Thermalright KG 850 80+ Gold – ATX 3.1 Full Modular PSU

About the Thermalright KG 850 80+ Gold

The Thermalright KG 850 80+ Gold is an 850W power supply built for modern gaming rigs and high-performance PCs. It meets ATX 3.1 specifications with native PCIe 5.1 support, so you get a proper 12V-2x6 connector instead of relying on adapters. Full modular cables let you customize what’s inside your case for better airflow and cleaner aesthetics. This best PC power supply combines premium components with practical pricing for builders who want reliability without overpaying for brand names.

What This Thermalright KG 850 80+ Gold Does for You

Power transient spikes from modern GPUs can crash systems with older PSUs that lack ATX 3.1 compliance. This 850W power supply supports up to 200% power excursions, helping prevent shutdowns mid-game or mid-render. The LLC Resonant + DC-DC circuit design keeps voltages steady during sudden load changes. Full modular cables mean you only connect what you need—no cable clutter blocking fans or ruining your tempered glass view. Japanese 105°C rated main capacitors are built to handle sustained heat more reliably. For Singapore pc builder projects or personal gaming rigs, you get consistent power delivery that protects your whole system investment.

Build Quality That Lasts

Most budget PSUs cut corners on internal components to hit low prices. Thermalright uses Japanese main capacitors rated for 105°C operating temperatures and includes comprehensive protections: OVP, UVP, OCP, OTP, SCP, and OPP. The >100K hours MTBF rating suggests this unit can run continuously for over 11 years under typical conditions. Full voltage range (100-240V) means stable operation even during Singapore's occasional power fluctuations. The 120mm fan stays quiet during normal loads and ramps up only when necessary.

Perfect For

• High-end gaming builds with modern graphics cards that demand clean, stable power
• Content creators running rendering workloads on powerful CPUs and GPUs simultaneously
• Enthusiasts upgrading to the ATX 3.1 standard without replacing entire systems or relying on adapter cables
• System integrators who need reliable PSUs with local warranty support for customer builds

Why Buy from Mansa Computers

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

Technical Specifications Summary

Wattage
850W

Efficiency
80+ Gold Certified

Design
Full Modular

Compliance
ATX 3.1, PCIe 5.1

Main Connector
Native 12V-2x6 (600mm)

Capacitors
Japanese 105°C Rated

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

MTBF
>100,000 Hours

The Thermalright KG 850 80+ Gold gives you modern power delivery standards without compromising on component quality. Order yours today and power your next build with confidence.

Model
KG 850 Black

Brand
Thermalright

Dimension (L x W x H)
150 x 140 x 86 ±5 mm

Wattage
850W

Efficiency
80 PLUS GOLD

Modular
Full-Modular

Input Voltage
100-240Vac

Input Current
10A

Input Frequency
50-60Hz

Fan Size
120 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 Main Capacitors Rated for 105°C

Voltage Design
100–240V Full Voltage

Connectors Included
1 × 20+4 Pin MB (600mm)
2 × 4+4 Pin CPU (650 mm)
2 × PCIe 6+2 Pin (600mm)
1 × PCIe 5.1 12+4 Pin (600mm)
2 × SATA (450 + 150mm x 3)
1 × PATA (450 + 150mm x 2)

5 YEARS WARRANTY 

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

Frequently Asked Questions About Thermalright KG 850 80+ Gold

Does this PSU include the native 12V-2x6 connector for RTX 5090?

Yes, the Thermalright KG 850 80+ Gold includes one native PCIe 5.1 12V-2x6 connector rated for 600W. This eliminates the need for adapters that can melt or fail under load.

Can this 850W power supply handle an RTX 5090 with Ryzen 9 7950X?

Yes, 850W provides adequate headroom for RTX 5090 (450W peak) plus Ryzen 9 7950X (170W) with room for other components. The ATX 3.1 compliance handles GPU power spikes safely.

Is this PSU compatible with my ATX case and older motherboard?

Yes, standard ATX dimensions (150 x 140 x 86mm) fit most cases. All legacy connectors (24-pin MB, 8-pin CPU, PCIe, SATA) work with older boards while adding ATX 3.1 future-proofing.

What warranty coverage do I get in Singapore?

5-year Thermalright Singapore warranty covers manufacturing defects and failures. Mansa Computers provides local support with fast WhatsApp response and we're open 7 days weekly.

How does this compare to Corsair RM850e or Seasonic Focus GX-850?

Similar specs (80+ Gold, full modular, ATX 3.1) at lower cost. Japanese capacitors and 5-year warranty match premium brands while saving you 30-40% on price.

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!