Corsair
Corsair RM850x Shift
The Corsair RM850x Shift lands as a solid mid-range power supplie, built around 850 W.
55/100
850 W80 Plus GoldFully modularATX 3.1BlackMicro-fit
£140best price at Amazon
In stock at 3 retailers
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Why we rate it
- Zero RPM mode
- All-Japanese capacitors
- No 12v-2x6 / 12vhpwr
- 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 3.1
Form factor and design
Form factorATX
ModularFully modular
Weight1.7 kg
ColourBlack
Cooling and noise
Zero RPM modeYes
Connectors
Cable typeMicro-fit
Features and warranty
All-Japanese capacitorsYes
Watch it in action
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Head to head
Highlighted cell = better in that rowCorsair RM850x Shift vs Corsair Corsair RMX White Series (2018)
Corsair RM850x ShiftCorsair RMX White Series (2018)
| CorsairCorsair RM850x ShiftThis page | CorsairCorsair RMX White Series (2018) | |
|---|---|---|
| Overall score | 55 /100 | 55 /100 |
| Wattage | 850 W | 850 W |
| Efficiency rating | 80 | Gold |
| Form factor | ATX | — |
| Modular | Fully modular | Fully modular |
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 12v-2x6 / 12vhpwr, in which case a higher-tier power supplie is the better call.
Performance builder
Chasing frames and headroom in a high-end rig.
okay
Mainstream builder
Wants strong value in a balanced build.
good
Budget builder
Stretching every pound in an entry rig.
excellent
Common questions
Before you buy
Is the Corsair RM850x Shift worth it?
It depends on what you need. It scores 55/100 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 MSI MAG A850GLS?
The MSI MAG A850GLS scores 56/100 versus this one at 55/100, so it is the step up on the spec sheet.
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