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Black rectangular ATX power supply with 140mm fan and modular cable sockets

SAMA

SAMA HAT-850yzB1G 850 W ATX 3.1 power supply

SKU CH-830Q-DERQT MPN HAT-850yzB1G

An ATX 3.1 compatible unit delivering 850 W through fully modular cables, a 140 mm FDB fan with ECO mode below 40 % load, Japanese capacitors and a 12VHPWR 16-pin connector for RTX 40

  • Max wattage850 W
  • Power efficiency> 90%
  • Modular cablingYes
  • Fan configuration1 × 140 mm
  • Power factor correctionActive
  • Main power connector24Pin

Model G850W Black

  • Cybenetics Gold certified for > 90 % efficiency with minimal noise
  • ATX 3.1 & PCIe 5.1 ready with 12VHPWR 16pin connector delivering up to 600 W to latest RTX GPUs
  • Fully modular cabling lets you connect only what you need for a clean build
  • 140 mm FDB fan runs silent under 40 % load via ECO mode
  • 100 % Japanese capacitors ensure stable power delivery and long-term durability

850 W ATX 3.1 Power Supply

This fully modular 850 W unit meets ATX 3.1 and PCIe 5.1 specifications. It uses a single +12 V rail and a 140 mm FDB fan. Japanese capacitors and Cybenetics Gold certification support high efficiency and low noise. The compact 150 mm depth fits most cases.

Suits high-performance PCs and compact silent builds

Ideal for systems with RTX 40 or 50 series graphics cards that draw up to 600 W through the 12V-2x6 connector. Builders who need multiple PCIe or SATA connections should check the cable count before choosing this model.

850 W capacity with 600 W GPU headroom

The 12V-2x6 connector delivers 600 W to a single graphics card. One 6+2-pin PCIe and two SATA power connectors cover basic storage and peripherals. Heavy multi-GPU or many-drive configurations will exceed the provided cables.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $55.99
Cheaper than about 88% of the 10,869 comparable items (median $142.99).
Max wattage 850 W
Typical for this category: the median of 930 items is 850 W.

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Specifications

Product
Brand nameSAMA
Product lineG-Series
Model nameHAT-850yzB1G
Part numberHAT-850yzB1G
Product typeATX 3.1 Compatible
Product colorBlack
Ports & slots
PCIe power connectors1 × 6+2-Pin
SATA power connectors2
Output type850 W
Connection types1 × 24 pin ATX
Power
Max wattage850 W
Power efficiency> 90%
Modular cablingYes
Power factor correctionActive
Main power connector24Pin
12V railsSingle
Power hold-up time> 12 ms @ 100% load
Overvoltage protectionYes
Overload protectionYes
Supply voltage100–240 V
Efficiency certificationCybenetics Certified
Size & build
Top fans size140 mm
Shipping weight2.27 kg
Package size259 × 198 × 114 mm
Compatibility
PSU length limit150 mm
More details
Fan configuration1 × 140 mm
Mean time between failures>100,000 h
Top fans bearing typeFluid Dynamic Bearing

Other versions of this model

5 more in the same range

Questions about this item

What motherboard connector does the HAT-850yzB1G need to power the board?

The unit ships with a standard 24Pin ATX main connector that plugs directly into any ATX motherboard.

Will the included 12VHPWR 16pin cable work with an older GPU that only has 6+2-pin sockets?

The PSU provides one native 6+2-pin PCIe connector; for older cards you would use that cable instead of the 12VHPWR lead.

How can I confirm the fan is running in ECO mode after the build is complete?

The 140 mm FDB fan stays off below 40 % load, so silence at idle or light desktop use means ECO mode is active.

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