Antec

Antec HCG1000 Gold Extreme

Expert rating8.3 / 10

Power SuppliesView on antec.com

Wattage:: 1000 W
80 PLUS Rating:: Gold
Modularity:: Fully Modular
ATX Standard:: ATX 2.x

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Manufacturer: Antec Last updated: 2026-09-12

Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier) Review

Antec HCG1000 Gold Extreme 1000W 80 Plus Gold fully modular power supply, ATX 3.0 certified, ATX form factor, native 12V-2x6/12VHPWR connector, 10-year warranty, CWT platform.

The Antec HCG1000 Gold Extreme is Antec's refreshed HCG Extreme line with native ATX 3.0 transient handling, positioned as a value alternative to Corsair's RM1000e. Rated 1000W at 80 PLUS Gold (Cybenetics Gold efficiency / A noise), it's built on a CWT platform with a 135mm fluid dynamic bearing fan running a zero-RPM semi-passive mode at idle. Fully Modular cabling and a 160mm chassis depth make it a realistic fit for an RTX 4080/4090 or RTX 5080/5090-class high-end gaming build, and it's backed by a 10-year warranty.

Efficiency, Noise, and Build Quality

The HCG1000 Gold Extreme carries an 80 PLUS Gold certification and a Cybenetics Gold efficiency / A noise rating, translating to consistently high real-world efficiency at typical 50% load and low fan noise thanks to its 135mm fluid dynamic bearing. It uses a CWT platform with Japanese-made capacitors throughout for long-term reliability under sustained load.

Connectors and Cabling

Connector layout is 1x 24-pin ATX, 2x EPS 4+4, 1x 12V-2x6 (600W), 4x PCIe 6+2-pin, 8x SATA, 4x Molex. With 1 native 12V-2x6 connector(s) rated to deliver up to 600W to a single GPU, there's no need for a 4x8-pin-to-12VHPWR adapter on current-generation flagship cards. Cabling is fully modular, using standard flat or ribbon cables, with a single +12V rail design that simplifies load balancing across connectors.

Comparison to Alternatives

Against the Silverstone SX800-LTI (Silverstone's 800W SFX-L Titanium flagship), the Antec HCG1000 Gold Extreme matches its wattage class but differs on connector generation and OEM platform, making the choice mostly about brand ecosystem, warranty length (10 years here), and whether native 12V-2x6 connectors matter for your GPU. Compared with the Corsair RM1000x (Corsair's ATX 3.1-certified 1000W Gold benchmark), the HCG1000 Gold Extreme sits in the high-end/multi-GPU bracket at 1000W, so the decision usually comes down to matching wattage headroom to your actual GPU/CPU combo rather than one being categorically better.

Specifications

Identity

Brand	Antec
Model Number	HCG1000 Extreme

Output and rails

+12V Rail Amperage	83 A
Single +12V Rail	Yes

Standards and compliance

PCIe CEM Standard	None
Hold-Up Time	18 ms

Efficiency and noise

Measured Avg Efficiency	89.7 %
Measured Average Noise	28.31 dBA

GPU power delivery

12VHPWR Connectors	0

Connector inventory

EPS 8-pin Connectors	2
SATA Connectors	12
Molex Connectors	6

Form factor and fit

Length	160 mm
Colour	Black

Cooling

Fan Bearing	Fluid Dynamic
Zero-RPM Switchable	Yes

Build quality

Topology	Full-Bridge LLC + DC-DC

Cables

Modularity	Fully Modular

Monitoring, protection and price

Protections	OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO
Price	149.99 USD
Warranty	10 years

Wattage	1000 W
80 PLUS Rating	Gold
ATX Standard	ATX 2.x
Form Factor	ATX
Cybenetics Efficiency	Platinum
Cybenetics Noise	A-
12V-2x6 Connectors	0
Zero-RPM Mode	Yes
Sleeved Cables	No
PCIe 8-pin Connectors	8
Connector Count	1x 24-pin ATX, 2x EPS 4+4, 8x PCIe 6+2-pin, 12x SATA, 6x Molex, 1x FDD adapter
Fan Size	135 mm
Fan Model / Bearing	Hong Hua HA13525H12F-Z, fluid dynamic bearing
OEM / Platform	Seasonic
Japanese Capacitors	Yes
Cable Lengths	ATX 550mm, EPS 650mm, PCIe 550mm and 550+100mm, SATA 400+90+90+90mm, Molex 500+100+100+100mm
Source URL	https://www.antec.com/product/power/hcg1000-extreme

Expert Review

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating8.3 / 10

A solid 1000W Gold-rated ATX unit for an RTX 4080/4090 or RTX 5080/5090-class high-end gaming build, held back only by the usual mid-tier compromises on cabling and OEM sourcing.

Best for

Builders targeting an RTX 4080/4090 or RTX 5080/5090-class high-end gaming build
Anyone who wants fully modular cabling with native 12V-2x6 support
Systems where a 10-year warranty and Gold-tier efficiency matter

Not for

Builds needing more than 1000W of continuous headroom
Buyers who need the smallest possible SFX/SFX-L footprint
Cost-sensitive builds better served by a lower-tier 80+ Bronze unit

FAQs

What are the key specifications of the Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier)?

The Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier) is a power supply from Antec. Key specs: Wattage 1000 W, 80 PLUS Rating Gold, Cybenetics Efficiency Gold, Cybenetics Noise A, Modularity Fully Modular.

Will the Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier) work with my current setup?

The Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier) lists Wattage is 1000 W. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier) best suited to?

It suits builders targeting an rtx 4080/4090 or rtx 5080/5090-class high-end gaming build, anyone who wants fully modular cabling with native 12v-2x6 support, systems where a 10-year warranty and gold-tier efficiency matter.

What are the drawbacks of the Antec HCG1000 Gold Extreme (1000W/80+ Gold/ATX 3.0/High-End/Multi-Gpu Tier)?

It is a poor fit for builds needing more than 1000w of continuous headroom, buyers who need the smallest possible sfx/sfx-l footprint, cost-sensitive builds better served by a lower-tier 80+ bronze unit.