Antec CSK1000 PRO ATX3.1 Power Supply Unit

The Antec CSK1000 PRO offers 1000 watts of continuous power output tailored for high-performance PC builds requiring reliability, efficiency, and future-proof connectivity. Certified under the 80 PLUS Bronze program, this semi-modular PSU delivers up to ~90% efficiency at 230V, reducing energy waste and heat generation.

Built with quality Japanese capacitors for long-lasting durability, the CSK1000 PRO supports the latest ATX 12V 3.1 standard and PCIe 5.1 interfaces. It includes the new PCIe 5.1 12V-2x6 GPU cable, enabling seamless compatibility with top-tier graphics cards such as NVIDIA® GeForce RTX™ 40 Series (e.g., 4090, 5090) and AMD Radeon 7000 series (e.g., 7900, 9070).

This power supply integrates Antec’s CircuitShield™ protection suite, which encompasses over current protection (OCP), over voltage protection (OVP), under voltage protection (UVP), short circuit protection (SCP), over power protection (OPP), over temperature protection (OTP), surge & inrush protection (SIP), and no load operation (NLO), ensuring system safety and hardware longevity.

The compact design (140 x 150 x 86 mm) and semi-modular cable layout optimize chassis airflow and minimize cable clutter. Thermal management is handled by a whisper-quiet 120mm fan with advanced low-voltage fan control for quiet operation during light workloads.

Backed by multiple international certifications (TUV, CB, RCM, CE, BIS, UKCA, KC) and a 5-year manufacturer warranty, the CSK1000 PRO ensures dependable power delivery for modern high-performance computing setups.

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Key Features

• 1000W continuous power output for demanding systems
• ATX 12V 3.1 and PCIe 5.1 compatibility with new 12V-2x6 GPU cable
• High-quality Japanese capacitors for durability
• 80 PLUS Bronze certification (~90% efficiency at 230V EU)
• CircuitShield comprehensive protection suite (OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO)
• Semi-modular cable design for improved cable management
• Thermal Manager with whisper-quiet 120mm fan
• Multiple international safety and regulatory certifications
• 5-year warranty for long-term peace of mind

Connectivity

• 1 x 24 (20+4) pin motherboard connector
• 1 x 16 (12+4) pin PCIe 5.1 12V-2x6 (600W) cable
• 2 x 8 (4+4) pin CPU power connectors
• 4 x 8 (6+2) pin PCIe connectors
• 6 x SATA power connectors
• 3 x Molex connectors

For detailed product info and support, visit the [Antec official product page](https://www.antec.com/product/power/csk-pro-atx-3-1-1000).