This article covers Corsair RM750x 完全モジュラー低ノイズATX電源.

Overview

Corsair's RM750x is a 750W fully modular ATX power supply that meets the Intel ATX 3.1 specification and supports PCIe 5.1 with a native 12V-2x6 connector. This means you can directly connect the latest GeForce RTX 40/50 series GPUs without any adapter dongle, a major convenience for builders. The unit carries Cybenetics Gold efficiency certification, delivering up to 91% conversion efficiency. A 140mm fluid dynamic bearing (FDB) fan keeps noise levels very low during operation, and 100% Japanese 105°C-rated electrolytic capacitors ensure long-term reliability. Corsair backs this PSU with a 10-year warranty, underlining its premium build quality. Positioned as a mid-to-high-end offering, the RM750x strikes a strong balance between features and price. At around ¥24,500 in Japan (or ~$160 in the US), it competes directly with other premium 750W units but stands out with its forward-looking ATX 3.1 compliance and native 12V-2x6 connector.

Compatibility Guide

Standard ATX form factor (150 x 86 x 140mm) fits most mid-tower and full-tower cases. Double-check your case's PSU clearance if it's a compact ATX chassis under 140mm depth. Comes with: 24-pin ATX main, two EPS12V 4+4-pin CPU, three PCIe 6+2-pin, one native 12V-2x6 (12+4-pin), eight SATA, and four peripheral 4-pin connectors. The 12V-2x6 connector is compatible with NVIDIA GeForce RTX 40/50 series and future GPUs using the same connector. No adapter needed. For older cases without PSU shroud clearance, the embossed cables are flexible and easy to route, but ensure sufficient space behind the motherboard tray. * Recommended for systems with a single high-end GPU (up to RTX 4070 SUPER / RX 7800 XT class) paired with a mid-range CPU.

Product Info

The Corsair RM750x launched in late 2025 as part of the refreshed RMx series. It carries a Cybenetics Gold efficiency rating, comparable to 80 PLUS Gold. The unit is fully modular, with low-profile combs on the embossed cables for clean cable management. Warranty is 10 years, which is standard for premium PSUs. The retail price is around ¥24,500 on Japan and roughly $159.99 in the US market. It's available through major retailers and Corsair's own store.

Best Use Cases

Mid-range PC builders: Perfect for an RTX 4070 or RTX 4070 SUPER with a Core i5 or Ryzen 5. 750W provides ample headroom for gaming at 1440p high refresh rates, and the native 12V-2x6 connector simplifies GPU installation. Silence-oriented users: The 140mm FDB fan stays quiet even under moderate load. While not semi-fanless, the fan curve is very conservative; most daily tasks keep it nearly inaudible. Cable management enthusiasts: Fully modular design with soft, embossed cables and included combs makes for clean, professional-looking builds. No need to hide unused cables. Long-term investment builders: With a 10-year warranty and high-quality Japanese capacitors, this PSU is built to last through multiple system upgrades without worry. ## Alternatives
Seasonic Focus GX-750: Similar specs (80 PLUS Gold, fully modular, 10-year warranty) but lacks a native 12V-2x6 connector. You'll need an adapter for RTX 40/50 GPUs. The Seasonic is often $10-20 cheaper, so if you don't need the latest connector, it's a solid choice. be quiet! Pure Power 12 M 750W: 80 PLUS Gold, ATX 3.0 with 12VHPWR, but not ATX 3.1. Slightly louder at high loads, and cables are stiffer. The be quiet! is an excellent unit, but the RM750x offers a newer standard and easier cable management. If native 12V-2x6 matters (and it should for future-proofing), the RM750x is the better buy.

Things to Consider

750W is sufficient for most mid-range builds, but if you plan to run an RTX 4080/5080 or a Core i9/Ryzen 9, consider an 850W-1000W unit to avoid overloading the PSU. The RM750x does not feature a Zero RPM fan mode. The fan never fully stops, though it spins very slowly at low loads. If complete silence under idle is critical, look for PSUs with fanless operation (e.g., Corsair RMx Shift series). The physical size (150mm depth) is standard ATX, but some compact cases (e.g., Silverstone SG13) may not fit. Always check case specifications. Compared to the slightly cheaper Corsair RM750e (2023), the RM750x offers better cables, higher-quality capacitors, and a 12V-2x6 connector. The price premium is modest, so for most builders, the RM750x is worth the extra cost. ## FAQ Q: Can this PSU power an RTX 5070? A: Yes. The RM750x has a native 12V-2x6 connector, which is exactly what the RTX 5070 uses (assuming NVIDIA continues with the 12V-2x6 standard). 750W is plenty for an RTX 5070-class card. Q: Is Cybenetics Gold better than 80 PLUS Gold? A: Both are efficiency certifications. Cybenetics also measures noise, so it provides a more complete picture. In practice, the efficiency levels are very similar; either badge is trustworthy. Q: The 10-year warranty — what does it cover? A: Corsair's warranty c

Product Disclosure (Amazon)

  • Manufacturer: CORSAIR
  • Seller: Amazon US
  • Fulfilled by: Amazon US
  • ASIN: B0FLG9Y4HZ
  • Note: This article covers a manufacturer-made product based on Amazon listing details.