Antec SF850X 850 Watt 80 plus Gold Small Form Factor Power Supply

The Antec SF850X is an 850-watt power supply built in the Small Form Factor (SFX) chassis, making it a strong candidate for compact PC builds where space is at a premium. Despite its reduced footprint, it carries an 80 Plus Gold efficiency certification, which means it meets independently verified efficiency thresholds at typical load levels — helping to reduce heat output and energy draw compared to non-certified units. SFX power supplies have become increasingly relevant as mini-ITX and small-form-factor desktop cases grow in popularity among enthusiasts who want powerful hardware in a smaller enclosure. The SF850X delivers 850 watts of continuous power, which is sufficient headroom for high-end CPUs paired with current-generation discrete graphics cards without requiring a full ATX unit. The 80 Plus Gold certification is an independently verified standard covering AC-to-DC conversion efficiency; Gold-rated units are required to achieve at least 87% efficiency at 20% load, 90% at 50% load, and 87% at 100% load on a 230V supply — reducing wasted energy as heat under real-world workloads. Verified Specifications: - Model: SF850X - Brand: Antec - Wattage: 850W - Efficiency Certification: 80 Plus Gold - Form Factor: SFX (Small Form Factor) - SKU: SF850X Note: Cable configuration (modular/semi-modular/fixed), connector types, fan size, dimensions, and warranty terms are not confirmed by available source data and have been omitted. Buyers should verify current connector compatibility with their specific motherboard and GPU before purchasing. Currently available in India from ₹14,899 with stock confirmed. Compatible with builds demanding Gold-rated efficiency in a compact chassis