Seasonic CORE GX V4 850W 80 PLUS Gold ATX 3.1 Modular PSU with 120mm FDB Fan

The Seasonic CORE GX 850W is a fully modular ATX 3.1 power supply designed for modern gaming PCs, workstations and performance systems. With 80 PLUS Gold certification, PCIe 5.1 support and native 12V-2x6 connectivity, it provides efficient and future-ready power delivery. Seasonic's OptiSink thermal design improves heat dissipation and airflow, while the 120mm Hydro Dynamic Bearing fan with Smart and Silent Fan Control balances effective cooling with low operating noise. Its compact 140mm chassis and black braided-pattern modular cables make it ideal for clean, modern system builds.

Key Features
80 PLUS Gold (90% efficiency at 50% system load).
ATX 3.1 and PCIe 5.1 support.
Native 12V-2x6 connectivity for modern graphics cards.
Fully Modular cable design.
120mm Hydro Dynamic Bearing (HDB) fan.
Smart and Silent Fan Control (S²FC).
Seasonic OptiSink thermal design for improved heat dissipation.
Comprehensive OCP, OPP, OTP, OVP, SCP and UVP protection.
7-year manufacturer's warranty.

Full Specification
Model:
CORE GX 850W ATX 3.1

Manufacturer Part Number:
SRP-CGX851-A5A32SF

Output Power:
850W continuous power

Efficiency:
80 PLUS Gold (90% efficiency at 50% system load)

Voltage Rails:
Single +12V rail

+12V Output:
70A / 840W

ATX Form Factor:
ATX/EPS

ATX Standard:
ATX 3.1

PCIe Standard:
PCIe 5.1

Cabling:
Fully Modular

Connectors:
1 x 20+4-pin ATX
2 x 4+4-pin CPU/EPS
1 x 12V-2x6 (12+4-pin)
3 x 6+2-pin PCIe
6 x SATA
3 x 4-pin Molex

Fan:
120mm Hydro Dynamic Bearing (HDB) fan

Fan Speed Control:
Smart and Silent Fan Control (S²FC)

Power Input:
100-240V AC, 50/60Hz

Operating Temperature:
0-50°C

Power Output:
DC outputs: +12V, +5V, +3.3V, -12V and +5VSB

Cable Set:
Individual black cables with braided pattern

Protection:
OCP - Over Current Protection
OPP - Over Power Protection
OTP - Over Temperature Protection
OVP - Over Voltage Protection
SCP - Short Circuit Protection
UVP - Under Voltage Protection

Special Features:
Seasonic OptiSink thermal design, native PCIe 5.1 12V-2x6 connectivity, compact 140mm chassis

Warranty:
7-year manufacturer's warranty

Dimensions without cable (L x W x H), (mm)
140 x 150 x 86