ANTEC CSK850 Pro 850W 80 + Bronze ATX 3.1 Fully Modular Power Supply

The Antec CSK850 Pro is an 850W ATX 3.1 semi-modular power supply designed for modern desktop PC builds requiring reliable, efficient, and future-ready power delivery. Carrying the 80 Plus Bronze 230V EU certification, it meets internationally recognised efficiency standards suited to the European and Indian mains voltage range of 200V–240V at 50Hz. Built around ATX 3.1 compliance, the CSK850 Pro is engineered to handle the transient power demands that contemporary platforms place on a PSU. It ships with a PCIe 5.1 12V-2x6 cable rated at up to 600W, enabling straightforward compatibility with current-generation graphics cards including NVIDIA GeForce RTX 40-series models that use the 16-pin connector standard. Power protection is handled by Antec's CircuitShield suite, which covers eight independent protection mechanisms: 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 and inrush protection (SIP), and no-load operation protection (NLO). Active PFC further conditions incoming AC power for cleaner, more stable DC output. Thermal management is handled by a 120mm silent fan paired with Antec's Thermal Manager, a low-voltage fan-control system that modulates fan speed according to thermal load, keeping acoustics low under light to moderate system demands. The unit operates across a temperature range of 0°C to 40°C. The semi-modular cable architecture lets builders connect only the cables their system requires, reducing clutter and helping maintain airflow inside the chassis. The compact 140 × 150 × 86 mm body fits a wide range of ATX cases. Certifications include TUV, CB, RCM, CE, BIS, UKCA, and KC. Key Specifications: - Model: CSK850 PRO ATX3.1 (V5000A209A-23) - Output capacity: 850W continuous - Efficiency: 80 Plus Bronze 230V EU certified - Form factor: ATX 12V 3.1 / Semi-Modular - Dimensions: 140(L) × 150(W) × 86(H) mm | Net weight: 1.95 kg - Input voltage: 200V–240V AC, 5A max, 50Hz - PFC: Active PFC | Power Good Signal: 100–150ms - Fan: 120mm silent fan with Thermal Manager - Protection: OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO - Connectors: 1× 24-pin MB; 1× 16-pin PCIe 5.1 12V-2x6 (600W); 2× 8-pin (4+4) CPU; 4× 8-pin (6+2) PCIe; 6× SATA; 3× Molex - Operation temperature: 0–40°C - Regulatory: TUV / CB / RCM / CE / BIS / UKCA / KC - Warranty: 5 years