Seasonic Vertex GX-850 Power Supply Review

The technical data of the Seasonic Vertex GX-850 ATX Power Supply …

Manufacturer Seasonic
Description Vertex GX
Product number 12851GXAFS
Colour black
Input voltage 100-240 VAC
Input frequency 50-60 Hz
Power class 850W
Power data +3.3V: 20A
+5V: 20A
+3.3V and +5V combined 100W
+12V: 70A / 840W
-12V: 0.03A / 3.6W
+5VSB: 3A / 15W
Total power max 850W
PFC 0.984 (115V)
0.947 (230V)
Form factor ATX
Dimensions 160 x 150 x 85mm (LxWxH)
Weight 1822 gram
Fan 1x 135mm, liquid bearing, PWM
0 RPM mode at part load selectable via switch
Protection circuits OPP, OVP, UVP, OCP, OTP, SCP
Connectors full modular design
1x motherboard 20+4-pin cable (16AWG, 18AWG, 610 mm)
2x CPU 4+4 pin cable (16AWG, 700 mm)
3x PCIe 6+2 pin cable (16AWG, 750 mm)
4x SATA cable (18AWG, 950mm, four connectors each)
1x SATA 3.3 cable (18AWG, 550mm, two connectors)
1x Molex cable (18AWG, 690mm, three plugs)
1x PCIe 5.0 12VHPWR (16AWG, 750mm, incl. sense cables)
Efficiency class 80 Plus Gold
Cybenetics Platinum Efficiency Level
Volume max. 40.6 dBA
Cybenetics Lambda A Noise Level
Warranty 10 Years
Conformities ATX 3.0, EPS 12V, PCIe 5.0
Energy Star, RoHS, WEEE, ErP Lot 6, REACH, RoHS-5
Miscellaneous MTBF 100,000h (fan 50,000h)
voltage regulation +/-3% for 12V, 5V and 3.3V
gold plated contacts on cables for CPU, MB and PCIe connectors

As is now common with modern PC power supplies, the Vertex GX-850 has a single 12V rail that is rated extremely powerful at 70A / 840W. It also complies with all current national and international regulations and includes all protection circuits against overload and short circuit to ensure the safest possible operation.

Particularly pleasing are the universal voltage input for 100V and 240V networks without a changeover switch and the 10-year warranty.

Seasonic Vertex GX-850 Layout, design and features …