Seasonic Focus GX 850W Gold – 10-Year Warranty Power Supply

About the Seasonic Focus GX 850W Gold

The Seasonic Focus GX 850W Gold is built for mid-to-high-end gaming PCs that need reliable, efficient power. This 80 plus gold power supply gives you comfortable headroom for newer GPUs like the RTX 5070 Ti, RTX 5080, or RX 9070 XT. Seasonic is known for solid PSU engineering, so you’re getting quality that’s meant to last, not just “looks good on paper”.

What This Power Supply Does for You

If you’re running a modern GPU and a CPU that boosts hard, this PSU keeps things stable under load. Fully modular cables make your custom PC easier to build and easier to tidy, especially in airflow-focused cases. The S3FC fan control includes a fanless mode at lighter loads, so your PC stays quiet during browsing, work, and casual gaming. When the system actually needs cooling, the fan ramps up smoothly instead of suddenly screaming.

Why 80 Plus Gold Matters

80 Plus Gold efficiency means less wasted power and less heat inside your case. That helps your overall system temperatures and can reduce fan noise across the whole build. Over the long run, it’s also friendlier on electricity use compared to Bronze units. If you’re comparing the best 850W power supply options, Gold is the sweet spot for performance, heat, and value.

Perfect For

• Newer GPU gaming builds where 850W gives you comfortable headroom today and flexibility for future upgrades.
• Builders who want fully modular cables for cleaner routing and easier airflow tuning in a custom PC.
• Upgrading from an older PSU that struggles with modern power spikes and higher total system load.
• Anyone who wants a quieter daily PC setup, thanks to fanless mode during lighter use.

Why Buy from Mansa Computers

• 10-year Singapore warranty with Seasonic service support
• Fast WhatsApp inquiry response for wattage calculations
• Open 7 days a week for PSU compatibility questions
• Home delivery available across Singapore

Technical Specifications Summary

Wattage
850W

Efficiency
80 Plus Gold Certified

Modularity
Fully Modular

Form Factor
ATX/EPS

Fan Size
120mm with Silent Mode

Protection
OVP, UVP, OPP, OTP, SCP

Warranty
10 Years

Ready to power your next build? The Focus GX 850W Gold gives you reliability and efficiency without the premium price tag. Order now or WhatsApp us for wattage recommendations.

Model
FOCUS GX-850

80PLUS®
Gold

Cybenetics Efficiency Level
TBA

Cybenetics Noise Level
TBA

Form Factor
ATX/EPS

Dimensions
140 × 150 × 86 mm

Fan Information
Fan Size: 135 mm
Fan Control: S3FC (including Fanless Mode)
Fan Bearing: Fluid Dynamic Bearing
Life Expectancy: 50,000 hours at 40 °C, 15 % - 65 % RH

Cable Information
Fully Modular

Operating Temperature
0 - 50 °C (derating from 100 % to 80 % from 40 °C to 50 °C linearly)

MTBF @ 25 °C, excl. fan
100,000 hours

AC Input
Full Range

Protection
OPP, OVP, UVP, OCP, OTP, SCP

Safety and EMC
cTUVus, TUV, CB, CCC, BSMI, EAC, CE

Environmental Compliance
Energy Star, RoHS, WEEE, ErP Lot 6, REACH

AC Input
100V - 240V
12 - 6A
50Hz - 60Hz

DC Output
Rail: +3.3 V, +5 V, +12 V, -12 V, +5 VSB
Maximum Power: 20A 100W, 20A, 70A 840W, 0.3A 3.6W, 3A 15W
Total continuous power: 850 W

10 YEARS WARRANTY 

Corbell Technology Pte Ltd
4012 Ang Mo Kio Ave 10 #06-04, Techplace 1,
Singapore 569628
Contact: 6452 4122

Frequently Asked Questions About Seasonic Focus GX 850W Gold

Is the 850W power enough if I want to upgrade to multiple GPUs later?

Yes, the Seasonic Focus GX 850W Gold provides ample power to support high-end CPUs and multiple GPUs, making it a great choice if you plan to upgrade your system with additional graphics cards in the future.

How does the 10-year warranty from Seasonic Singapore benefit me as a buyer?

The 10-year warranty means you get long-term peace of mind. If any manufacturing defects or failures occur within this period, Seasonic Singapore will repair or replace your PSU at no extra cost, ensuring reliable performance over the years.

Will this power supply fit inside smaller PC cases without issues?

Absolutely. The Focus GX 850W Gold features a compact 140mm depth design, which makes cable management easier and fits comfortably even in smaller or mid-sized cases without compromising airflow or installation space.

What does 'fully modular cables' mean, and why should I care?

Fully modular means you can connect only the cables you need. This reduces clutter inside your PC, improves airflow, and makes building or upgrading your system much tidier and hassle-free compared to semi-modular or non-modular PSUs.

Is the power supply quiet during normal use?

Yes, it features a fanless mode during low loads, so when your PC isn't working hard, the PSU runs silently. When the load increases, the 135mm fan kicks in quietly to keep things cool, balancing noise reduction with performance.

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!