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The Corsair RM850x Shift is a fully modular 850W ATX power supply with a unique side cable interface, ATX 3.1 compliance, and 80 Plus Gold efficiency for clean, accessible builds.
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Categories : Series
SKU : POR-SER-319
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The Corsair RM850x Shift redefines power supply layout with its innovative side-mounted modular interface. Instead of reaching behind your case, you plug cables into the side of the unit, making connections and cable management drastically easier. This fully modular ATX power supply delivers 850W of clean, 80 PLUS Gold efficient power, certified for Intel ATX 3.1 and PCIe 5.1 with native 12V-2x6 support.
If you're building or upgrading a high-end gaming or workstation PC, the Shift's side interface puts all your cable connections within easy reach. It's ideal for cases with a PSU basement or shroud that offers side clearance—check your case layout to ensure enough space for cables. The compact micro-fit Type 5 Gen 1 connectors save space and keep your build tidy.
Before you buy, measure your case's PSU area. The side connector interface requires additional clearance on the side of the power supply. It works best in cases with a bottom-mounted PSU and a side opening for cables. Always confirm your case dimensions—look for cases with at least 25mm of additional side space to accommodate the connectors. If you're unsure, check our guide on RM850x Shift compatible cases.
Inside, you'll find 100% 105°C-rated Japanese electrolytic capacitors for long-term reliability. The 140mm fluid dynamic bearing fan runs at near-silent speeds with a zero RPM mode for low-load operation. A 10-year warranty backs this power supply, making it a solid investment for years of worry-free use.
Side-mounted modular interface puts cables within easy reach for cleaner builds and simple cable routing.
ATX 3.1 certified with native 12V-2x6 connector, supporting PCIe 5.1 and preventing transient power spikes.
100% 105°C Japanese electrolytic capacitors and a 10-year warranty ensure long-term reliability.
Fan: 140mm fluid dynamic bearing, Zero RPM mode
Color: White
Model: RM850x Shift
Modular: Fully modular (Type 5 Gen 1 micro-fit)
Wattage: 850W
Warranty: 10 years
Capacitors: 100% 105°C Japanese electrolytic
Compliance: Intel ATX 3.1, PCIe 5.1
Connectors: Native 12V-2x6, plus standard ATX/CPU/PCIe/SATA
Efficiency: 80 PLUS Gold
Form Factor: ATX
Product Type: ATX Power Supply
Seller: PortSide Gear
MPN: RM850x Shift
Take your build to the next level with cable management that’s actually convenient. The side-facing connectors let you route cables along the back of your case with ease, and the micro-fit design reduces clutter. Ideal for enthusiasts who appreciate a clean aesthetic and want every internal component to be easily serviceable.
Most standard ATX cases with bottom PSU mounting work fine. You need side clearance of at least 25mm to accommodate the connectors. Check your case's PSU area for a side vent or opening.
It puts all modular connectors on the side of the PSU, so you can easily unplug or plug cables without reaching behind the PSU. This simplifies builds and makes cable management cleaner.
Yes, it includes a native 12V-2x6 connector for PCIe 5.1 GPUs, along with ATX 3.1 compliance to handle transient power spikes.
The 140mm FDB fan uses a custom curve for low noise. At idle or light loads, the Zero RPM mode stops the fan entirely.
The side cable interface is a game-changer. It made building in my case so much cleaner. The PSU is quiet, efficient, and looks great in white. No complaints at all.
The RM850x Shift is a great power supply. It's fully modular, which is always a plus. The side connectors are convenient, but the included cables are a bit stiff, making them harder to route. Still, it's a quality unit.
I bought this specifically for the side connectors, and they made cable management a breeze. The white finish looks awesome. It's quiet and efficient. Definitely recommend to anyone looking for a premium PSU.
The side connectors are a unique feature, but they require a case with enough clearance. My case was a bit tight, and I had to adapt. The PSU itself works fine, but it's not as universal as regular ATX PSUs. Check compatibility first.
ATX 3.1 and PCIe 5.1 support make this future-proof. The side cables are genius. My build looks super clean, and the PSU runs silent. Very happy with my purchase.
It's a top-notch PSU with innovative side connectors. Everything works perfectly and it's very efficient. However, it's a bit expensive compared to other 850W units. But you're paying for the design and ATX 3.1 compliance.
The cables come out the side, so you don't have that bunch of cables at the back. It made my build so much cleaner. The white color is a nice aesthetic. Highly recommend if you have a compatible case.
The side connectors are great if you have a case designed for it. I didn't, so it was a struggle. The PSU works fine, but I wish I had known about the compatibility issue before buying. It's a good PSU, just not universal.
I've been using this PSU for a month now. It's completely silent under normal load, and the 80 Plus Gold efficiency is a bonus. The side connectors made cable management a joy. Highly recommended.
The PSU is great, and the side connectors are handy. However, I found the cables are a bit short for my full tower case. I had to use extensions for the CPU power. Other than that, it's been trouble-free.
The RM850x Shift is fantastic. The side cable interface is such a smart idea. My build looks so much cleaner than my previous one. It's quiet, efficient, and the white finish is beautiful. Absolutely love it.
I didn't realize the side connectors would be a problem with my case. The PSU didn't fit properly, and I had to return it. The PSU itself seems good, but it's a niche product. Make sure your case supports the shift design.
