Corsair RM850x Shift
850 W · Gold
be quiet! Straight Power 12 850W
850 W · Platinum
Dead heat — it comes down to priorities.
In our weighted Specdex score, Corsair RM850x Shift lands at 90 and be quiet! Straight Power 12 850W at 90. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Corsair RM850x Shift if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
Pick be quiet! Straight Power 12 850W if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
Winner by scenario
Derived from the sub-score breakdown · not a separate testEfficiency
TieCompared on the efficiency sub-score
Effectively tied — neither pulls a 2-point weighted lead.
Noise
TieCompared on the noise sub-score
Effectively tied — neither pulls a 2-point weighted lead.
Cables
TieCompared on the cables sub-score
Effectively tied — neither pulls a 2-point weighted lead.
Value for money
Corsair RM850x ShiftSpecdex score per dollar at MSRP
Corsair RM850x Shift more score per dollar ($179 vs $199).
Score breakdown
Specs side-by-side
| Spec | Corsair RM850x Shift | be quiet! Straight Power 12 850W |
|---|---|---|
| Wattage | 850 W | 850 W |
| Efficiency | Gold | Platinum |
Corsair RM850x Shift
- +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
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
FAQ: Corsair RM850x Shift vs be quiet! Straight Power 12 850W
Which is better, Corsair RM850x Shift or be quiet! Straight Power 12 850W? +
Both score 90 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Corsair RM850x Shift worth the price? +
At $179, Corsair RM850x Shift delivers a Specdex score of 90 — strongest in efficiency.
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.
Does Corsair RM850x Shift or be quiet! Straight Power 12 850W 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 the better value, Corsair RM850x Shift or be quiet! Straight Power 12 850W? +
Corsair RM850x Shift — more score per dollar ($179 vs $199). Specdex score per dollar at MSRP.