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be quiet! Pure Power 12 550W vs Corsair RM750e: Comparison
be quiet! Pure Power 12 550W vs Corsair RM750e: the wattage difference
The gap that matters here is wattage: be quiet! Pure Power 12 550W 550 W against Corsair RM750e 750 W, which puts Corsair RM750e 27% ahead. Add warranty to that, 10 years on the be quiet! Pure Power 12 550W versus 7 years on the Corsair RM750e, and the pattern holds.
Which should you buy, be quiet! Pure Power 12 550W or Corsair RM750e?
The be quiet! Pure Power 12 550W is the one to take for Quiet mainstream gaming builds and RTX 4060/RX 7600-class GPUs, though it is not built for anyone wanting fully modular cables and high-end or multi-GPU builds. The Corsair RM750e suits 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 the pick for RTX 5080 or 5090 builds, wattage isn't enough. It is the wrong buy for RX 9070 XT builds needing 3 PCIe 8-pin connectors without checking cable count first. Our rating of the be quiet! Pure Power 12 550W (7.8/10): A quiet, Gold-rated 550W unit that's the right call for mainstream builds that don't need full modularity.
Where the two are identical
The common ground is wider than the gap: fan size, 80 plus rating, atx standard, form factor and single +12v rail are identical here. They match on 5 further specifications as well.
Which is cheaper, be quiet! Pure Power 12 550W or Corsair RM750e?
At the last price check the be quiet! Pure Power 12 550W was $74.99 and the Corsair RM750e $89.99, a 20% premium.
Frequently asked questions
Do the be quiet! Pure Power 12 550W and Corsair RM750e differ on hold-up time?
Yes. Hold-Up Time reads 16.6 ms on the be quiet! Pure Power 12 550W versus 16.7 ms on the Corsair RM750e.
Is the PCIe CEM Standard the same on the be quiet! Pure Power 12 550W and Corsair RM750e?
It is. Both are listed at PCIe 5.1, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- be quiet! Pure Power 12 550W
- be quiet!
- Corsair RM750e
- Corsair
Wattage
- be quiet! Pure Power 12 550W
- 550 W-27%
- Corsair RM750e
- 750 WBest
80 PLUS Rating
- be quiet! Pure Power 12 550W
- Gold
- Corsair RM750e
- Gold
Model Number
- be quiet! Pure Power 12 550W
- Pure Power 12 550W
- Corsair RM750e
- CP-9020295-NA (black) / CP-9020292-NA (white)
ATX Standard
- be quiet! Pure Power 12 550W
- ATX 3.1
- Corsair RM750e
- ATX 3.1
Form Factor
- be quiet! Pure Power 12 550W
- ATX
- Corsair RM750e
- ATX
Single +12V Rail
- be quiet! Pure Power 12 550W
- Yes
- Corsair RM750e
- Yes
PCIe CEM Standard
- be quiet! Pure Power 12 550W
- PCIe 5.1
- Corsair RM750e
- PCIe 5.1
12V-2x6 Connectors
- be quiet! Pure Power 12 550W
- 1
- Corsair RM750e
- 1
Hold-Up Time
- be quiet! Pure Power 12 550W
- 16.6 ms-1%
- Corsair RM750e
- 16.7 ms
Zero-RPM Mode
- be quiet! Pure Power 12 550W
- No
- Corsair RM750e
- Yes
Sleeved Cables
- be quiet! Pure Power 12 550W
- Yes
- Corsair RM750e
- No
Connector Count
- be quiet! Pure Power 12 550W
- 1x 24-pin ATX, 1x EPS 4+4, 1x 12V-2x6, 2x PCIe 6+2-pin, 5x SATA, 1x Molex (all fixed)
- Corsair RM750e
- 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6, 6x SATA, 2x Molex
Fan Size
- be quiet! Pure Power 12 550W
- 120 mm
- Corsair RM750e
- 120 mm
Fan Model / Bearing
- be quiet! Pure Power 12 550W
- 120mm be quiet! fan, rifle bearing
- Corsair RM750e
- Rifle
OEM / Platform
- be quiet! Pure Power 12 550W
- HEC
- Corsair RM750e
- HEC
EPS 8-pin Connectors
- be quiet! Pure Power 12 550W
- 1
- Corsair RM750e
- 2
SATA Connectors
- be quiet! Pure Power 12 550W
- 5
- Corsair RM750e
- 6
Molex Connectors
- be quiet! Pure Power 12 550W
- 1
- Corsair RM750e
- 2
Cable Lengths
- be quiet! Pure Power 12 550W
- 24-pin 600mm, max cable length 550mm
- Corsair RM750e
- 24-pin 610mm, EPS 750-850mm, 12V-2x6 650mm
Length
- be quiet! Pure Power 12 550W
- 160 mm
- Corsair RM750e
- 140 mm
Colour
- be quiet! Pure Power 12 550W
- Black
- Corsair RM750e
- Black
MTBF
- be quiet! Pure Power 12 550W
- 100000 hours
- Corsair RM750e
- 100000 hours
Modularity
- be quiet! Pure Power 12 550W
- Non-Modular
- Corsair RM750e
- Fully Modular
Protections
- be quiet! Pure Power 12 550W
- OTP, OCP, OPP, SCP, OVP, UVP, SIP
- Corsair RM750e
- OCP, OVP, OPP, SCP, OTP, UVP
Price
- be quiet! Pure Power 12 550W
- 74.99 USD
- Corsair RM750e
- 89.99 USD
Warranty
- be quiet! Pure Power 12 550W
- 10 yearsBest
- Corsair RM750e
- 7 years-30%
Which one should you pick?
Choose be quiet! Pure Power 12 550W if you want the higher 12V-2x6 connectors (1 vs 1), the higher MTBF (100000 hours vs 100000 hours) and the higher warranty (10 years vs 7 years).
Choose Corsair RM750e if you want the higher wattage (750 W vs 550 W) and the higher Hold-Up time (16.7 ms vs 16.6 ms).
Price comparison
| Retailer | be quiet! Pure Power 12 550W | Corsair RM750e |
|---|---|---|
| Amazon | $74.99 View on Amazon | $89.99 View on Amazon |
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
be quiet! Pure Power 12 550W
7.8 / 10 Expert Rating
A quiet, Gold-rated 550W unit that's the right call for mainstream builds that don't need full modularity.
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.