Antec CSK850 PRO ATX 3.1 Bronze SMPS

The Antec CSK850 PRO is an 850-watt semi-modular power supply built on the ATX 3.1 standard, making it a forward-compatible choice for modern PC builds that demand reliable, stable power delivery. Certified to the 80 Plus Bronze (230V EU) efficiency level, the CSK850 PRO is engineered to minimise heat output and reduce energy waste during continuous operation, helping keep your system cooler and quieter over long sessions. At the heart of the CSK850 PRO's safety profile is the CircuitShield protection suite — a comprehensive set of industrial-grade safeguards covering 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). Together, these protections shield your components against a broad range of power anomalies. The included PCIe 5.1 12V-2x6 connector (rated up to 600W) ensures seamless compatibility with the latest discrete graphics cards, including those from the NVIDIA GeForce RTX 40 Series. Active PFC further improves power factor correction, contributing to a stable input draw across the supported 200V–240V input range. Cable management is simplified by the semi-modular design: the 24-pin motherboard and CPU cables are hardwired, while peripheral cables can be connected only as needed, reducing clutter and improving airflow inside the chassis. A whisper-quiet 120mm fan, governed by Antec's Thermal Manager fan-control system, adjusts speed based on thermal load to balance cooling performance with acoustic output. The compact 140mm depth allows the CSK850 PRO to fit a wider variety of ATX cases compared to longer power supplies. Antec backs the unit with a 5-year warranty and holds regulatory approvals from TUV, CB, RCM, CE, BIS, UKCA, and KC — confirming broad compliance across international markets including India. — Verified Specifications — Model Number: V5000A209A-23 | Rated Output: 850W continuous | Form Factor: ATX 12V 3.1 | Modular: Semi-Modular | Certification: 80 Plus Bronze 230V EU | PFC: Active | Input Voltage: 200V–240V | Input Current: 5A Max | Input Frequency: 50Hz | Fan: 120mm Silent Fan | Dimensions (PSU): 140(L) × 150(W) × 86(H) mm | Net Weight: 1.95 kg | Operation Temperature: 0–40°C | Connectors: 1 × 24(20+4)-pin MB, 1 × 16(12+4)-pin PCIe 5.1 12V-2x6 (600W), 2 × 8(4+4)-pin CPU, 4 × 8(6+2)-pin PCIe, 6 × SATA, 3 × Molex | Protections: OCP, OVP, UVP, SCP, OPP, OTP, SIP, NLO | Regulatory: TUV / CB / RCM / CE / BIS / UKCA / KC | Warranty: 5 Years