Cooler Master GX III 750
Expert rating8.2 / 10
- Wattage:
- 750 W
- 80 PLUS Rating:
- Gold
- Modularity:
- Fully Modular
- ATX Standard:
- ATX 3.1
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Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Manufacturer: Cooler Master Last updated: 2026-09-12
Where to buy
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Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier) Review
If the Cooler Master V850 SFX Gold or GX3 850W already in this catalog are more wattage than you need, the Cooler Master GX III 750 brings the same ATX 3.1 platform down to a 750W mainstream tier.
We'd point RTX 4070-class builders here for the native 12V-2x6 cable and Zero RPM mode without paying for the 850W GX3's extra headroom. Cooler Master's 10-year warranty on this line is a nice bonus over most direct competitors.
ATX 3.1 Compliance
The GX III platform is built to the ATX 3.1 spec, meaning it's tested to handle the transient power spikes modern GPUs pull for microsecond bursts, and it ships with a native 12V-2x6 cable rather than relying on an adapter.
Comparison to Alternatives
Against the Cooler Master GX3 850W already in the catalog, the GX III 750 trades 100W of headroom for a lower price on the same ATX 3.1 platform and warranty terms. Against the Corsair RM750e, the GX III 750 matches the native 12V-2x6 connector and adds two extra years of warranty coverage.
Specifications
Identity
| Brand | Cooler Master |
|---|---|
| Model Number | GX III 750 |
Output and rails
| +12V Rail Amperage | 62.5 A |
|---|---|
| Single +12V Rail | Yes |
Efficiency and noise
| Measured Avg Efficiency | 89.9 % |
|---|---|
| Measured Average Noise | 29.52 dBA |
Connector inventory
| EPS 8-pin Connectors | 2 |
|---|---|
| SATA Connectors | 8 |
| Molex Connectors | 4 |
Form factor and fit
| Length | 160 mm |
|---|---|
| Colour | Black |
Build quality
| MTBF | 100000 hours |
|---|
Cables
| Modularity | Fully Modular |
|---|
Monitoring, protection and price
| Protections | OPP, OVP, OTP, OCP, SCP, UVP, Surge & Inrush |
|---|---|
| Price | 99.99 USD |
| Warranty | 10 years |
| Wattage | 750 W |
|---|---|
| 80 PLUS Rating | Gold |
| ATX Standard | ATX 3.1 |
| Form Factor | ATX |
| Cybenetics Efficiency | Platinum |
| Cybenetics Noise | A- |
| 12V-2x6 Connectors | 1 |
| Zero-RPM Mode | Yes |
| Sleeved Cables | No |
| PCIe 8-pin Connectors | 3 |
| Connector Count | 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 | 135 mm |
| Fan Model / Bearing | 135mm (Hong Hua HA13525H12F-Z) |
| Cable Lengths | 24-pin 610mm, EPS 600mm, PCIe 550mm, 12V-2x6 650mm, SATA 500+120+120+120mm, Molex 500+120+120+120mm |
| Source URL | https://www.coolermaster.com/en-global/products/gx-iii-gold-750-atx-3-1.html |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating8.2 / 10
A well-rounded 750W Gold ATX 3.1 unit with a strong warranty, right in step with the best in this wattage class.
Best for
- RTX 4070/4070 Ti builds wanting native ATX 3.1
- Mainstream gaming rigs with a long-term warranty focus
- Cooler Master-themed builds
Not for
- High-wattage multi-GPU or workstation loads
- SFX/small-form-factor builds
- Buyers wanting sleeved cables stock
FAQs
What are the key specifications of the Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier)?
The Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier) is a power supply from Cooler Master. Key specs: Wattage 750 W, 80 PLUS Rating Gold, Cybenetics Efficiency Gold, Cybenetics Noise A-, Modularity Fully Modular.
Will the Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier) work with my current setup?
The Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier) lists Wattage is 750 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier) best suited to?
It suits rtx 4070/4070 ti builds wanting native atx 3.1, mainstream gaming rigs with a long-term warranty focus, cooler master-themed builds.
What are the drawbacks of the Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier)?
It is a poor fit for high-wattage multi-gpu or workstation loads, sfx/small-form-factor builds, buyers wanting sleeved cables stock.
Compare and read more
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- Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier) vs Cooler Master GX III 750 (750W/80+ Gold/Fully Modular/ATX 3.1/Mainstream Gaming Tier)