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GAMDIAS ATX 3.1 & PCIe 5.1 850W Bronze PSU, 850W Gaming Power Supply, 80+ Bronze ATX Gold 12V Power Supplies for Gaming PC Desktop Computers and Active PFC

  • Based on 320 reviews
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Availability: Only 9 left in stock, order soon!
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Arrives Monday, May 18
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Style: PSU-GD-HELIOS M2-850B


Features

  • ATX 3.1 READY: GAMDIAS new 80+ gaming PSU Engineered to meet the latest connectivity standards, this PSU is ATX 3.1 ready, supporting up to 200% power excursion. Furthermore, it delivers an impressive 60% efficiency at low loads while complying with all essential power supply timing standards.
  • PCIe GEN 5.1 READY: The HELIOS M2-850B features a PCIe 12V-2x6 connector, providing powerful and stable performance, enabling the PSU to support next-generation GPUs seamlessly.
  • 80+ Bronze Certified Efficiency: GAMDIAS 80 plus bronze power supplies give the best and economic solution for the power transfer for your gaming computer pc systems
  • High AMP. Single +12V Rail & DC to DC Design: The HELIOS M2-850Bs single +12V rail ensures reliable power delivery and compatibility, while its DC to DC design offers stable operation and precise voltage regulation. High-quality capacitors further enhance performance and durability.
  • Automatic Fan Speed Optimization: GAMDIAS ECO fan speed control system adjusts the fan speed with the excellent balance between the power loading and noise

Description

NEXT GENERATION POWER: The HELIOS M2 Series, available in 550W, 650W, 750W, and 850W models, deliver reliable and efficient performance for various builds. The 550W and 650W models feature 80 PLUS Bronze certification with 85% efficiency, while the 750W and 850W models upgrade to 80 PLUS Silver with 88% efficiency. With automatic fan speed optimization for quiet operation, ATX 3.1 support, and comprehensive protection, the HELIOS M2 Series ensures dependable power for your PC.

Model Name: HELIOS M2-850B


Brand: GAMDIAS


Compatible Devices: Desktops


Connector Type: ATX


Output Wattage: 850 Watts


Form Factor: ATX


Wattage: 850 watts


Cooling Method: Air


Item dimensions L x W x H: 10.2 x 8.3 x 3.9 inches


Item Weight: 2.18 Kilograms


Compatible Devices: Desktops


Connector Type Used on Cable: ATX


Output Wattage: 850 Watts


Form Factor: ATX


Wattage: 850 watts


Cooling Method: Air


Power Supply Design: Non-Modular


Minimum Input Voltage: 100 Volts (AC)


System Bus Connector Type: ATX


Item Dimensions: 10.2 x 8.3 x 3.9 inches


Item Weight: 2.18 Kilograms


Model Name: HELIOS M2-850B


Brand: GAMDIAS


Manufacturer: GAMDIAS


UPC: 848475010946


Mfr Part Number: HELIOS M2-850B(US)


Model Number: HELIOS M2-850B(US)


Warranty Description: 3 Year Manufacturer


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • 10/10 good for budgeting
Style: GD-KRATOS M1-600B
It does the job yet it’s pretty loud. There’s a setting for it being quiet and it does work really well but I prefer it being loud rather than it getting hot. Cable lengths are pretty good and it’s easy to install they have lot of the cables labeled where it goes on the motherboard and the case itself. Power works perfectly fine and the connectors work well with B550 mother boards :) ... show more
Reviewed in the United States on January 27, 2026 by Ryan

  • Silent reliable PSU
Style: GD-KRATOS M1-600B
The first PSU I ordered of a different brand was DOA. I saw this PSU which has 50w less power than the original but it worked flawlessly out of the box. It runs quiet with an option to turn the fan on high (a little louder) but the system is working fine with the fan on regular silent mode.
Reviewed in the United States on January 27, 2026 by Noypi13

  • Def worth every penny
Style: KRATOS
This thing is going on 4 years solid even with all my pc upgrades to my pc with the years and this power supply has not failed me yet amazing quality
Reviewed in the United States on January 16, 2026 by King and queen 125

  • Incredible product
Style: KRATOS
Imcredible. Goes PERFECT with an RX 9060 xt 16GB OC and a ryzen 5 9600X and no problems at all i love it dude.
Reviewed in the United States on December 15, 2025 by Kevin.L

  • Buy it
Style: KRATOS
Great product and put out clean power 😎🤙🏾
Reviewed in the United States on January 24, 2026 by Da' Bishop

  • Works
Style: KRATOS
Power supply works real good, power's is everything as it should, bought this because I thought it would have extra wiring for the fan's and lights in their computer case that I bought, made no difference at all, the case is nice but the fan's and lights don't work at all and are useless junk as far as I'm concerned! ... show more
Reviewed in the United States on May 4, 2025 by Terry E. Long Sr.

  • High quality cable system. Way more than you need.
Style: PSU-GD-HELIOS M2-850B
Great gaming power supply. Plenty of extra cable hookups for adding hardware.
Reviewed in the United States on January 28, 2026 by Rodney Shute

  • Great price, works flawlessly
Style: GD-KRATOS M1-600B
I've bought 4 of these in the last couple years never had a issue, great budget psu with argb
Reviewed in the United States on December 3, 2025 by Virginia

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