This article covers CORSAIR RM1000x 完全モジュラー低ノイズATX電源.

Overview

The CORSAIR RM1000x redefines what users expect from a 1000W power supply, packaging Intel’s latest ATX 3.1 standard into a fully modular unit that prioritizes low noise and high efficiency. With Cybenetics Gold certification (up to 91% efficiency), it comfortably handles transient power spikes from modern high-end GPUs while keeping fan noise to a minimum. The native 12V-2x6 connector means no adapter is needed for GeForce RTX 40 series cards, simplifying cable management and improving reliability. Inside, CORSAIR uses 100% Japanese 105°C-rated electrolytic capacitors for long-term durability. A 140mm fluid dynamic bearing (FDB) fan provides quiet, reliable cooling, even under load. The embossed, ultra-flexible cables are easy to route, making it a pleasure to work with inside any standard ATX case. Positioned in the upper-mid to high-end segment, the RM1000x offers a compelling balance of features, performance, and warranty. It comes backed by a 10-year warranty, making it a long-term investment for serious builders who plan to keep their system for years.

Compatibility Guide

Form factor: Standard ATX. Fits most mid-tower and full-tower cases without clearance issues. Primary motherboard connectors: ATX 24-pin, EPS 8-pin (two provided). Native 12V-2x6 connector for GPUs eliminates adapter requirements. Fully modular design lets you connect only the cables you need. Six PCIe 6+2-pin cables support multi-GPU configurations, though 1000W is better suited for single high-end GPU builds. For a system with a Core i9 or Ryzen 9 paired with an RTX 4090, 1000W provides healthy headroom. Lower-power builds (e.g., RTX 4060) will find this unit oversized, but it leaves ample room for future upgrades.

Product Info

The CORSAIR RM1000x is built around Intel’s ATX 3.1 specification, guaranteeing stable operation under transient loads. Its Gold efficiency rating tracks well against more expensive Platinum units for most users. Key details include: Power rating: 1000W Efficiency: Cybenetics Gold (up to 91%) Connectors: native 12V-2x6, ATX 24-pin, EPS 8-pin (×2), PCIe 6+2-pin (×6), SATA (×12), peripheral 4-pin (×4) Cooling: 140mm FDB fan Protections: OVP, OCP, SCP, OTP, OPP Warranty: 10 years * Release: Late 2024 Pricing sits around ¥34,000 on major Japanese retailers like —typical for a 1000W Gold-rated unit with ATX 3.1 features.

Best Use Cases

High-end gaming rigs: Perfect for systems sporting an RTX 4090 or 5080. The native 12V-2x6 connector eliminates adapter bulk, and 1000W leaves headroom for power spikes. Long-term builders: 10-year warranty combined with Japanese capacitors offers peace of mind for the next several GPU generations. This is a set-and-forget PSU. * Noise-conscious users: The 140mm FDB fan is remarkably quiet under normal gaming and desktop loads. While it lacks a zero-RPM mode, the noise level remains low enough not to be a distraction. ## Alternatives
Main competitors include the Seasonic Focus GX-1000 (ATX 3.0, Gold) and be quiet! Straight Power 12 1000W (ATX 3.0, Gold). The RM1000x stands out with full ATX 3.1 compliance and a native 12V-2x6 connector—no adapter needed for the latest GPUs. Seasonic’s unit is slightly more efficient under heavy loads, but CORSAIR’s broader connector set and longer warranty give it an edge for enthusiasts. If you prioritize absolute silence at idle, be quiet!’s model includes a zero-RPM fan mode, which the RM1000x lacks.

Things to Consider

ATX 3.1 compatibility covers current GPUs, but future connector standards may still require adapters or cable replacement. The RM1000x’s native 12V-2x6 is future-proof for now, but not indefinitely. 1000W is overkill for mid-range builds (e.g., RTX 4060 + Ryzen 5). Consider the 750W or 850W RMx variants to save cost without sacrificing features. Cable length is adequate for most ATX cases, but the EPS cable measures only 65cm—tight for bottom-mount PSUs feeding top-mounted CPU sockets in full towers. Measure your case before purchase. No zero-RPM fan mode means the fan always spins at light load. For silent-PC purists, competing units from be quiet! or Seasonic offer fanless operation at low loads.

Product Disclosure (Amazon)

  • Manufacturer: CORSAIR
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0DJ1M9C62
  • Note: This article covers a manufacturer-made product based on Amazon listing details.