GAMDIAS
GAMDIAS ATX 3.1 & PCIe 5.1 850W Bronze PSU
Bottom line: The GAMDIAS ATX 3.1 & PCIe 5.1 850W Bronze PSU: ATX 3.1 ready, supports up to 200% power excursion for transient GPU spikes; main trade-off: 80+ Bronze certification, not Gold, despite mixed listing claims.
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Pros & Cons
Pros
- ✓ ATX 3.1 ready, supports up to 200% power excursion for transient GPU spikes
- ✓ Native PCIe 5.1 12V-2x6 connector for next-gen GPUs
- ✓ 88% efficiency at 850W (80+ Silver-rated on this model)
- ✓ Single high-amp +12V rail with DC-to-DC for stable voltage regulation
Cons
- ✗ 80+ Bronze certification, not Gold, despite mixed listing claims
- ✗ 850W caps very high-draw dual-GPU or heavy-overclock builds
- ✗ No stated 80+ Silver logo despite 88% efficiency claim
- ✗ Confusing spec listing mixes Bronze, Silver, and Gold references
Manufacturer 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.
SpecPicks Verdict
SpecPicks scored GAMDIAS ATX 3.1 & PCIe 5.1 850W Bronze PSU using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. GAMDIAS's power supplies lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
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 retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
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 |
| Unit Count | 1 Count |
| Form Factor | ATX |
| Model Number | HELIOS M2-850B(US) |
| Compatibility | PC |
| Connector Type | ATX |
| Cooling Method | Air |
| Number of Fans | 1 |
| Output Wattage | 850 watts |
| Item Dimensions | 10.2 x 8.3 x 3.9 inches |
| Mfr Part Number | HELIOS M2-850B(US) |
| Number of Items | 1 |
| Compatible Devices | Desktops |
| Power Supply Design | Non-Modular |
| Warranty Description | 3 Year Manufacturer |
| Minimum Input Voltage | 100 volts_of_alternating_current |
| Item dimensions L x W x H | 10.2 x 8.3 x 3.9 inches |
| System Bus Connector Type | 24 Pin |
| Full listing title | 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 |
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 listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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