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
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
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.
SpecPicks Verdict
SpecPicks classifies GAMDIAS ATX 3.1 & PCIe 5.1 850W Bronze PSU, 850W Gaming Power… as a solid pick with broad community endorsement in the power supplies category, based on 438 verified Amazon reviews and our ranking model that weights rating × review-volume × price-fit. GAMDIAS's positioning sits comfortably above the category median. Use the Compare tool to put it side-by-side with two or three close alternatives before clicking through to Amazon.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the Amazon listing before purchase. Prices, stock, and Prime eligibility update directly from Amazon's catalog and may have moved since this page was last verified.
Pros & Cons
Pros
- ✓ Highly rated — 4.5★ average across customer reviews
- ✓ Backed by GAMDIAS's warranty and support channels
- ✓ Ships via Amazon with Prime eligibility and the standard returns policy
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, and Prime eligibility update from Amazon and may have changed since this page was last verified
Key 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 M2-850B’s 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
Full Specifications
| Brand | GAMDIAS |
|---|---|
| Wattage | 850 watts |
| Model Name | HELIOS M2-850B |
| Form Factor | ATX |
| Model Number | HELIOS M2-850B(US) |
| Compatibility | PC |
| Connector Type | ATX |
| Cooling Method | Air |
| Output Wattage | 850 Watts |
| Item Dimensions | 10.2 x 8.3 x 3.9 inches |
| Mfr Part Number | HELIOS M2-850B(US) |
| Compatible Devices | Desktops |
| Power Supply Design | Non-Modular |
| Warranty Description | 3 Year Manufacturer |
Ready to buy?
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 is available on Amazon with Prime shipping and the full Amazon returns policy. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-05-24. Price and availability subject to change.
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