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be quiet! Power Zone 2 850W vs Corsair RM750e: Comparison
be quiet! Power Zone 2 850W vs Corsair RM750e: the wattage difference
The gap that matters here is wattage: be quiet! Power Zone 2 850W 850 W against Corsair RM750e 750 W, which puts be quiet! Power Zone 2 850W 12% ahead. Warranty runs the same way, 10 years on the be quiet! Power Zone 2 850W versus 7 years on the Corsair RM750e, another win for be quiet! Power Zone 2 850W.
be quiet! Power Zone 2 850W vs Corsair RM750e: which one fits your build
Take the be quiet! Power Zone 2 850W for buyers who specifically prioritize measured, independently-verified quiet operation. The Cybenetics A+ rating here is uniquely strong at this wattage tier. It is equally the pick for home theater PCs or quiet-room builds where any fan noise is noticeable. This unit is specifically engineered to minimize that concern. Avoid it for the tightest possible 850W budget. The Montech Century II, covered elsewhere on this site, delivers solid Gold-rated performance at a meaningfully lower price for buyers who don't need the acoustic advantage. Buy the Corsair RM750e for Quiet builds where fan-off idle and light-load silence matters and single RTX 5070 Ti-class GPU builds on a budget, though it is not built for RTX 5080 or 5090 builds, wattage isn't enough. It is not the one for RX 9070 XT builds needing 3 PCIe 8-pin connectors without checking cable count first.
Which is cheaper, be quiet! Power Zone 2 850W or Corsair RM750e?
The be quiet! Power Zone 2 850W asks 39% more, $125 against $89.99 for the Corsair RM750e.
Frequently asked questions
Do the be quiet! Power Zone 2 850W and Corsair RM750e differ on fan size?
Yes. Fan Size reads 140 mm on the be quiet! Power Zone 2 850W versus 120 mm on the Corsair RM750e.
Is the Modularity the same on the be quiet! Power Zone 2 850W and Corsair RM750e?
It is. Both are listed at Fully Modular, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- be quiet! Power Zone 2 850W
- be quiet!
- Corsair RM750e
- Corsair
Wattage
- be quiet! Power Zone 2 850W
- 850 WBest
- Corsair RM750e
- 750 W-12%
80 PLUS Rating
- be quiet! Power Zone 2 850W
- Platinum
- Corsair RM750e
- Gold
Model Number
- be quiet! Power Zone 2 850W
- Power Zone 2 850W
- Corsair RM750e
- CP-9020295-NA (black) / CP-9020292-NA (white)
ATX Standard
- be quiet! Power Zone 2 850W
- ATX 3.1
- Corsair RM750e
- ATX 3.1
Form Factor
- be quiet! Power Zone 2 850W
- ATX
- Corsair RM750e
- ATX
Single +12V Rail
- be quiet! Power Zone 2 850W
- Yes
- Corsair RM750e
- Yes
Cybenetics Efficiency
- be quiet! Power Zone 2 850W
- Platinum
- Corsair RM750e
- Gold
Cybenetics Noise
- be quiet! Power Zone 2 850W
- A+
- Corsair RM750e
- A
PCIe CEM Standard
- be quiet! Power Zone 2 850W
- PCIe 5.1
- Corsair RM750e
- PCIe 5.1
12V-2x6 Connectors
- be quiet! Power Zone 2 850W
- 1
- Corsair RM750e
- 1
Hold-Up Time
- be quiet! Power Zone 2 850W
- 21.1 ms
- Corsair RM750e
- 16.7 ms-21%
Zero-RPM Mode
- be quiet! Power Zone 2 850W
- Yes
- Corsair RM750e
- Yes
Sleeved Cables
- be quiet! Power Zone 2 850W
- Yes
- Corsair RM750e
- No
Connector Count
- be quiet! Power Zone 2 850W
- 1x 24-pin ATX, 1x EPS 4+4, 1x EPS 8-pin, 1x P4, 1x 12V-2x6 (600W), 3x PCIe 6+2-pin, 7x SATA, 1x Molex
- Corsair RM750e
- 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6, 6x SATA, 2x Molex
Fan Size
- be quiet! Power Zone 2 850W
- 140 mm
- Corsair RM750e
- 120 mm
Fan Model / Bearing
- be quiet! Power Zone 2 850W
- Pure Wings 3 140mm (BQ PUW3-14025-HR), rifle bearing
- Corsair RM750e
- Rifle
OEM / Platform
- be quiet! Power Zone 2 850W
- FSP
- Corsair RM750e
- HEC
EPS 8-pin Connectors
- be quiet! Power Zone 2 850W
- 2
- Corsair RM750e
- 2
SATA Connectors
- be quiet! Power Zone 2 850W
- 7
- Corsair RM750e
- 6
Molex Connectors
- be quiet! Power Zone 2 850W
- 1
- Corsair RM750e
- 2
Cable Lengths
- be quiet! Power Zone 2 850W
- ATX 590mm, EPS 700mm, PCIe 600mm, 12V-2x6 600mm, SATA 550+150+150+155mm and 500+150+150mm
- Corsair RM750e
- 24-pin 610mm, EPS 750-850mm, 12V-2x6 650mm
Length
- be quiet! Power Zone 2 850W
- 160 mm
- Corsair RM750e
- 140 mm
Colour
- be quiet! Power Zone 2 850W
- Black
- Corsair RM750e
- Black
MTBF
- be quiet! Power Zone 2 850W
- 100000 hours
- Corsair RM750e
- 100000 hours
Modularity
- be quiet! Power Zone 2 850W
- Fully Modular
- Corsair RM750e
- Fully Modular
Protections
- be quiet! Power Zone 2 850W
- OTP, OCP, OPP, SCP, OVP, UVP, SIP
- Corsair RM750e
- OCP, OVP, OPP, SCP, OTP, UVP
Price
- be quiet! Power Zone 2 850W
- 124.99 USD
- Corsair RM750e
- 89.99 USD
Warranty
- be quiet! Power Zone 2 850W
- 10 yearsBest
- Corsair RM750e
- 7 years-30%
Which one should you pick?
Choose be quiet! Power Zone 2 850W if you want the higher wattage (850 W vs 750 W), the higher 12V-2x6 connectors (1 vs 1) and the higher Hold-Up time (21.1 ms vs 16.7 ms).
Choose Corsair RM750e if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | be quiet! Power Zone 2 850W | Corsair RM750e |
|---|---|---|
| Amazon | $124.99 View on Amazon | $89.99 View on Amazon |
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
Corsair RM750e
8 / 10 Expert Rating
The quietest thing at this money by a real margin, but MSI gives you a better fan, more cables and three more years of warranty for five dollars.
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