MSI High end
Check on Amazon MPG X870E Carbon WiFi
$370–$409
X870E platform match
Corsair RM850 (2021)
- Brand
- Corsair
- Model
- RM850
- UPC
- 840006631163
Corsair RM850 (2021) is a fully modular 850W 80+ Gold ATX PSU for quiet high-end builds, with triple EPS and no native 12VHPWR (pre‑ATX 3.0).
TierHigh end?GixCore tierWhat a part was built to do — not what it costs.EntryBudgetMainstreamHigh endEnthusiastFlagship A part can be cheap because it is an ageing flagship, or because it is a current entry-level model. The tier tells you which.
Released2021
As an Amazon Associate, GixCore earns from qualifying purchases.Pricing note?This range is based on our last recorded catalog price and is not a quote. Check Amazon for the current price.
Wattage850 W
Efficiency80 + Gold
Form factorATX
ModularYes
GixCore Editorial
Product overview
Corsair’s RM850 belongs to the RM Series (2021 refresh) introduced in 2021. It’s an 850 W, 80 PLUS Gold, fully modular ATX unit with a 140 mm rifle‑bearing fan and a Zero RPM mode. The design follows ATX12V v2.4 and ships with PCIe 6+2‑pin leads only—no native 12VHPWR or ATX 3.0/3.1 compliance.
On our scale it’s high_end: a Gold, fully modular PSU built to power today’s single high‑end GPUs and multi‑connector motherboards quietly and efficiently. It’s a good fit for mid-range gaming and many high-end GPU builds with headroom/overclocking in standard ATX cases. Notable: it includes three EPS12V (CPU 8‑pin) cables for boards that need them.
Best for
Official product specifications - mid-range gaming
- high-end GPU builds
- headroom/overclocking
Pairing fit
Compatible Motherboards
Compatible options ranked for this part's performance class.
Asus High end
Check on Amazon ROG Strix X870-A Gaming WiFi
$259–$286
X870 platform match
Gigabyte High end
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$199–$220
X870 platform match
MSI High end
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$218–$241
Z790 platform match
ASUS High end
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$123–$136
Z790 platform match
ASUS High end
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$475–$525
Z790 platform matchBudget pairings6 lower-tier compatible options
Gigabyte Mainstream
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$160–$176
B850 platform match
MSI Mainstream
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$129–$143
B760 platform match
MSI Mainstream
Check on Amazon PRO B760-P WiFi DDR4
$132–$146
B760 platform match
ASUS Mainstream
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$150–$166
B760 platform match
Gigabyte Mainstream
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$209–$231
B650 platform match
ASRock Mainstream
Check on Amazon B650M Pro RS
$94–$104
B650 platform matchPairing fit
Compatible Cases
Compatible options ranked for this part's performance class.
Montech High end
Check on Amazon King 95 PRO White
$161–$177
ATX motherboard fit
be quiet! High end
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$231–$256
ATX motherboard fit
Cooler Master Flagship
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$533–$589
ATX motherboard fit
Cooler Master Flagship
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$557–$616
ATX motherboard fit
Zalman Flagship
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$950–$1,050
ATX motherboard fitBudget pairings6 lower-tier compatible options
Lian Li Mainstream
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$85–$94
mATX motherboard fit
CORSAIR Mainstream
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$190–$210
mATX motherboard fit
Corsair Mainstream
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$161–$178
ATX motherboard fit
Cooler Master Mainstream
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$199–$220
ATX motherboard fit
MSI Mainstream
Check on Amazon MPG GUNGNIR 110R Black
$170–$187
ATX motherboard fit
LIAN LI Mainstream
Check on Amazon O11D MINI V2 Flow Black
$95–$105
ATX motherboard fitSpecifications
At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit.Measured against the power supplies catalog
Current modelCatalog models
Wattage850 W
Higher than 73% of power supplies
- Wattage
- 850 W
- Efficiency
- 80 + Gold
- Modular
- Yes
- Eco Mode
- No
- Form factor
- ATX