
ASUS ROG Thor 1200W Platinum III PSU (80 Plus Platinum Certified, ATX 3.1, GaN MOSFET, GPU-First Intelligent Voltage Stabilizer, Magnetic OLED Display, Turbo Mode, 10-Year Warranty)
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AI Verdict
This 1200W ATX 3.1 80 Plus Platinum PSU with GaN MOSFETs and a magnetic OLED display is for high-end builds prioritizing GPU power delivery and quiet operation.
This 1200W 80 Plus Platinum ATX 3.1 PSU is a strong fit for high-performance systems, especially those with demanding GPUs, due to its 'GPU-First' voltage stabilizer and GaN MOSFETs for efficiency. Its Lambda A++ certification for noise levels ensures quiet operation, aligning with enthusiast expectations for premium components.
If 1200W is insufficient for extreme multi-GPU or future setups, look for a 1600W 80 Plus Titanium certified PSU for higher wattage and efficiency.
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Pros
- GaN MOSFETs deliver up to 30% more power efficiency than standard MOSFETs, allowing for a more organized internal layout and enhanced airflow.
- The "GPU-First" voltage stabilizer enhances voltage delivery to your graphics card by up to 45% for smoother gaming performance.
- Magnetic OLED display shows real-time power draw and can be swapped to either side for flexible installation.
- Achieves Cybenetics Lambda A++ certification with an average noise level of 10.45 dBA, operating under 15 dB(A) at all times.
- Dual-ball-fan bearings are rated to last up to 80,000 hours, which is twice as long as sleeve bearing designs.
- High-performance copper pins on cables reduce connector temperature by up to 12°C.
Cons
- The unit weighs nearly 5.3 lbs, which can be cumbersome for compact builds.
- The modular cables, while promising better management, can be difficult to connect, potentially leading to a tangled appearance.
- The OLED display, while functional, can be a distraction during intense gaming sessions.
- The PSU does not include braided cables, instead using etched plastic coverings to mimic the look.
- Some users reported issues with the OLED screen on new units.
Dimension Scores
The 80 Plus Platinum certification and GaN MOSFETs delivering up to 30% more power efficiency position this PSU at the top tier for efficiency.
With a Cybenetics Lambda A++ certification and an average noise level of 10.45 dBA, it is among the quietest PSUs available.
Features like ROG heatsinks, a fully aluminum enclosure, dual-ball-fan bearings, and high-performance copper pins indicate a premium construction.
The fully modular design and etched cables with high-performance copper pins aid in cable management, though the lack of braided cables is a minor drawback for some.
Best For
- High-end gaming PCs with power-hungry GPUs requiring stable voltage delivery.
- Enthusiast builds where low noise operation is a priority.
- Systems with ATX 3.1 compatibility and future-proofing for next-gen hardware.
- PC builds that showcase internal components, benefiting from the OLED display and RGB lighting.
Not Recommended For
- Budget-conscious PC builders, due to its premium price point.
- Users who prefer minimalist builds without extra visual features like an OLED screen or RGB.
- Compact SFF (Small Form Factor) cases where the 5.3 lbs weight might be an issue.
Watch Out For
- The 5.3 lbs weight of the PSU might make installation challenging in smaller or vertically mounted cases.
- The $499 price tag makes it significantly more expensive than many other 1200W Platinum-rated PSUs.
- Some users experienced issues with the OLED screen on new units, suggesting potential quality control concerns for that specific feature.
- The claimed 30% efficiency improvement from GaN MOSFETs might not translate to a noticeable real-world difference for all users, potentially being more of a marketing point.
- The modular cables, despite being etched, are not braided, which some users expect from a premium PSU.
Full Specifications
| ASIN | B0FFYB49YH |
| Brand | ASUS |
| Color | BLACK |
| Series | ROG-THOR-1200P3-GAMING |
| Wattage | 1200 watts |
| Model Name | ROG-THOR-1200P3-GAMING |
| Form Factor | ATX |
| Item Weight | 5.3 pounds |
| Manufacturer | ASUS |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 1200 Watts |
| Item model number | ROG-THOR-1200P3-GAMING |
| Compatible Devices | personal computer |
| Product Dimensions | 7.5 x 5.9 x 3.3 inches |
| Item Dimensions LxWxH | 7.5 x 5.9 x 3.3 inches |
| Item dimensions L x W x H | 7.5 x 5.9 x 3.3 inches |
What Buyers Say
Many users are drawn to this PSU for its unique aesthetic features, especially the magnetic OLED display and RGB lighting, which stand out in a component usually hidden. While its quiet operation, certified at 10.45 dBA, is consistently praised, some find the 5.3 lbs weight and the $499 price tag to be significant hurdles. The 'GPU-First' voltage stabilization is a technical highlight, but the real-world impact of GaN MOSFET efficiency is sometimes questioned as marketing hype. There are also reports of the OLED screen having issues on some units.
“Man, this thing is QUIET, like seriously, I can't even hear it over my case fans, but the OLED screen flickered on me after a week, which is annoying for how much I paid.”
Common Praise
- The PSU operates with certified low noise levels, averaging 10.45 dBA, making it inaudible in most environments.
- The magnetic OLED display provides real-time power draw information and can be easily repositioned.
- The 'GPU-First' intelligent voltage stabilizer delivers up to 45% enhanced voltage stability to the graphics card.
- The 80 Plus Platinum certification ensures high power efficiency.
- The 10-year warranty provides long-term peace of mind.
Common Complaints
- The unit is heavy, weighing approximately 5.3 lbs, which can complicate installation.
- The $499 price point is considered very expensive compared to other PSUs.
- Some users reported issues with the OLED screen not functioning correctly on new units.
- The modular cables, while functional, are not braided, which is a common expectation for a premium PSU.
- The real-world benefit of GaN MOSFETs for efficiency is sometimes perceived as less impactful than advertised.
Ownership Tips
- The OLED display, while a cool feature, can become a distraction or a point of failure for some users.
- The weight of the unit requires careful handling and secure mounting, especially in non-standard case orientations.
- The 'GPU-First' feature is specifically for 16-pin PCIe power cables, so older GPU connections won't benefit from it.
- The 0dB fan mode means the fan won't spin until the PSU reaches 30% load, which is 360W for this 1200W model.
- The etched cables, while looking textured, don't offer the same flexibility or premium feel as individually braided cables.
Frequently Asked Questions
What is the noise level of this PSU?
The PSU has a Cybenetics Lambda A++ certification, meaning it operates below 15 dB(A) at all times, with an average noise level of 10.45 dBA across tested loads.
Does this PSU support the latest ATX 3.1 standard?
Yes, the ROG Thor 1200W Platinum III is compliant with the ATX 3.1 standard, ensuring enhanced voltage and current regulation for modern hardware.
Can the OLED display be repositioned?
Yes, the magnetic OLED display shows real-time power draw and can be swapped to either side of the unit to accommodate fan-up or fan-down PSU installation.
What is 'GPU-First' voltage sensing?
This patented intelligent voltage stabilizer enhances voltage delivery to your graphics card by up to 45%, providing smoother gaming and unwavering performance, especially for 16-pin PCIe power cables.
What is the warranty period for this power supply?
The ASUS ROG Thor 1200W Platinum III PSU comes with a 10-year warranty.
Buying Guide
When you're looking at a power supply, you're not just buying a box that makes your computer turn on. You're buying stability for your expensive components, especially your graphics card. You need to consider the wattage for your current and future parts, the efficiency rating to save on your electricity bill, and how quiet it runs so your PC doesn't sound like a jet engine. Don't forget the physical size and cable types, as they impact how easy your build will be.
Wattage (1200W)
This is how much power the PSU can deliver. Think of it like the engine size in a car; a bigger engine (higher wattage) can handle more demand (more powerful CPU/GPU) without straining. 1200W is a lot, suitable for high-end systems with top-tier graphics cards.
80 Plus Platinum Certified
This certification indicates how efficiently the PSU converts wall power into usable PC power. Platinum means it's very efficient, wasting less energy as heat. It's like getting better gas mileage in your car – less energy wasted, lower electricity bills, and less heat generated inside your PC.
ATX 3.1
This is the latest standard for power supplies, specifically designed to handle the transient power spikes of modern, power-hungry GPUs. It ensures your PSU can deliver sudden bursts of power without tripping or causing system instability, like a robust electrical system in a house that can handle all appliances running at once.
Modular
A modular PSU lets you detach any cables you don't need. This means less clutter inside your PC case, which improves airflow and makes your build look cleaner. It's like having custom-fit cables for your setup instead of a tangled mess.
Alternatives
If this PSU doesn't fit, look for a fully modular 80 Plus Gold or Titanium certified unit with ATX 3.0 or 3.1 compliance and a wattage appropriate for your specific CPU and GPU combination.



