Corsair RM850x Shift
850 W · Gold
be quiet! Dark Power Pro 13 1300W
1300W · 80+ Titanium · Silent
be quiet! Dark Power Pro 13 1300W takes it — here’s why.
In our weighted Specdex score, Corsair RM850x Shift lands at 90 and be quiet! Dark Power Pro 13 1300W at 92. That puts be quiet! Dark Power Pro 13 1300W ahead by 2 points — a narrow margin driven mostly by its strengths in the categories below.
Pick Corsair RM850x Shift if…
- ✓Modular cabling on most
- ✓ATX 3.1 / 12V-2x6 support
- ✓10-year warranty on many
Pick be quiet! Dark Power Pro 13 1300W if…
- ✓Quietest 1300W PSU
- ✓80+ Titanium efficiency
- ✓12-year warranty
Winner by scenario
Derived from the sub-score breakdown · not a separate testEfficiency
be quiet! Dark Power Pro 13 1300WCompared on the efficiency sub-score
be quiet! Dark Power Pro 13 1300W leads on efficiency (100 vs 90).
Value for money
Corsair RM850x ShiftSpecdex score per dollar at MSRP
Corsair RM850x Shift more score per dollar ($179 vs $449).
Score breakdown
Specs side-by-side
| Spec | Corsair RM850x Shift | be quiet! Dark Power Pro 13 1300W |
|---|---|---|
| Wattage | 850 W | 1300W |
| Efficiency | Gold | 80+ Titanium |
| Cooling | — | 135 mm Silent Wings (semi-passive) |
| Modular | — | Fully modular |
| 12VHPWR | — | Native cable included |
| Warranty | — | 12 years |
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! Dark Power Pro 13 1300W
- +Quietest 1300W PSU
- +80+ Titanium efficiency
- +12-year warranty
- −Premium pricing
- −Silent Wings 135 mm fan rare to source for replacement
- −Only one 12VHPWR cable included
FAQ: Corsair RM850x Shift vs be quiet! Dark Power Pro 13 1300W
Which is better, Corsair RM850x Shift or be quiet! Dark Power Pro 13 1300W? +
be quiet! Dark Power Pro 13 1300W scores 92 on our weighted rubric — ahead by 2. 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! Dark Power Pro 13 1300W worth the price? +
At $449, be quiet! Dark Power Pro 13 1300W delivers a Specdex score of 92 — strongest in efficiency.
Does Corsair RM850x Shift or be quiet! Dark Power Pro 13 1300W 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 RM850x Shift or be quiet! Dark Power Pro 13 1300W? +
be quiet! Dark Power Pro 13 1300W — leads on efficiency (100 vs 90). Compared on the efficiency sub-score.
Which is the better value, Corsair RM850x Shift or be quiet! Dark Power Pro 13 1300W? +
Corsair RM850x Shift — more score per dollar ($179 vs $449). Specdex score per dollar at MSRP.