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Antec GSK1200 AU 1200W ATX Power Supply

Antec GSK1200 AU 1200W ATX Power Supply

SKU:PSA-GSK1200

The Antec GSK1200 AU is a 1200W full-modular ATX power supply designed for high-performance systems. Featuring 80 Plus Gold efficiency, ATX 12V 3.1 support, and comprehensive protection circuits, it delivers reliable power for demanding workloads and gaming builds.
Regular price $221.43 AUD
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Product Information

BrandAntec
CategoryPower Supplies
SKUPSA-GSK1200
AvailabilityOut of Stock
Antec GSK1200 AU 1200W ATX Power Supply$221.43
$221.43
Overview
  • The Antec GSK1200 AU is a professional-grade 1200W power supply engineered for demanding computing environments. Built with full-modular cabling, it simplifies system integration whilst maintaining clean cable routing for improved airflow and system aesthetics.

    With 80 Plus Gold certification, the GSK1200 AU delivers industry-leading efficiency, reducing operating costs and heat output in both single and multi-GPU systems. The ATX 12V 3.1 specification ensures compatibility with next-generation components, including PCIe 5.1 graphics cards and high-power CPUs.

    Comprehensive protection circuitry—including over-current, over-voltage, under-voltage, short-circuit, and thermal protection—safeguards your system during power anomalies. The 120mm FDB silent fan operates efficiently across temperatures from 0–40°C, making it suitable for data centres and performance environments.

    Backed by a 10-year warranty, the GSK1200 AU is built for systems that demand reliability and longevity.
Specifications
ModelGSK1200 ATX3.1
Power Output1200W
Form FactorATX 12V 3.1
Modular TypeFull-Modular
Efficiency Rating80 Plus Gold
Input Voltage100V–240V
Input Current15A–10A
Input Frequency50Hz–60Hz
Power Factor CorrectionActive PFC
Operating Temperature0–40°C
Fan120mm FDB Silent Fan
Dimensions140mm (L) x 150mm (W) x 86mm (H)
Motherboard Connector1 x 24-pin (20+4)
CPU Power Connectors2 x 8-pin (4+4)
PCIe Power Connectors2 x 16-pin (12+4) PCIe 5.1, 5 x 8-pin (6+2)
SATA Connectors9 x SATA
Molex Connectors4 x Molex
Power Good Signal100–150ms
Protection FeaturesOCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO
CertificationscTUVus, TUV, CB, RCM, CE, FCC, BSMI, 3C, KC, UKCA, ICES
Warranty10 years
Key Features
1200W capacity with 80 Plus Gold efficiency rating
Full-modular cable design for cleaner builds and easier cable management
ATX 12V 3.1 compliant with PCIe 5.1 support
120mm FDB silent fan for efficient cooling
Comprehensive protection: OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO
10-year warranty for long-term reliability
Active PFC and 100–240V input for global compatibility
Ideal For
High-performance gaming systems and workstations
Multi-GPU setups and data centre builds
Content creation and video rendering systems
Server builds requiring redundant or scalable power
System integrators and IT professionals seeking enterprise-grade reliability
FAQs
Is the Antec GSK1200 AU suitable for gaming systems?

Yes. With 1200W capacity and PCIe 5.1 support, it's ideal for high-performance gaming builds with multi-GPU configurations or power-hungry components like RTX 40-series graphics cards.

What does 80 Plus Gold efficiency mean?

80 Plus Gold means the power supply converts at least 90% of input power to usable output at typical loads. This reduces electricity waste, lowers operating costs, and decreases heat generation in your system.

Why choose a full-modular power supply?

Full-modular designs allow you to connect only the cables you need, improving airflow, reducing clutter, and making system upgrades and troubleshooting easier compared to non-modular units.

What protection features does the GSK1200 AU include?

The power supply includes over-current (OCP), over-voltage (OVP), under-voltage (UVP), short-circuit (SCP), over-power (OPP), over-temperature (OTP), surge (SIP), and no-load (NLO) protection to safeguard your components.

How long is the warranty?

The Antec GSK1200 AU comes with a 10-year warranty, providing long-term peace of mind for professional and enthusiast users.

Is this power supply compatible with older systems?

Yes. The GSK1200 AU supports 100–240V input and includes standard ATX connectors, making it compatible with most modern and legacy systems. However, verify your motherboard and case support for 1200W capacity.

What is the operating temperature range?

The GSK1200 AU operates safely between 0–40°C, making it suitable for standard office environments, data centres, and temperature-controlled server rooms.

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