Corsair
RM850x
A entry-level pick in the power supplies line-up, with 850 W up front.
51/100
850 WCybenetics GoldFully modularATX 3.1Black
£110best price at Amazon
In stock at 1 retailer
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Why we rate it
- 12V-2x6 / 12VHPWR
- Scores 51/100
- No zero rpm mode
- Below-average wattage
Score profile
Scored against the power supplies classWhere the RM850x wins and loses
Full specification
Grouped · supported features marked in blueSpecifications
Output
Wattage850 W
Efficiency ratingCybenetics Gold
ATX standardATX 3.1
Form factor and design
ModularFully modular
Weight1.77 kg
ColourBlack
Connectors
12V-2x6 / 12VHPWRYes
Head to head
Highlighted cell = better in that rowRM850x vs Corsair Corsair RM750x
RM850xCorsair RM750x
| CorsairRM850xThis page | CorsairCorsair RM750x | |
|---|---|---|
| Overall score | 51 /100Better | 44 /100 |
| Wattage | 850 WBetter | 750 W |
| Efficiency rating | Cybenetics Gold | Cybenetics Gold |
| Form factor | — | ATX |
| Modular | Fully modular | Fully modular |
Who it's for
Is the RM850x 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.
excellent
Common questions
Before you buy
Is the RM850x worth it?
It depends on what you need. It scores 51/100 against other power supplies, a entry-level result where the class average is around 58.
What stands out on the RM850x?
Its 12v-2x6 / 12vhpwr stands out, a genuinely useful feature if your setup calls for it.
How does it compare to the Cooler Master V850 SFX Gold 850W?
The Cooler Master V850 SFX Gold 850W scores 53/100 versus this one at 51/100, so it is the step up on the spec sheet.
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