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Seasonic · 850 W · ATX

SEASONIC CORE V2 GX-850

ATX 3.1 · 80 PLUS Gold · Modular

Capability: 69
Cap / price: 53
Wattage value: 52
Amazon: $130

View SEASONIC CORE V2 GX-850 Gallery in high resolution

Available on Amazon Updated Aug 30, 2026 Prime FBA

Capability68.5

Capability / price52.7

Wattage value52.3

$130 on Amazon PSU table Compare this PSU

Size this PSU for a complete buildThe Builder unlocks PSU choices after it knows the CPU, GPU, case format, and estimated demand. Calculate build power first

Written analysis

SEASONIC CORE V2 GX-850 at a glance

The SEASONIC CORE V2 GX-850 is a 850 W ATX power supply built to the ATX 3.1 generation. Efficiency is listed as 80 PLUS Gold. Cables are modular. It supports fan-stop at low load.

The calculated capability score is 68.5, averaging the available wattage, recorded efficiency percentage, and warranty inputs against fixed references. Listed warranty is 7 years. +12V output is 70 A.

Best fit: Performance desktops whose calculated component load fits comfortably within a 750–999 W supply.

Platform and cooling

Dimensions are listed as 140 × 150 × 86 mm. Cooling fan size is 120 mm. The unit uses 1 +12V rail at up to 70.00 A per rail. Certifications include 80 PLUS®Gold.

Current value

At $130, price per kilowatt is $152.93. Capability / price is 52.7 and wattage value is 52.3. Compare nearby supplies below; wattage alone does not determine value.

Unit data

Full specifications

Wattage, efficiency, platform size, electrical outputs, connectors, cooling, and value in one technical sheet.

General

Manufacturer: Seasonic
PSU: SEASONIC CORE V2 GX-850
Launch price: —
Amazon price: $130
Amazon availability: Available
Price updated: Aug 30, 2026

Power & efficiency

Wattage: 850 W
Efficiency: 80 PLUS Gold
Recorded efficiency: 90%
Warranty: 7 years

Value

Amazon price: $130
Price / kW: $152.93
Capability: 68.5
Capability / price: 52.7
Wattage value: 52.3

Platform & size

ATX generation: 3.1
Form factor: ATX
Dimensions: 140 × 150 × 86 mm
Modular: Yes
Fanless: No

Electrical

Input voltage: 100-240
+12V output: 70 A
+5V output: 20 A
+3.3V output: 20 A
+12V rails: 1
Max amps / rail: 70.00 A

Cooling & build

Fan size: 120 mm
Fan stop: Yes
Certifications: 80 PLUS®Gold

Additional information

Also listed as: CORE V2 GX-850
Color: Black

Amazon

Price history

Nearby capability

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Discussion

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

High Efficiency, 80 PLUS Gold Certified

ATX 3 and 16-Pin PCIe Gen 5 Cable (12V-2x6)

OptiSink Design

Fully Modular Cabling Design

Compact Size (140 mm)