This article covers CORSAIR SF850 (2024) 完全モジュラー 低ノイズ 80 プラス プラチナ ATX 電源.

Overview

The CORSAIR SF850 (2024) is an 850W SFX power supply unit with 80 PLUS Platinum certification. It packs high power density and reliability into a compact form factor, making it ideal for Small Form Factor (SFF) PCs and space-constrained builds. Supporting ATX 3.0 and PCIe 5.0 standards, it handles transient power spikes from modern high-end graphics cards with ease. The fully modular Type 5 Micro-Fit cable system minimizes clutter and optimizes airflow inside small cases. Built with 105°C-rated Japanese capacitors, it ensures long-term stable operation.

Compatibility Guide

This unit uses the SFX form factor but includes an SFX-to-ATX bracket for installation in standard ATX cases. It fits any motherboard size ? ATX, Micro-ATX, Mini-ITX ? as long as the power supply mounting supports SFX or ATX with the bracket. The Type 5 Micro-Fit cables are flexible and easy to route even in tight spaces. A dedicated PCIe 5.0 12VHPWR cable is included, so NVIDIA GeForce RTX 40-series and upcoming GPUs can be connected directly without adapters. The unit also provides two EPS 8-pin CPU power cables, covering high-end motherboards.

Product Info

The CORSAIR SF850 (2024) launched in 2024 as a high-end SFX power supply. Its 80 PLUS Platinum certification delivers over 92% efficiency at 50% load, reducing heat and electricity costs. Inside, 105°C-rated Japanese capacitors ensure long-term reliability. Cooling is handled by a 92mm fluid dynamic bearing (FDB) fan with a Zero RPM mode that keeps the fan off under low loads for silent operation. The unit comes with a 7-year warranty. Market positioning is at the premium end of SFX units, aimed at users who demand top-tier power quality in compact builds. With 850W capacity, it comfortably supports single-GPU high-end configurations.

Best Use Cases

SFF / ITX gaming PC builders: The compact SFX size delivers 850W of Platinum-rated power, enough for high-end GPUs like the RTX 4080 SUPER or RTX 5070 Ti. Silent PC enthusiasts: Zero RPM fan mode and FDB bearings keep noise to a minimum during light workloads, making it ideal for 24/7 creative workstations or media servers. * ATX case users wanting extra space: Installing an SFX PSU in an ATX case frees up internal volume for easier cable management and larger CPU coolers. The included bracket makes installation straightforward.

Things to Consider

Cable lengths are designed for SFX cases; in large ATX full-tower cases with tall CPU coolers or multiple drives, some cables may not reach. Verify the EPS connector location on your motherboard before purchase. The Type 5 Micro-Fit connectors are proprietary, limiting compatibility with aftermarket custom cables. If you plan to use extension cables or sleeved cables, ensure they explicitly support Type 5. While 850W is sufficient for single-GPU mid-high to high-end systems, it may not be adequate for dual-GPU setups, extreme overclocking, or sustained high-load operation. In such scenarios, consider the SF1000L or a 1000W+ ATX unit.

Product Disclosure (Amazon)

  • Manufacturer: CORSAIR
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0D45PQ8C4
  • Note: This article covers a manufacturer-made product based on Amazon listing details.