This article covers Corsair RM1000x Shift PC電源ユニット.

Overview

The Corsair RM1000x Shift is a 1000W fully modular power supply that complies with the ATX 3.0 and PCIe 5.0 standards, earning an 80PLUS Gold certification for up to 90% efficiency. It combines a 140mm fluid-dynamic bearing fan with a zero-RPM mode that keeps the fan off under light load, delivering near-silent operation in many real-world scenarios. Its headline feature is the side-mounted modular connector layout. Instead of the traditional rear-facing connectors, the Shift series moves all cable ports to the left side of the PSU, freeing up the cable management area behind the motherboard tray. This makes routing cables significantly cleaner and easier, especially in mid-tower cases where space is tight. Internally, the RM1000x Shift uses 105°C-rated Japanese electrolytic capacitors and comes with a 10-year warranty. It sits comfortably in the upper-mid-range and high-end market segments, offering a compelling mix of capacity, efficiency, and a unique cable-management advantage.

Compatibility Guide

Form factor: Standard ATX (180mm deep × 150mm wide × 86mm high). Fits most ATX and mid-tower cases, but check clearance between the PSU and the case shroud due to the side connectors. CPU power: Two EPS12V (4+4pin) connectors support high-end boards with 8+4 or 8+8 CPU power. GPU power: One native 12VHPWR (12+4pin) connector for modern graphics cards, plus three PCIe 6+2pin cables and four dual-connector PCIe cables, providing extensive GPU connectivity. Storage: 16 SATA power connectors and 8 peripheral 4-pin connectors for drives and accessories. * ATX 3.0 compliance ensures it can handle transient power spikes common with next-generation GPUs, making it future-ready for upcoming high-wattage components.

Product Info

Released in 2023, the RM1000x Shift is widely available through retailers like at a street price around ¥25,000–¥29,000. Corsair backs it with a 10-year manufacturer warranty covering defects and failures. The unit is marketed as a premium high-efficiency PSU with a twist – the side connector layout that simplifies cable management. Market positioning: upper-mid to high-end. The 1000W capacity and Gold efficiency are standard for this tier, but the side-mounted modular design gives it a unique edge over competitors. It's ideal for enthusiasts who value clean builds and are willing to pay a slight premium for better cable routing.

Best Use Cases

High-end gaming builds: With native 12VHPWR and 1000W on tap, it pairs perfectly with an RTX 4090 or future high-power GPUs. The side connectors also keep the GPU power cable tidy, reducing clutter around the front of the case. Beginner and intermediate builders frustrated with cable management: The Shift design dramatically simplifies routing – cables exit from the side, so you don't have to fight for space behind the motherboard tray. It's an excellent first fully modular PSU. Silent-PC enthusiasts: Zero RPM mode keeps the fan off entirely during light use (web browsing, office work), and the 140mm FDB fan runs quietly under load. When not to choose it: If your build is mid-range (RTX 4060 + Ryzen 5 7600), 1000W is overkill – a 750W or 850W Shift model saves money while retaining the same cable benefits. Also, very compact cases may have clearance issues with the side connectors. ## Alternatives
Seasonic Focus GX-1000 Gold: Similar 1000W Gold-rated modular PSU at a comparable price. Seasonic's unit uses a conventional rear-connector layout, making it easier to fit in narrower cases. The Focus GX-1000 is also known for very low ripple noise. The RM1000x Shift wins on cable management flexibility. be quiet! Dark Power 13 1000W: Cybenetics Platinum efficiency, a fully silent semi-fanless mode, and 10-year warranty. It's pricier than the Corsair but offers higher efficiency and renowned acoustic engineering. Choose be quiet! if power efficiency and complete silence are your top priorities; choose Corsair if clean cabling matters more.

Things to Consider

Side connector clearance: The left-side ports require at least some gap between the PSU and the case wall/shroud. Measure your case's PSU cavity before purchasing – some compact ATX cases may not have the 25–30mm needed for comfortable cable bends. Overkill for many builds: If you're not planning a flagship GPU or high-wattage CPU, consider the RM750x Shift or RM850x Shift. They offer the same cable management advantages at lower cost. * 12VHPWR bend radius: With the connector on the side, the 12VHPWR cable may need to bend sharply against the motherboard tray. Ensure you have enough room to route it without excessive bending, which can damage the connector. ## FAQ Q: How big is the RM1000x Shift compared to a standard ATX PSU? A: It's slightly deeper at 180mm (standard ATX is 150–160mm). Width and height are standard (150mm × 86mm). Most mid-tower and full-tower cases have enough depth, but check your case specifications

Product Disclosure (Amazon)

  • Manufacturer: CORSAIR
  • Seller: ノースフォワード
  • Fulfilled by: Amazon
  • ASIN: B0BP9PN8LX
  • Note: This article covers a manufacturer-made product based on Amazon listing details.