Corsair
RM850i
A solid mid-range pick in the power supplies line-up, with Gold up front.
55/100
GoldFully modular
£401best price at Amazon
In stock at 1 retailer
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Why we rate it
- Above-average fan size
- Scores 55/100
- No zero rpm mode
- No 12v-2x6 / 12vhpwr
Score profile
Scored against the power supplies classWhere the RM850i wins and loses
Full specification
Grouped · supported features marked in blueSpecifications
Output
Efficiency ratingGold
Form factor and design
ModularFully modular
Cooling and noise
Fan size135 mm
Who it's for
Is the RM850i 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 zero rpm mode, 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.
good
Common questions
Before you buy
Is the RM850i 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 RM850i?
Its fan size stands out, and more is better here, so a higher figure is the stronger pick.
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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