The GAMDIAS HELIOS M2-850B (HELIOS M2-850B) is an 850W ATX 3.1 power supply built for modern gaming PCs. It meets 80 PLUS Silver efficiency with up to 88% efficiency, and its native PCIe 5.1 12V-2x6 connector powers the latest graphics cards, backed by support for up to 200% power excursion. A high amperage single +12V rail (70.8A) and DC to DC design keep voltages stable, while high quality capacitors add durability. The 120mm sleeve bearing fan automatically adjusts speed to temperature and load, and flat black cables simplify routing and improve airflow. Full protection against over and under voltage, over power, short circuit, over current and over temperature keeps your components safe. It is a solid choice for mid to high-end gaming builds in Saudi Arabia.
Key Features
850W total power with 1105W peak power
80 PLUS Silver efficiency with up to 88% efficiency
ATX 3.1 compliant with support for up to 200% power excursion
PCIe 5.1 ready with a native 12V-2x6 (12+4 pin) connector
Single +12V rail delivering up to 70.8A
DC to DC design for precise voltage regulation
High quality capacitors for stable, long-lasting operation
120mm sleeve bearing fan with automatic speed optimisation
Flat black cables for cleaner builds and better airflow
Heavy-duty protection: OVP, UVP, OPP, SCP, OCP and OTP
Active PFC with a power factor of 0.99 and C6/C7 power state support
Full Specifications
General Information
Brand
GAMDIAS
Product Name
GAMDIAS HELIOS M2-850B
Model
HELIOS M2-850B
Product Type
ATX power supply
Condition
New, genuine GAMDIAS stock
Power
Standard
ATX12V v3.1
Total Power
850W
Peak Power
1105W
Efficiency
80 PLUS Silver (up to 88%)
PFC
Active PFC, PF 0.99
AC Input
100-240V, 10A, 50-60Hz
C6/C7 Support
Yes
DC to DC
Yes
Output
Rails
+3.3V / +5V / +12V / -12V / +5Vsb
Max Current
22A / 22A / 70.8A / 0.3A / 3A
Max Power
120W (3.3V+5V) / 850W (12V) / 3.6W / 15W
Connectors
Main Power
1 x 20+4 pin
CPU
2 x 4+4 pin
PCIe
2 x 6+2 pin
12V-2x6
1 x 12+4 pin
SATA
4
Molex
4
Modularity
Non modular
Flat Cables
Yes
Cooling
Fan
120mm sleeve bearing
Fan Control
Automatic, temperature based
Silent Mode
No
Protection
Protections
OVP / UVP / OPP / SCP / OCP / OTP
Compliance
ErP Lot 6
Physical
Dimensions (L x W x H)
140 x 150 x 86 mm
Colour
Black
Who It Is For
Gamers building a new PC with a modern PCIe 5 graphics card
PC builders upgrading to an ATX 3.1 power supply
Budget-conscious users who need 850W of reliable power
System integrators assembling mid to high-end gaming rigs
Buyers in Riyadh, Jeddah and Dammam wanting a genuine GAMDIAS power supply with local warranty
What's in the Box
GAMDIAS HELIOS M2-850B power supply
AC power cord
Mounting screws
User manual
Frequently Asked Questions
What efficiency rating does the GAMDIAS HELIOS M2-850B have? GAMDIAS lists it as meeting 80 PLUS Silver efficiency, with up to 88% efficiency.
Does the HELIOS M2-850B support new graphics cards? Yes. It is ATX 3.1 and PCIe 5.1 ready, with one native 12V-2x6 (12+4 pin) connector plus two 6+2 pin PCIe connectors.
Is the HELIOS M2-850B modular? No, it is a non modular power supply with flat black cables.
How many CPU connectors does it have? It has two 4+4 pin CPU connectors.
What cooling does it use? A 120mm sleeve bearing fan with automatic speed adjustment based on temperature and load.
Which protections are included? Over voltage, under voltage, over power, short circuit, over current and over temperature protection.
Is the GAMDIAS HELIOS M2-850B available in Saudi Arabia? Yes. PC PARK supplies the genuine GAMDIAS HELIOS M2-850B (HELIOS M2-850B) in Saudi Arabia with local warranty and fast delivery to Riyadh, Jeddah, Dammam and the rest of the Kingdom.
Order the GAMDIAS HELIOS M2-850B (HELIOS M2-850B) from PC PARK, genuine GAMDIAS stock with local Saudi warranty and fast delivery across the Kingdom.
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Our Milestones
2023
Expanded our product catalog with the latest gaming and professional hardware, serving thousands of satisfied customers
2024
Launched our online store and delivery service, making tech accessible to customers across Saudi Arabia
2025
Reached a major milestone in customer satisfaction with enhanced after-sales support and warranty services
2026
Continuing to grow as Saudi Arabia's trusted destination for technology, gaming, and custom PC solutions
