Target Components Ltd

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

Manufacturer's Website:

seasonic.com/

Warranty:

CERTIFICATES
Certification	BSMI, C-tick, CB, CCC, CE, cTUVus, EAC, FCC, TUV, UKCA
DESIGN
Product colour	Black
Number of fans	1 fan(s)
On/off switch	Yes
Cooling type	Active
Fan diameter	12 cm
ENERGY MANAGEMENT
Input current	9 A
Power protection features	Over current, Over power, Under voltage, Over total voltage, Over voltage, Short circuit
Combined power (+3.3V)	100 W
Combined power (+12V)	840 W
Combined power (-12V)	3.6 W
Combined power (+5Vsb)	15 W
Max output current (+3.3V)	20 A
Max output current (+12V)	70 A
Max output current (+5V)	20 A
Max output current (-12V)	0.3 A
Max output current (+5Vsb)	3 A
AC input frequency	50/60 Hz
AC input voltage	100 - 240 V
Total power	850 W
OPERATIONAL CONDITIONS
Operating temperature (T-T)	0 - 50 °C
PACKAGING CONTENT
Cables included	AC, Peripheral (Molex) to SATA 3.3, CPU, PCIe, SATA
PACKAGING DATA
Cables included	AC, Peripheral (Molex) to SATA 3.3, CPU, PCIe, SATA
Package type	Box
PERFORMANCE
Certification	BSMI, C-tick, CB, CCC, CE, cTUVus, EAC, FCC, TUV, UKCA
Mean time between failures (MTBF)	100000 h
Purpose	PC
ATX version	3.1
80 PLUS certification	80 PLUS Gold
Power supply unit (PSU) form factor	ATX
PORTS & INTERFACES
Cabling type	Fully-Modular
Number of PATA power connectors	2
WEIGHT & DIMENSIONS
Height	86 mm
Width	150 mm
Depth	140 mm