Corsair RM850e
- Wattage:
- 850 W
- 80 PLUS Rating:
- Gold
- Modularity:
- Fully Modular
- ATX Standard:
- ATX 3.1
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Manufacturer: Corsair Last updated: 2026-09-15
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Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) Review
Searching for an 850W 80 PLUS Gold PSU with native ATX 3.1 support for a current-gen GPU, the Corsair RM850e is Corsair's mainstream e-series option at this wattage.
We'd recommend it for RTX 4070 Ti Super/4080-class builds that want one native 12V-2x6 cable without spending RM850x or HX850i money. It carries a Cybenetics Platinum efficiency badge despite being 80 PLUS Gold, so real-world efficiency is better than the sticker suggests.
Power Headroom
850W gives comfortable headroom for a single high-end GPU plus an overclocked Core i7/Ryzen 7 CPU. Zero-RPM keeps the fan off at idle and light load, and the 105C-rated capacitors are a step up from budget units.
Specifications
Identity
| Brand | Corsair |
|---|---|
| Model Number | RM850e |
Standards and compliance
| PCIe CEM Standard | PCIe 5.1 |
|---|
Connector inventory
| EPS 8-pin Connectors | 2 |
|---|---|
| SATA Connectors | 6 |
| Molex Connectors | 2 |
Form factor and fit
| Length | 140 mm |
|---|---|
| Colour | Black |
Cooling
| Fan Bearing | Rifle |
|---|
Build quality
| Topology | Resonant LLC with DC-DC conversion |
|---|---|
| MTBF | 100000 hours |
Cables
| Modularity | Fully Modular |
|---|
Monitoring, protection and price
| Price | 129.99 USD |
|---|---|
| Warranty | 7 years |
| Wattage | 850 W |
|---|---|
| 80 PLUS Rating | Gold |
| ATX Standard | ATX 3.1 |
| Form Factor | ATX |
| Cybenetics Efficiency | Gold |
| Cybenetics Noise | A |
| 12V-2x6 Connectors | 1 |
| Zero-RPM Mode | Yes |
| PCIe 8-pin Connectors | 3 |
| Connector Count | 1x 24-pin ATX, 2x EPS 8-pin (4+4), 1x 12V-2x6 (12+4), 3x PCIe 6+2-pin (1 single cable + 2 via 12V-2x6-to-dual-8-pin cable), 6x SATA, 2x Molex |
| Fan Size | 120 mm |
| Source URL | https://www.corsair.com/us/en/p/psu/cp-9020296-na/rme-series-rm850e-fully-modular-low-noise-atx-power-supply-cp-9020296-na |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- RTX 4070 Ti Super / 4080 builds
- Buyers wanting native 12V-2x6 at a mid-range price
- Systems needing quiet idle operation
Not for
- Dual-GPU or workstation loads
- Buyers wanting sleeved cables
- Anyone needing 2+ 12V-2x6 connectors
FAQs
What are the key specifications of the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6)?
The Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) is a power supply from Corsair. Key specs: Wattage 850, 80 PLUS Rating Gold, Cybenetics Efficiency Platinum, Modularity Fully Modular, ATX Standard ATX 3.1.
Will the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) work with my current setup?
The Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) lists Wattage is 850. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6) best suited to?
It suits rtx 4070 ti super / 4080 builds, buyers wanting native 12v-2x6 at a mid-range price, systems needing quiet idle operation.
What are the drawbacks of the Corsair RM850e (850W/80+ Gold/Fully Modular/ATX 3.1/Native 12V-2x6)?
It is a poor fit for dual-gpu or workstation loads, buyers wanting sleeved cables, anyone needing 2+ 12v-2x6 connectors.
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