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Black rectangular ATX power supply unit with modular cable sockets and a single 120 mm fan grille

Thermaltake

Thermaltake Toughpower GF A3 850W Gold TT Premium Edition power supply

SKU CH-2ZYG-Q30ZA

Fully modular 850 W ATX 3.0 power supply with 80 PLUS Gold efficiency and a native 12VHPWR connector for PCIe 5.0 graphics cards

  • Max wattage850 W
  • Modular cablingFull Modular
  • Fan configuration1 × 120 mm
  • Power factor correctionActive
  • PSU length limit150 mm
  • Power good signal100-250 msec

Wattage 850W

  • 80 PLUS Gold efficiency reduces energy waste
  • Native 12VHPWR connector delivers up to 300W for PCIe 5.0 graphics cards
  • ATX 3.0 compliance supports 200% power excursion and 60% low-load efficiency
  • Fully modular cabling cuts clutter and improves case airflow
  • Japanese main electrolytic capacitors and 100,000-hour MTBF ensure long-term reliability

850W ATX 3.0 Power Supply

The Thermaltake Toughpower GF A3 850W Gold TT Premium Edition is a fully modular ATX 3.0 compatible power supply. It delivers 850W of continuous power with 80 PLUS Gold certified efficiency. The unit includes a native 16-pin 12VHPWR connector ready for PCIe Gen 5.0 graphics cards. Japanese main electrolytic capacitors support long-term reliability.

Suited for modern PC builds needing ATX 3.0 support

This unit suits builders assembling systems with current-generation GPUs that require a native 12VHPWR connection. The 850W output handles high-performance single-GPU configurations comfortably. Builders planning multi-GPU setups or extreme overclocking headroom should look at higher wattage units. Cases with severe length restrictions under 150mm cannot accommodate this PSU.

Native 12VHPWR connector for PCIe Gen 5.0

The defining specification is the native 16-pin 12VHPWR cable designed for PCIe Gen 5.0 graphics cards. This connector can deliver up to 300W directly to a compatible GPU without adapters. ATX 3.0 compliance ensures support for 200% power excursions and 60% low-load efficiency requirements. This connector determines whether the PSU matches your graphics card's power input.

How it compares

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

Price $147.99
Typical for this category: the median of 10,869 items is $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 nameThermaltake
Product lineTOUGHPOWER GF A3
Product colorBlack
Product typeATX 3.0 Compatible
Ports & slots
PCIe power connectors4 × 8-Pin (6+2) PCI-E connectors,
1 × 16-Pin (12+4) PCI-E connector
SATA power connectors8
Floppy connector1
Peripheral connector4
Power
Max wattage850 W
Modular cablingFull Modular
Power factor correctionActive
Power good signal100-250 msec
Power hold-up time> 17msec
Efficiency certification80 PLUS GOLD Certified
Overvoltage protectionYes
Supply voltage100–240 V
AC input frequency50 Hz - 60 Hz
Rated input current10A Max.
+3.3V max. current20A
+5V max. current20A
+12V1 max. current62.5A
-12V max. current3A
+5VSB max. current0.3A
Main power connector24 Pin
Under voltage protectionYes
Over current protectionYes
Over power protectionYes
Size & build
Product dimensions150 mm(W)x86 mm(H)x140 mm(D)
Product weight1.63kg
Top fans size120 mm
Compatibility
PSU length limit150 mm
In the box
Fans total quantity1
Environment & compliance
Regulatory approvalsCE/FCC/UKCA/ICES/LVD/TUV/cTUVus/CB/CCC/BSMI
Over temperature protectionYes
More details
Fan configuration1 × 120 mm
Mean time between failures>100,000 h
Short circuit protectionYes

Other versions of this model

3 more in the same range

Questions about this item

Will the 12VHPWR connector run a PCIe 5.0 graphics card without an adapter?

Yes, the native 16-pin 12VHPWR cable is included and rated for up to 300 W on PCIe 5.0 cards.

Does the 150 mm depth leave clearance in a standard mid-tower case?

At 150 mm deep the unit fits most mid-tower chassis; measure your case’s PSU bay to confirm.

Is the PSU fully modular so I only connect the cables my build needs?

Fully modular design lets you attach only the required cables, reducing clutter and improving airflow.

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