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ASUS ROG Strix 850W Gold ATX3.0 vs Cooler Master GX III 750: Comparison
ASUS ROG Strix 850W Gold ATX3.0 vs Cooler Master GX III 750 wattage compared
Start with wattage, because it is the widest measured gap between them: ASUS ROG Strix 850W Gold ATX3.0 850 W against Cooler Master GX III 750 750 W, 12% in favour of ASUS ROG Strix 850W Gold ATX3.0. Add mtbf to that, 120000 hours on the ASUS ROG Strix 850W Gold ATX3.0 versus 100000 hours on the Cooler Master GX III 750, and the pattern holds.
Who each one is for
The ASUS ROG Strix 850W Gold ATX3.0 is the one to take for anyone who wants fully modular cabling with native 12V-2x6 support and systems where a 10-year warranty and Gold-tier efficiency matter, though it is the wrong buy for builds needing more than 850W of continuous headroom and buyers who need the smallest possible SFX/SFX-L footprint. It is equally the pick for builders targeting a popular RTX 4070 Ti / RTX 5070-class gaming build. Buy the Cooler Master GX III 750 for RTX 4070/4070 Ti builds wanting native ATX 3.1 and mainstream gaming rigs with a long-term warranty focus, though it is not the pick for high-wattage multi-GPU or workstation loads and SFX/small-form-factor builds.
What ASUS ROG Strix 850W Gold ATX3.0 and Cooler Master GX III 750 have in common
The common ground is wider than the gap: modularity, fan size, warranty, 80 plus rating and form factor are identical here. They match on 8 further specifications as well.
ASUS ROG Strix 850W Gold ATX3.0 vs Cooler Master GX III 750 price
Cost splits them too. Cooler Master GX III 750 sits at $99.99, ASUS ROG Strix 850W Gold ATX3.0 at $170, 70% more.
Frequently asked questions
Do the ASUS ROG Strix 850W Gold ATX3.0 and Cooler Master GX III 750 differ on atx standard?
Yes. ATX Standard reads ATX 3.0 on the ASUS ROG Strix 850W Gold ATX3.0 versus ATX 3.1 on the Cooler Master GX III 750.
Is the Single +12V Rail the same on the ASUS ROG Strix 850W Gold ATX3.0 and Cooler Master GX III 750?
It is. Both are listed at Yes, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- ASUS ROG Strix 850W Gold ATX3.0
- ASUS
- Cooler Master GX III 750
- Cooler Master
Wattage
- ASUS ROG Strix 850W Gold ATX3.0
- 850 WBest
- Cooler Master GX III 750
- 750 W-12%
80 PLUS Rating
- ASUS ROG Strix 850W Gold ATX3.0
- Gold
- Cooler Master GX III 750
- Gold
Model Number
- ASUS ROG Strix 850W Gold ATX3.0
- ROG Strix 850W Gold ATX3.0
- Cooler Master GX III 750
- GX III 750
ATX Standard
- ASUS ROG Strix 850W Gold ATX3.0
- ATX 3.0
- Cooler Master GX III 750
- ATX 3.1
Form Factor
- ASUS ROG Strix 850W Gold ATX3.0
- ATX
- Cooler Master GX III 750
- ATX
+12V Rail Amperage
- ASUS ROG Strix 850W Gold ATX3.0
- 70.8 A
- Cooler Master GX III 750
- 62.5 A
Single +12V Rail
- ASUS ROG Strix 850W Gold ATX3.0
- Yes
- Cooler Master GX III 750
- Yes
Cybenetics Efficiency
- ASUS ROG Strix 850W Gold ATX3.0
- Gold
- Cooler Master GX III 750
- Platinum
Cybenetics Noise
- ASUS ROG Strix 850W Gold ATX3.0
- A++
- Cooler Master GX III 750
- A-
12V-2x6 Connectors
- ASUS ROG Strix 850W Gold ATX3.0
- 1
- Cooler Master GX III 750
- 1
Zero-RPM Mode
- ASUS ROG Strix 850W Gold ATX3.0
- Yes
- Cooler Master GX III 750
- Yes
Sleeved Cables
- ASUS ROG Strix 850W Gold ATX3.0
- No
- Cooler Master GX III 750
- No
Measured Avg Efficiency
- ASUS ROG Strix 850W Gold ATX3.0
- 88.84 %
- Cooler Master GX III 750
- 89.9 %Best
PCIe 8-pin Connectors
- ASUS ROG Strix 850W Gold ATX3.0
- 3
- Cooler Master GX III 750
- 3
Measured Average Noise
- ASUS ROG Strix 850W Gold ATX3.0
- 14.69 dBABest
- Cooler Master GX III 750
- 29.52 dBA
Connector Count
- ASUS ROG Strix 850W Gold ATX3.0
- 1x 24-pin ATX, 2x EPS 4+4, 1x PCIe 16-pin, 3x PCIe 6+2-pin, 5x SATA, 4x 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
- ASUS ROG Strix 850W Gold ATX3.0
- 135 mm
- Cooler Master GX III 750
- 135 mm
Fan Model / Bearing
- ASUS ROG Strix 850W Gold ATX3.0
- 135mm double ball bearing (CF1325H12D), Axial-tech
- Cooler Master GX III 750
- 135mm (Hong Hua HA13525H12F-Z)
EPS 8-pin Connectors
- ASUS ROG Strix 850W Gold ATX3.0
- 2
- Cooler Master GX III 750
- 2
SATA Connectors
- ASUS ROG Strix 850W Gold ATX3.0
- 5
- Cooler Master GX III 750
- 8
Molex Connectors
- ASUS ROG Strix 850W Gold ATX3.0
- 4
- Cooler Master GX III 750
- 4
Cable Lengths
- ASUS ROG Strix 850W Gold ATX3.0
- ATX 600mm, EPS 650mm, 16-pin 600mm, PCIe 600-610mm, SATA 400+120+120mm, Molex 400+150+150+150mm
- Cooler Master GX III 750
- 24-pin 610mm, EPS 600mm, PCIe 550mm, 12V-2x6 650mm, SATA 500+120+120+120mm, Molex 500+120+120+120mm
Length
- ASUS ROG Strix 850W Gold ATX3.0
- 180 mm
- Cooler Master GX III 750
- 160 mm
Colour
- ASUS ROG Strix 850W Gold ATX3.0
- Black
- Cooler Master GX III 750
- Black
MTBF
- ASUS ROG Strix 850W Gold ATX3.0
- 120000 hours
- Cooler Master GX III 750
- 100000 hours-17%
Modularity
- ASUS ROG Strix 850W Gold ATX3.0
- Fully Modular
- Cooler Master GX III 750
- Fully Modular
Protections
- ASUS ROG Strix 850W Gold ATX3.0
- OPP, OVP, UVP, SCP, OCP, OTP
- Cooler Master GX III 750
- OPP, OVP, OTP, OCP, SCP, UVP, Surge & Inrush
Price
- ASUS ROG Strix 850W Gold ATX3.0
- 169.99 USD
- Cooler Master GX III 750
- 99.99 USD
Warranty
- ASUS ROG Strix 850W Gold ATX3.0
- 10 years
- Cooler Master GX III 750
- 10 years
Which one should you pick?
Choose ASUS ROG Strix 850W Gold ATX3.0 if you want the higher wattage (850 W vs 750 W), the higher 12V-2x6 connectors (1 vs 1) and the higher PCIe 8-pin connectors (3 vs 3).
Choose Cooler Master GX III 750 if you already have it on hand or find it at a lower price.
Price comparison
| Retailer | ASUS ROG Strix 850W Gold ATX3.0 | Cooler Master GX III 750 |
|---|---|---|
| Amazon | $169.99 View on 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
ASUS ROG Strix 850W Gold ATX3.0
8.3 / 10 Expert Rating
A solid 850W 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.