CorsairReleased 2023
Corsair RM850x Shift
A solid mid-range pick in the power supplies line-up, with 850 W up front.
66/100
850 W80 Plus GoldFully modular10 yearsATX 3.0Black
£191best price at Amazon
In stock at 1 retailer
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Why we rate it
- Zero RPM mode
- 12V-2x6 / 12VHPWR
- Above-average fan size
- Above-average warranty
- Below-average wattage
Score profile
Scored against the power supplies classWhere the Corsair RM850x Shift wins and loses
Full specification
Grouped · supported features marked in blueSpecifications
Output
Wattage850 W
Efficiency rating80
ATX standardATX 3.0
Form factor and design
Form factorATX
ModularFully modular
ColourBlack
Cooling and noise
Fan size135 mm
Zero RPM modeYes
Connectors
12V-2x6 / 12VHPWRYes
Features and warranty
Warranty10 years
Watch it in action
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Head to head
Highlighted cell = better in that rowCorsair RM850x Shift vs MSI MSI MAG A1000GLS 1000W
Corsair RM850x ShiftMSI MAG A1000GLS 1000W
| CorsairCorsair RM850x ShiftThis page | MSIMSI MAG A1000GLS 1000W | |
|---|---|---|
| Overall score | 66 /100 | 66 /100 |
| Wattage | 850 W | 1000 WBetter |
| Efficiency rating | 80 | 80 |
| Form factor | ATX | ATX |
| Modular | Fully modular | Non-Modular |
| Warranty | 10 years | — |
Who it's for
Is the Corsair RM850x Shift right for you?
Buy it if
Buyers on a budget
Anyone who needs a dependable power supplie for the essentials without overspending.
Skip it if
Skip it if
You need flagship-tier performance, in which case a higher-tier power supplie is the better call.
Performance builder
Chasing frames and headroom in a high-end rig.
good
Mainstream builder
Wants strong value in a balanced build.
good
Budget builder
Stretching every pound in an entry rig.
good
Common questions
Before you buy
Is the Corsair RM850x Shift worth it?
It depends on what you need. It scores 66/100 against other power supplies, a solid mid-range result where the class average is around 58.
What stands out on the Corsair RM850x Shift?
Its zero rpm mode stands out, a genuinely useful feature if your setup calls for it.
How does it compare to the Asus ROG Strix 1000W Platinum PSU?
The Asus ROG Strix 1000W Platinum PSU scores 67/100 versus this one at 66/100, so it is the step up on the spec sheet.
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