Description
The Cooler Master GX II Gold 850W represents a significant leap in power delivery, engineered to meet the rigorous demands of modern high-performance computing. Built on the ATX 3.1 architecture, this unit provides enhanced stability and power excursion capabilities required by the latest PCIe 5.1 hardware. With an 80 PLUS Gold certification, it guarantees 90% efficiency under typical loads, reducing heat waste and electricity costs. The inclusion of a native 12V-2x6 cable ensures a secure, high-wattage connection for high-end graphics cards without the need for cumbersome adapters.
This product is for:
- Enthusiast Gamers: Ideal for those utilizing NVIDIA RTX 40-series or upcoming 50-series GPUs requiring high-wattage 12V-2x6 support.
- Silent PC Builders: Perfect for users who prioritize low noise levels, thanks to the Zero-RPM mode that keeps the fan idle during low-load tasks.
- Professional Content Creators: Provides stable, ripple-free power for multi-core CPUs and heavy rendering workloads.
- System Integrators: The full modularity and flat cables simplify cable management in compact or complex chassis designs.
- Long-term Investors: Backed by a 10-year warranty, this PSU is designed for users who want a reliable component that outlasts multiple upgrade cycles.
Detailed specifications:
- Form Factor: ATX 12V Ver. 3.1 with Active PFC
- Efficiency Rating: 80 PLUS Gold Certified (90% Typical Load)
- Cooling System: 120mm Hydro Dynamic Bearing (HDB) Fan with 2500 RPM max speed
- Modular Design: Full Modular with flat black cables
- Dimensions: 160 x 150 x 86 mm (L x W x H)
- Protection Mechanisms: OVP, OPP, SCP, OCP, UVP, OTP, Surge, and Inrush Protection
- Connectors: 1x 24-pin, 2x 8-pin EPS, 1x 12V-2x6 (PCIe 5.1), 4x PCIe 6+2-pin, 6x SATA, 2x Peripheral 4-pin
Operating the GX II Gold is a seamless experience characterized by thermal efficiency and acoustic comfort. The 120mm HDB fan utilizes an advanced oil-retaining design that minimizes friction, extending the lifespan of the bearing while maintaining a whisper-quiet profile. During standard productivity or web browsing, the fan remains completely stationary. When the system enters high-load gaming or rendering states, the fan scales smoothly to dissipate heat without aggressive noise spikes. The 160mm depth ensures compatibility with most mid-tower cases, providing ample room for cable routing behind the motherboard tray.
Compared to traditional ATX 2.4 power supplies, the GX II Gold ATX 3.1 offers superior transient response, handling power spikes up to 200% of the rated wattage. While older units rely on 8-pin to 16-pin adapters that can lead to thermal issues, the GX II includes a reinforced 12V-2x6 connector designed for better contact and lower operating temperatures. It sits as a more future-proof alternative to the original GX Gold series, offering the updated safety protocols and connector standards necessary for the next decade of hardware evolution.
What is the difference between ATX 3.0 and ATX 3.1 in this PSU?
ATX 3.1 improves upon the previous standard by introducing the 12V-2x6 connector, which features shorter sense pins to ensure the cable is fully seated before delivering high power, significantly increasing safety over the older 12VHPWR design.
Does the GX II Gold 850W support the NVIDIA RTX 4090?
Yes, the unit includes a native 12V-2x6 PCIe 5.1 cable capable of delivering the high wattage required by the RTX 4090 and other high-TDP graphics cards without using adapters.
How does the Zero-RPM fan mode work?
The fan is programmed to remain off when the power load is below a certain threshold or when internal temperatures are low. It will only spin up when necessary, ensuring silent operation during light use.
Is this power supply compatible with older motherboards?
Yes, it features standard 24-pin ATX and 8-pin EPS connectors, making it fully backward compatible with older motherboard generations while providing modern power standards for the GPU.
Q&A:
What does the 10-year warranty cover?
The 10-year warranty covers manufacturing defects and component failures under normal operating conditions, reflecting Cooler Master's confidence in the unit's high-quality Japanese capacitors and internal build.
