This article covers ASUS ROG Thor 850W Platinum II (フルモジュラー電源.

Overview

The ASUS ROG Thor 850W Platinum II is a premium power supply that sits at the top of the 850W class. It carries an 80 Plus Platinum efficiency rating and a Lambda A++ noise certification, meaning it is both highly efficient and incredibly quiet. A distinctive OLED panel on the side displays real-time power consumption, while the 135mm Axial-tech PWM fan with 0dB mode stops completely under low loads. The unit is built with 100% Japanese capacitors and a proprietary ROG heatsink to keep internal temperatures low. This PSU targets gamers and enthusiasts who build show-worthy PCs with ROG components. Full modular cabling makes cable management easy, and the included sleeve cables add a premium touch. The 10-year warranty reflects ASUS’s confidence in long-term reliability.

Compatibility Guide

Form Factor: Standard ATX (160mm depth) fits most mid-tower and full-tower cases. Check your case’s PSU clearance before buying. Connectors: Main 24-pin ATX, dual EPS 8-pin (CPU), six PCIe 8-pin (GPU), twelve SATA, and six Molex. Ample for any single-GPU system. Power Headroom: 850W comfortably handles a Ryzen 7 / Core i7 + RTX 4070 Ti Super build. For an RTX 4080 Super or i9-14900K, 850W is borderline; upgrading to 1000W is safer if you plan aggressive overclocking. Cable Management: Full modular means you only attach the cables you need. The included sleeve cables are flexible enough for most mid-tower builds but can be a bit stiff in compact ITX cases.

Product Info

The ASUS ROG Thor 850W Platinum II (model ROG-THOR-850P2-GAMING) launched in mid-2023 as a flagship offering. It is positioned above Gold-rated units and competes directly with other Platinum+ silent flagships like the Seasonic Prime TX-850 and Corsair HX850i. The key differentiators are the OLED power monitor, Lambda A++ silence certification, and full integration with the ROG ecosystem (Aura Sync). Japanese capacitors and a 10-year warranty seal the premium package. Pricing in Japan hovers around ¥63,000–¥65,000.

Best Use Cases

Silence-Obsessed Enthusiasts: If you demand near-complete silence during desktop use, the 0dB fan mode (fan stops at low loads) and Lambda A++ rating make this a top pick. You can place your PC on a desk without hearing the PSU. Against: If fan noise doesn’t bother you, a cheaper Gold unit makes more sense. ROG-Themed Builds: The brushed aluminum finish, integrated OLED, and Aura Sync RGB synchronize beautifully with ROG motherboards, graphics cards, and cases. Side-window cases show off the PSU’s aesthetics. Against: If you don’t care about appearance, a plain black PSU saves money. * Long-Term Reliability Seekers: The 10-year warranty and Japanese capacitors promise decade-long service without needing a replacement. This suits users who plan to keep their PC for years without upgrading. Against: If you upgrade GPUs every 2–3 years, the higher upfront cost may not pay off.

Things to Consider

Premium Price: Expect to pay ¥15,000–¥20,000 more than comparable 80+ Gold 850W units. The OLED and silence separately cost extra. ATX 3.0 / 12VHPWR Absence: This unit is ATX 2.4 and lacks a native 12VHPWR connector. RTX 40-series owners must use the included adapter cables, which adds cable clutter. Future ATX 3.0 GPUs may require additional adapters. Real‑World Need for OLED: The power draw display is more of a novelty than essential function. It is nice for a showcase, but not a reason to buy over performance. Case Depth Check: 160mm depth is standard, but some compact mid-towers (e.g., Fractal Design Meshify C) have a PSU limit of 160mm with HDD cage removed. Always measure. * Overkill for Mid-Range Builds: An i5 + RTX 4060 system draws under 400W; an 850W Platinum unit is wasted money unless you plan a future high-end GPU upgrade. ## FAQ
Q: Can this power supply run an RTX 4090? A: Technically yes, but we do not recommend it. The RTX 4090’s transient spikes can exceed 850W momentarily, causing shutdowns. You would also need to use three PCIe 8-pin to 12VHPWR adapter cables. For an RTX 4090, buy a 1000W ATX 3.0 PSU with a native 12VHPWR connector instead. Q: How does the 0dB mode work, and can I disable it? A: The fan stops completely when the load is below roughly 40% or the temperature is low. This makes the PSU silent during web browsing and light gaming. You can toggle 0dB mode on or off via a physical switch on the back. With it off, the fan always spins at a low speed. Q: Is the OLED customizable? A: Yes, the OLED display shows real-time power consumption by default. Using the ASUS ROG Armoury Crate software, you can customize the animation, brightness, and even display custom text or logos. However, the customization requires an ASUS motherboard and the software installed.

Product Disclosure (Amazon)

  • Manufacturer: ASUS
  • Seller: PENNY LANE
  • Fulfilled by: PENNY LANE
  • ASIN: B0C3ZLPNPM
  • Note: This article covers a manufacturer-made product based on Amazon listing details.