kg |
| Dimensions | 190 × 150 × 86 mm |
| Hazardous Materials | RoHS compliant |
Power & Efficiency
| 80 PLUS Rating | 80 PLUS Platinum |
|---|---|
| Cybenetics Efficiency | Platinum |
| Cybenetics Noise Level | Lambda A++ |
| PFC Type | Active PFC |
| AC Input Range | 100–240 Vac |
| DC Output Voltages | +3.3V, +5V, +12V, -12V, +5Vsb |
| Maximum Load (per rail) | +3.3V: 30A, +5V: 25A, +12V: 100A, -12V: 0.3A, +5Vsb: 3A |
| Combined Load | +3.3V/+5V: 125W, +12V: 1200W, -12V: 3.6W, +5Vsb: 15W |
| MTBF | >120,000 hrs @ 25°C |
Connectivity & Cables
| Motherboard Connector | 24/20-pin × 1 |
|---|---|
| CPU Connectors | 4+4-pin × 2 (1000 mm each) |
| PCIe 16-pin (Gen 5.1) | × 1 (750 mm) |
| PCIe 6+2-pin | × 4 (750 mm each, 1-to-1) |
| SATA Connectors | × 7 (1-to-4 cable + 1-to-3 cable) |
| Peripheral Connectors | × 6 |
| Motherboard Cable Length | 610 mm |
Features & Protection
| Protection Features | OPP, OVP, UVP, SCP, OCP, OTP |
|---|---|
| 0dB Technology | Supported — fan shuts off entirely at low load |
| 0dB Fan Button | Yes — toggles between silent and continuous fan modes |
| Turbo Mode | Yes — maximum fan speed for overclocking or heavy workloads |
| OLED Display | Magnetic, repositionable to either side |
| Lighting | Aura Sync ARGB |
| Warranty | 10 years (core); 3 years (RGB LEDs) |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.