Corsair RM850e
850W · 80+ Gold · 12VHPWR
EcoFlow River 2
Portable power station · 2022
Corsair RM850e takes it — here’s why.
In our weighted Specdex score, Corsair RM850e lands at 89 and EcoFlow River 2 at 82. That puts Corsair RM850e ahead by 7 points — a decisive margin driven mostly by its strengths in the categories below.
Pick Corsair RM850e if…
- ✓Sub-$150 12VHPWR-ready PSU
- ✓80+ Gold + Cybenetics Gold
- ✓7-year warranty
Pick EcoFlow River 2 if…
- ✓LiFePO4 chemistry on modern SKUs (4000+ cycles)
- ✓Solar input
- ✓Multiple AC/DC/USB-C outputs
Winner by scenario
Derived from the sub-score breakdown · not a separate testEfficiency
Corsair RM850eCompared on the efficiency sub-score
Corsair RM850e leads on efficiency (92 vs 77).
Value for money
Corsair RM850eSpecdex score per dollar at MSRP
Corsair RM850e more score per dollar ($139 vs $249).
Score breakdown
Specs side-by-side
| Spec | Corsair RM850e | EcoFlow River 2 |
|---|---|---|
| Wattage | 850W | — |
| Efficiency | 80+ Gold | — |
| Cooling | 120 mm rifle-bearing fan | — |
| Modular | Fully modular | — |
| 12VHPWR | 1× 600W native | — |
| Warranty | 7 years | — |
| Type | — | Portable power station |
| Release year | — | 2022 |
Corsair RM850e
- +Sub-$150 12VHPWR-ready PSU
- +80+ Gold + Cybenetics Gold
- +7-year warranty
- −Single-rail design (mostly fine)
- −Cables ribbon-flat (some prefer round)
- −No iCUE Link
EcoFlow River 2
- +LiFePO4 chemistry on modern SKUs (4000+ cycles)
- +Solar input
- +Multiple AC/DC/USB-C outputs
- −Heavy
- −Pricey per Wh
- −Shipping restrictions (Li-ion)
FAQ: Corsair RM850e vs EcoFlow River 2
Which is better, Corsair RM850e or EcoFlow River 2? +
Corsair RM850e scores 89 on our weighted rubric — ahead by 7. Your best pick depends on the sub-scores above.
Is Corsair RM850e worth the price? +
At $139, Corsair RM850e delivers a Specdex score of 89 — strongest in value.
Is EcoFlow River 2 worth the price? +
At $249, EcoFlow River 2 delivers a Specdex score of 82 — strongest in cables.
Does Corsair RM850e or EcoFlow River 2 last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is better for efficiency, Corsair RM850e or EcoFlow River 2? +
Corsair RM850e — leads on efficiency (92 vs 77). Compared on the efficiency sub-score.
Which is the better value, Corsair RM850e or EcoFlow River 2? +
Corsair RM850e — more score per dollar ($139 vs $249). Specdex score per dollar at MSRP.