This article covers ASRock PRO 850G 電源.

Overview

The ASRock PRO 850G is an 850W ATX power supply with 80 PLUS Gold certification. It fully complies with ATX 3.1 and PCIe 5.1 specifications, and includes a native 12V-2x6 connector for modern graphics cards. A quiet 120mm fan keeps the unit cool, making it suitable for a wide range of systems from gaming PCs to high-end workstations. A 3-year warranty provides long-term peace of mind.
This PSU sits comfortably in the mid-range category, delivering stable power and high efficiency for builds with the latest CPUs and GPUs. For power-hungry cards like the RTX 40-series or RTX 50-series, ATX 3.1 compliance helps handle transient power spikes, reducing the risk of shutdowns. The 80 PLUS Gold rating means up to 90% efficiency under typical loads, which lowers electricity bills and heat output.
ASRock is well known for motherboards, but has been expanding its power supply lineup, and the PRO 850G is a solid example. The 850W capacity is a sweet spot for high-end gaming PCs, offering headroom for future upgrades. Priced attractively while featuring the latest standards and practical features, it’s a compelling value-oriented choice for many builders.

Compatibility Guide

The PRO 850G uses the standard ATX form factor, so it fits in most PC cases without issue. As long as the chassis has a typical power supply bay, both mid-tower and full-tower cases will accommodate it. Being ATX 3.1 and PCIe 5.1 compliant, it works well with the latest motherboards and GPUs.
Connector-wise, the native 12V-2x6 connector plugs directly into RTX 30-series and newer GPUs. Traditional 8-pin PCIe and SATA connectors are also present, so older GPUs and multiple storage drives can be powered without adapters. The standard EPS connectors (4+4-pin / 8-pin) ensure compatibility with both Intel and AMD motherboards.
Real-world pairings like a Ryzen 7 7800X3D with an RTX 4070 Ti SUPER, or a Core i5-14600K with an RTX 4080 SUPER, will have ample headroom. Even low-power entry builds run fine, but you’ll be paying for capacity you may not need. Also, check your case’s cable management space—if this unit is not modular, extra cables can be a challenge in compact builds.

Product Info

This PSU is a recent release and is available through major online retailers like online retailers. The street price is around ¥17,500, which is competitive for an 80 PLUS Gold 850W unit. The warranty covers three years, backed by ASRock’s support network.
Positioned in the mid-range, the PRO 850G offers the efficiency of Gold certification and the capacity suitable for high-end gaming rigs. Its ATX 3.1 support and native 12V-2x6 connector are features often found on more expensive models, making this a strong price-performance pick.

Best Use Cases

  • First-time gaming PC builders
    ① Those planning to install an RTX 4070 or RTX 4080 and want future upgrade headroom.
    ② ATX 3.1 handles power spikes well, and the native 12V-2x6 means no adapter cables are needed for modern GPUs.
    ③ If you never plan to overclock aggressively, 850W is more than enough.
  • Creative professionals with high-end CPUs
    ① Users of Ryzen 9 or Core i9 chips who engage in video editing or 3D rendering.
    ② The PSU delivers consistent power under sustained load, keeping reliability high during long render sessions.
    ③ For dual-GPU setups or multiple NVMe drives, consider a 1000W+ unit instead.
  • Budget-conscious users who still want modern standards
    ① Those who want latest connector support without paying a premium.
    ② The price is accessible, and the unit includes key features like ATX 3.1.
    ③ If absolute silence is mandatory, look for a semi-fanless model from another brand.

Things to Consider

The 850W rating is generous for most systems, but the fan becomes audible under heavy load—the 120mm unit is not silent at max RPM. Check the official specs to see if this is a fully modular design, as non-modular units can complicate cable management, especially in smaller cases. The 3-year warranty is shorter than the 10-year coverage offered by some competitors like Seasonic or Corsair, though the price advantage may offset that.
While the PRO 850G excels at delivering modern connectivity, it may be overkill for office PCs or basic media centers that only need 300–400W. Conversely, if you plan to run a dual-GPU configuration or extreme overclocking, you’ll likely need more than 850W. Always verify your total power draw before purchase.

FAQ

Q: Can this PSU power an RTX 4090?
A: Yes. It has a native 12V-2x6 connector and is ATX 3.1 compliant, so it can handle the high transient loads of an RTX 4090. However, consider the rest of your system—if you have a power-hungry CPU and many add-in cards, a 1000W unit is safer.
Q: Is it suitable for overclocking?
A: For standard overclocking, 850W provides plenty of headroom. Extreme overclocking with LN2 or similar methods would demand more capacity, but for daily use, it’s more than adequate.
Q: How qu

Product Disclosure (Amazon)

  • Manufacturer: ASRock
  • Seller: アウトリガー
  • Fulfilled by: アウトリガー
  • ASIN: B0FSTHTLZT
  • Note: This article covers a manufacturer-made product based on Amazon listing details.