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Seasonic core gx-850 850w atx 3.1 psu 80 plus gold cybenetics platinum fully modular native 12v-2x6 black

Product image: Seasonic core gx-850 850w atx 3.1 psu 80 plus gold cybenetics platinum fully modular native 12v-2x6 black-null
Product image: Seasonic core gx-850 850w atx 3.1 psu 80 plus gold cybenetics platinum fully modular native 12v-2x6 black-null
Product image: Seasonic core gx-850 850w atx 3.1 psu 80 plus gold cybenetics platinum fully modular native 12v-2x6 black-null
Product image: Seasonic core gx-850 850w atx 3.1 psu 80 plus gold cybenetics platinum fully modular native 12v-2x6 black-null
Product image: Seasonic core gx-850 850w atx 3.1 psu 80 plus gold cybenetics platinum fully modular native 12v-2x6 black-null
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Seasonic core gx-850 850w atx 3.1 psu 80 plus gold cybenetics platinum fully modular native 12v-2x6 black

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From: Singular Computers Systems LTD
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Description

Item No. 2e3a4c6e-37f0-49b2-ba13-2f2189b82771
Seasonic CORE GX-850 (2024) 850W ATX 3.180 PLUS GoldCybenetics PlatinumNative 12V-2x6 The Seasonic CORE GX-850 (2024) is a fully modular 850-watt ATX 3.1 power supply with 80 PLUS Gold and Cybenetics Platinum efficiency, built for gaming PCs and creators who want trusted Seasonic quality at a sensible price. Carrying the distributor reference SRP-CGX851-A5A32SF, it ships with a native 12V-2x6 cable for PCIe 5.1 graphics cards plus a 12V-2x6-to-2×8-pin adapter for older GPUs, and uses Seasonic’s

Details

Seasonic CORE GX-850 (2024)

850W ATX 3.180 PLUS GoldCybenetics PlatinumNative 12V-2x6

The Seasonic CORE GX-850 (2024) is a fully modular 850-watt ATX 3.1 power supply with 80 PLUS Gold and Cybenetics Platinum efficiency, built for gaming PCs and creators who want trusted Seasonic quality at a sensible price. Carrying the distributor reference SRP-CGX851-A5A32SF, it ships with a native 12V-2x6 cable for PCIe 5.1 graphics cards plus a 12V-2x6-to-2×8-pin adapter for older GPUs, and uses Seasonic’s new OptiSink thermal design for any-orientation installation. A 7-year warranty backs it. Typically in stock with fast delivery across Cyprus.

Compatibility & fit
Includes a native 600W 12V-2x6 cable for PCIe 5.1 / RTX 40 & 50-series GPUs, plus three PCIe 6+2 connectors and a 12V-2x6-to-2×8-pin adapter for previous-generation cards. Two CPU 8/4 cables cover dual-EPS motherboards. Compact 140mm depth with OptiSink allowing install in any orientation; full-range 100–240V input runs natively on Cyprus 230V mains.

Best For

✓Gaming PCs with RTX 40/50-series or Radeon GPUs
✓PCIe 5.1 / ATX 3.1 builds wanting a native 12V-2x6 cable
✓Builders upgrading the PSU but keeping an older GPU (adapter included)
✓Compact builds needing a short 140mm unit
✓Value-focused buyers wanting trusted Seasonic quality
✓Any-orientation installs (OptiSink thermal design)

Key Features

 
Gold-rated, Platinum-quiet
80 PLUS Gold certified (90% at 50% load) and rated Cybenetics Platinum efficiency with an A- noise grade — efficient and quiet for everyday and heavy use.
 
Native 12V-2x6 + legacy adapter
Includes a native 600W 12V-2x6 cable for PCIe 5.1 GPUs plus a 12V-2x6-to-2×8-pin adapter, so it powers both the newest and previous-generation graphics cards.
 
OptiSink thermal design
A redesigned PCB and OptiSink heat-spreading deliver up to eightfold better heat dissipation, allowing the PSU to run cooler and be installed in any orientation.
 
Fully modular, built to last
Fully modular individually-sleeved braided cables, a 120mm Hydro-Dynamic-Bearing fan with Smart & Silent Fan Control, and a 7-year warranty.

Technical Specifications

Identification
Part Number SRP-CGX851-A5A32SF
EAN / GTIN 4711173878476
MPN CORE GX-850 ATX 3.1
Model CORE GX-850 (2024)
Power OuTPUt
Continuous power 850W (@50°C)
+12V rail 70A single rail (840W)
+3.3V / +5V 20A / 20A (100W combined)
+5Vsb / -12V 3A / 0.3A
Efficiency & Standard
Efficiency rating 80 PLUS Gold + Cybenetics Platinum (noise A-) — 90% at 50% load
Form factor ATX 3.1 / EPS
GPU connector Native 12V-2x6 (600W) + 12V-2x6-to-2×8-pin adapter
Thermal design OptiSink — any-orientation installation
Input 100–240V full-range, 50–60Hz (11–5.5A)
Operating temperature 0–50°C
Cooling
Fan 120mm Hydro-Dynamic-Bearing
Fan control Smart & Silent Fan Control (S2FC)
Cables & Connectors
Cabling Fully modular — individual braided black cables
Motherboard 1× 24/20-pin ATX
CPU / EPS 2× CPU 8/4-pin
PCIe (GPU) 1× 12V-2x6 (12+4) + 3× PCIe 8/6-pin
Peripheral 6× SATA, 3× Molex
Protection & Physical
Protections OCP, OPP, OTP, OVP, SCP, UVP
Dimensions (L×W×H) 140 × 150 × 86 mm
Colour Black
Reliability MTBF 100,000h @25°C
Warranty 7 years

Frequently Asked Questions

Does the CORE GX-850 work with an RTX 50-series GPU?
Yes. It includes a native 600W 12V-2x6 cable (PCIe 5.1) for RTX 40 and 50-series cards, plus three PCIe 6+2 connectors and a 12V-2x6-to-2×8-pin adapter for older GPUs.
Can I install it with the fan facing any direction?
Yes. The new OptiSink thermal design improves heat dissipation enough that the CORE GX-850 can be safely installed in any orientation, giving you flexibility with case layout and airflow.
Is it a quiet power supply?
Yes. Its 120mm Hydro-Dynamic-Bearing fan with Smart & Silent Fan Control earns a Cybenetics A- noise rating, keeping the unit quiet across typical load levels.
What do I need to know before buying the CORE GX-850?
It is a fully modular ATX 3.1 unit on full-range 100–240V mains (works on Cyprus power), with a native 12V-2x6 cable, OptiSink any-orientation design and a 7-year Seasonic warranty.
Singular Expert Insight
The CORE GX is Seasonic’s value-mainstream line, sitting below the FOCUS GX and PRIME ranges, and the 2024 refresh adds ATX 3.1, a native 12V-2x6 cable and the clever OptiSink any-orientation design. It earns a Cybenetics Platinum efficiency rating despite its Gold price point, making it one of the better-value PC power supplies for a modern single-GPU build. It is not semi-fanless, so the fan runs (quietly) at all loads; if you want a true Zero-RPM mode or higher efficiency, step up to Seasonic’s FOCUS GX or VERTEX lines.

Buyer’s Guide

Buy it if
You want trusted Seasonic quality at a value price — a fully modular 850W ATX 3.1 PSU with a native 12V-2x6 cable and Cybenetics Platinum efficiency.
Skip it if
You want a semi-fanless Zero-RPM mode or 80 PLUS Platinum branding — step up to Seasonic’s FOCUS GX or VERTEX series.
Also consider
The CORE GX-1000 for more headroom, the 750W for lower-draw builds, or the CORE GX White to match a light theme.