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be quiet! Pure Power 12 M 750W vs Cooler Master GX III 750: Comparison
be quiet! Pure Power 12 M 750W vs Cooler Master GX III 750 fan size compared
The first real difference is fan size: be quiet! Pure Power 12 M 750W 120 mm against Cooler Master GX III 750 135 mm. Cooler Master GX III 750 also leads on pcie 8-pin connectors, 2 on the be quiet! Pure Power 12 M 750W versus 3 on the Cooler Master GX III 750.
Which should you buy, be quiet! Pure Power 12 M 750W or Cooler Master GX III 750?
Buy the be quiet! Pure Power 12 M 750W for anyone who wants fully modular cabling with native 12V-2x6 support and systems where a 5-year warranty and Gold-tier efficiency matter, though it is not the pick for builds needing more than 750W of continuous headroom and buyers who need the smallest possible SFX/SFX-L footprint. The same goes for builders targeting a popular RTX 4070 Ti / RTX 5070-class gaming build. The Cooler Master GX III 750 is the one to take for RTX 4070/4070 Ti builds wanting native ATX 3.1 and mainstream gaming rigs with a long-term warranty focus, though it is the wrong buy for high-wattage multi-GPU or workstation loads and SFX/small-form-factor builds. Our rating of the be quiet! Pure Power 12 M 750W (8.2/10): A solid 750W Gold-rated ATX unit for a popular RTX 4070 Ti / RTX 5070-class gaming build, held back only by the usual mid-tier compromises on cabling and OEM sourcing.
Where the two are identical
Where they agree, they agree completely, wattage, modularity, warranty, 80 plus rating and form factor included, so the decision does not turn on any of those. They match on 5 further specifications as well.
Frequently asked questions
Do the be quiet! Pure Power 12 M 750W and Cooler Master GX III 750 differ on atx standard?
Yes. ATX Standard reads ATX 3.0 on the be quiet! Pure Power 12 M 750W versus ATX 3.1 on the Cooler Master GX III 750.
Is the 12V-2x6 Connectors the same on the be quiet! Pure Power 12 M 750W and Cooler Master GX III 750?
It is. Both are listed at 1, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- be quiet! Pure Power 12 M 750W
- be quiet!
- Cooler Master GX III 750
- Cooler Master
Wattage
- be quiet! Pure Power 12 M 750W
- 750 W
- Cooler Master GX III 750
- 750 W
80 PLUS Rating
- be quiet! Pure Power 12 M 750W
- Gold
- Cooler Master GX III 750
- Gold
Model Number
- be quiet! Pure Power 12 M 750W
- Pure Power 12 M 750W
- Cooler Master GX III 750
- GX III 750
ATX Standard
- be quiet! Pure Power 12 M 750W
- ATX 3.0
- Cooler Master GX III 750
- ATX 3.1
Form Factor
- be quiet! Pure Power 12 M 750W
- ATX
- Cooler Master GX III 750
- ATX
Single +12V Rail
- be quiet! Pure Power 12 M 750W
- No
- Cooler Master GX III 750
- Yes
12V-2x6 Connectors
- be quiet! Pure Power 12 M 750W
- 1
- Cooler Master GX III 750
- 1
Zero-RPM Mode
- be quiet! Pure Power 12 M 750W
- No
- Cooler Master GX III 750
- Yes
Sleeved Cables
- be quiet! Pure Power 12 M 750W
- Yes
- Cooler Master GX III 750
- No
PCIe 8-pin Connectors
- be quiet! Pure Power 12 M 750W
- 2-33%
- Cooler Master GX III 750
- 3
Connector Count
- be quiet! Pure Power 12 M 750W
- 1x 24-pin ATX, 1x EPS 4+4, 1x EPS 8-pin, 1x 12VHPWR (600W), 2x PCIe 6+2-pin, 5x SATA, 2x Molex
- Cooler Master GX III 750
- 1x 24-pin ATX, 1x EPS 4+4, 1x EPS 8-pin, 1x 12V-2x6, 3x PCIe 6+2-pin, 8x SATA, 4x Molex
Fan Size
- be quiet! Pure Power 12 M 750W
- 120 mm
- Cooler Master GX III 750
- 135 mm
Fan Model / Bearing
- be quiet! Pure Power 12 M 750W
- 120mm rifle bearing
- Cooler Master GX III 750
- 135mm (Hong Hua HA13525H12F-Z)
EPS 8-pin Connectors
- be quiet! Pure Power 12 M 750W
- 2
- Cooler Master GX III 750
- 2
SATA Connectors
- be quiet! Pure Power 12 M 750W
- 5
- Cooler Master GX III 750
- 8
Molex Connectors
- be quiet! Pure Power 12 M 750W
- 2
- Cooler Master GX III 750
- 4
Length
- be quiet! Pure Power 12 M 750W
- 160 mm
- Cooler Master GX III 750
- 160 mm
Colour
- be quiet! Pure Power 12 M 750W
- Black
- Cooler Master GX III 750
- Black
MTBF
- be quiet! Pure Power 12 M 750W
- 100000 hours
- Cooler Master GX III 750
- 100000 hours
Modularity
- be quiet! Pure Power 12 M 750W
- Fully Modular
- Cooler Master GX III 750
- Fully Modular
Protections
- be quiet! Pure Power 12 M 750W
- OTP, OCP, OPP, SCP, OVP, UVP, SIP
- Cooler Master GX III 750
- OPP, OVP, OTP, OCP, SCP, UVP, Surge & Inrush
Price
- be quiet! Pure Power 12 M 750W
- 99.99 USD
- Cooler Master GX III 750
- 99.99 USD
Warranty
- be quiet! Pure Power 12 M 750W
- 10 years
- Cooler Master GX III 750
- 10 years
Which one should you pick?
Choose be quiet! Pure Power 12 M 750W if you want the higher wattage (750 W vs 750 W), the higher 12V-2x6 connectors (1 vs 1) and the higher MTBF (100000 hours vs 100000 hours).
Choose Cooler Master GX III 750 if you want the higher PCIe 8-pin connectors (3 vs 2).
Price comparison
| Retailer | be quiet! Pure Power 12 M 750W | Cooler Master GX III 750 |
|---|---|---|
| Consumercarts listing | $99.99 View on Consumercarts listing | |
| Amazon | $99.99 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 M 750W
8.2 / 10 Expert Rating
A solid 750W Gold-rated ATX unit for a popular RTX 4070 Ti / RTX 5070-class gaming build, held back only by the usual mid-tier compromises on cabling and OEM sourcing.
Cooler Master GX III 750
8.2 / 10 Expert Rating
A well-rounded 750W Gold ATX 3.1 unit with a strong warranty, right in step with the best in this wattage class.