Thermalright SGFX 850W 80+ Gold – ATX 3.1 Full Modular PSU

About the Thermalright SGFX 850W 80+ Gold

The Thermalright SGFX 850W 80+ Gold is a full modular PSU built for modern GPU builds. It supports ATX 3.1 and PCIe 5.1 standards without adapters. This makes it ideal for RTX 5080, RTX 5070 Ti, and RX 9070 XT graphics cards. First-time builders get cleaner cable management, experienced builders get reliable power delivery.

What This Thermalright SGFX 850W Does for You

You get native 12V-2x6 connector support for the latest graphics cards. No more hunting for adapter cables or worrying about compatibility. The best 850W PSU options handle power excursions up to 200% without shutting down. Full modular cables mean you only connect what you need—SATA drives, RGB controllers, or extra PCIe power. Japanese 105°C capacitors last longer than cheaper alternatives. LLC Resonant topology delivers stable voltage to your CPU and GPU even under heavy gaming loads.

Built for Reliability

This full modular PSU uses premium components you'd expect at higher price points. Japanese electrolytic capacitors handle heat better than standard 85°C variants. The 92mm fan stays quiet during normal use thanks to smart start/stop function. Six protection systems guard against overvoltage, overcurrent, and short circuits. Your motherboard, GPU, and storage drives stay safe even if something goes wrong. The compact 100mm depth fits most ATX cases without blocking cable routing channels.

Perfect For

• Mid-range gaming builds with RTX 5070 Ti, RTX 5080, or RX 9070 XT graphics cards needing reliable power delivery
• First-time Singapore PC builder projects where cable management matters for airflow and aesthetics
• Upgrading from semi-modular or non-modular PSUs for cleaner small form factor builds
• Budget-conscious builders who want ATX 3.1 compliance without overpaying for brand markup

Why Buy from Mansa Computers

• 5-year Singapore warranty with Thermalright service support
• Fast WhatsApp inquiry response for compatibility questions
• Open 7 days a week for support
• Home delivery available

Technical Specifications Summary

Wattage
850W

Efficiency
80 PLUS Gold

Modular Type
Full Modular

ATX Standard
ATX 3.1 Compliant

PCIe Connector
12V-2x6 PCIe 5.1 Native

Capacitors
Japanese 105°C

Fan Size
92mm Smart Fan

Warranty
5 Years

Ready to power your RTX 5080 build? The Thermalright SGFX 850W 80+ Gold gives you ATX 3.1 compliance and quality components at SGD 175. Questions about compatibility? WhatsApp us anytime.

Model
SGFX 850

Brand
Thermalright

Dimension (L x W x H)
100 x 125 x 64 ±1 mm

Wattage
850W

Efficiency
80 PLUS GOLD

Modular
Full-Modular

Input Voltage
100-240Vac

Input Current
10A

Input Frequency
50-60Hz

Fan Size
92 mm

Operating Temperature
0-40°C

MTBF
>100K Hours

Protections
OPP/OVP/OTP/OCP/SCP/UVP

Compatibility
Fully Compatible with Intel ATX 3.1 Specification (Supports up to 200% Power Excursion)
Ready for PCIe Gen 5.1 Graphics Cards with 12V-2x6 Cable Support

Design
LLC Resonant + DC-DC Circuit Design

Components
Japanese Electrolytic Capacitors Rated for 105°C

Voltage Design
100–240V Full Voltage

Cooling
Smart Fan Start/Stop Function

Connectors Included
1 × 20+4 Pin MB (300mm)
1 × 4+4 Pin CPU (400 + 120 mm)
2 × PCIe 6+2 Pin (400+120mm)
1 × 12V 2-6 PCIe 5.1 (400mm)
2 × SATA (120mm*3)
1 × PATA (120mm*3)

5 YEARS WARRANTY 

Tech Dynamic Pte Ltd
514 Chai Chee Ln #05-09, Singapore 469029
Contact: 6717 3000

Frequently Asked Questions About Thermalright SGFX 850W 80+ Gold

Does this PSU work with RTX 5080 graphics cards?

Yes, the Thermalright SGFX 850W includes a native 12V-2x6 PCIe 5.1 connector. It's ATX 3.1 compliant and handles 200% power excursions that RTX 5080 cards need. No adapters required.

Is 850W enough for a Ryzen 9 9950X with RTX 5080 build?

Yes, 850W covers that combo with headroom. The Ryzen 9 9950X peaks around 200W, RTX 5080 uses roughly 300W. You'll have plenty of capacity left for drives and RGB.

What's included with this full modular PSU?

You get the PSU unit, full modular cables for 24-pin motherboard, 8-pin CPU, PCIe 8-pin, 12V-2x6, SATA, and PATA connections. All cables detach completely for cleaner cable management.

What warranty coverage does Mansa provide in Singapore?

This comes with 5-year Thermalright Singapore warranty. If anything goes wrong, we handle the service claim process. WhatsApp us directly—we're open 7 days a week.

How does this compare to Corsair RM850x or Cooler Master MWE Gold?

Similar 850W Gold efficiency and full modular design. Main advantage here is ATX 3.1 compliance with native PCIe 5.1 connector at a lower price point. 5-year warranty matches Corsair.

How long will it take to receive my purchase?

Standard Shipping - 3 to 5 days
Express Shipping - 1 to 2 days

Can I opt for store pickup?

Yes, we are open daily for collection from 11 AM - 6.30 PM.

Address: 1 Ubi View #01-22, Focus One Building Singapore 408555 (Door located nearest to carpark exit gantry) We will contact you once your order is ready for collection!