Description
The Seasonic CORE GX-850 ATX 3 (2024) represents a significant update to the CORE series, bringing native support for the latest hardware power requirements. This 850W unit is fully compliant with ATX 3.1 and PCIe 5.1 specifications, ensuring it can handle the high transient power spikes associated with next-generation graphics cards. By utilizing Seasonic's innovative OptiSink design, the unit optimizes internal thermal management by improving airflow and heat dissipation compared to traditional heatsink layouts. The 120mm Fluid Dynamic Bearing (FDB) fan is managed by the S2FC Smart and Silent Fan Control system, which balances cooling performance with acoustic comfort.
This product is for:
- High-End Gamers: Designed for users running NVIDIA RTX 40-series or AMD RX 7000-series GPUs that require stable ATX 3.1 power delivery.
- Compact System Builders: The 140mm depth makes this unit ideal for mid-tower and small form factor cases where cable management space is limited.
- Workstation Professionals: Provides consistent 80 PLUS Gold certified efficiency for multi-core CPUs and intensive rendering tasks.
- Long-Term PC Enthusiasts: Backed by a 10-year warranty, this PSU is built for users who prioritize long-term reliability and component protection.
- Silent Build Seekers: The FDB fan and S2FC control ensure quiet operation during low-to-medium load scenarios.
Detailed specifications:
- Total Rated Power: 850 Watts
- Efficiency Certification: 80 PLUS Gold
- Compliance Standards: ATX 3.1, PCIe 5.1
- Dimensions: 140 mm (L) x 150 mm (W) x 86 mm (H)
- Cooling System: 120 mm Fluid Dynamic Bearing (FDB) Fan
- Cable Management: Fully Modular, Black braided pattern cables
- Protection Suite: OCP, OPP, OTP, OVP, SCP, UVP
- Operating Temperature: 0 - 50 °C (derating from 40 °C to 50 °C)
- MTBF: 100,000 hours at 25 °C (excluding fan)
Integrating the CORE GX-850 into a build is simplified by its fully modular cabling, allowing users to install only the necessary leads to maximize internal airflow. The 12V single rail architecture delivers up to 70A (840W), providing a robust power foundation for overclocked components. During operation, the S2FC fan control keeps the 120mm fan at low RPMs until higher loads are detected, maintaining a quiet environment. The inclusion of the OptiSink design not only improves reliability by reducing internal temperatures but also contributes to the unit's compact footprint, making it one of the most versatile 850W units in its class.
Compared to previous ATX 2.0 power supplies, the CORE GX-850 (2024) offers superior voltage regulation and the native 12V-2x6 connector required for modern high-wattage GPUs. While the Seasonic FOCUS series offers a larger fan and hybrid silent modes, the CORE GX series provides the same 80 PLUS Gold efficiency and 10-year warranty in a more cost-effective package. Its 140mm length gives it a compatibility advantage over larger 160mm or 180mm enthusiast-grade power supplies, fitting into a wider variety of modern chassis without obstructing drive cages.
Q&A:
How does ATX 3.1 benefit my gaming PC? ATX 3.1 is designed to handle power excursions (spikes) up to 200% of the rated power, preventing unexpected system shutdowns during intense gaming.
Is the 12V-2x6 cable included for new GPUs? Yes, this unit includes the native PCIe 5.1 12V-2x6 cable required for direct connection to modern high-performance graphics cards.
What is the advantage of the OptiSink design? OptiSink uses a more efficient internal layout that improves thermal dissipation by up to 50% compared to traditional designs, increasing component lifespan.
Can I use this PSU in a small form factor case? As long as the case supports standard ATX power supplies, the 140mm short-depth design makes it much easier to fit than standard-sized units.
What protections are included to keep my components safe? The unit includes a full suite of industrial-grade protections: Over Current (OCP), Over Power (OPP), Over Temperature (OTP), Over Voltage (OVP), Short Circuit (SCP), and Under Voltage (UVP).
