be quiet! Straight Power 12 850W
850 W · Platinum
EcoFlow River 2
Portable power station · 2022
be quiet! Straight Power 12 850W takes it — here’s why.
In our weighted Specdex score, be quiet! Straight Power 12 850W lands at 90 and EcoFlow River 2 at 82. That puts be quiet! Straight Power 12 850W ahead by 8 points — a decisive margin driven mostly by its strengths in the categories below.
Pick be quiet! Straight Power 12 850W if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
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 testCables
EcoFlow River 2Compared on the cables sub-score
EcoFlow River 2 leads on cables (90 vs 86).
Noise
TieCompared on the noise sub-score
Effectively tied — neither pulls a 2-point weighted lead.
Efficiency
be quiet! Straight Power 12 850WCompared on the efficiency sub-score
be quiet! Straight Power 12 850W leads on efficiency (90 vs 77).
Value for money
be quiet! Straight Power 12 850WSpecdex score per dollar at MSRP
be quiet! Straight Power 12 850W more score per dollar ($199 vs $249).
Score breakdown
Specs side-by-side
| Spec | be quiet! Straight Power 12 850W | EcoFlow River 2 |
|---|---|---|
| Wattage | 850 W | — |
| Efficiency | Platinum | — |
| Type | — | Portable power station |
| Release year | — | 2022 |
be quiet! Straight Power 12 850W
- +Modular cabling on most
- +ATX 3.1 / 12V-2x6 support
- +10-year warranty on many
- −Bulky on higher wattages
- −Fan noise varies by load
- −Cable length may not fit some cases
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: be quiet! Straight Power 12 850W vs EcoFlow River 2
Which is better, be quiet! Straight Power 12 850W or EcoFlow River 2? +
be quiet! Straight Power 12 850W scores 90 on our weighted rubric — ahead by 8. Your best pick depends on the sub-scores above.
Is be quiet! Straight Power 12 850W worth the price? +
At $199, be quiet! Straight Power 12 850W delivers a Specdex score of 90 — strongest in efficiency.
Is EcoFlow River 2 worth the price? +
At $249, EcoFlow River 2 delivers a Specdex score of 82 — strongest in cables.
Does be quiet! Straight Power 12 850W 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 cables, be quiet! Straight Power 12 850W or EcoFlow River 2? +
EcoFlow River 2 — leads on cables (90 vs 86). Compared on the cables sub-score.
Which is better for efficiency, be quiet! Straight Power 12 850W or EcoFlow River 2? +
be quiet! Straight Power 12 850W — leads on efficiency (90 vs 77). Compared on the efficiency sub-score.