Chieftec 850W Proton (BDF-850C)

The Chieftec 850W Proton (BDF-850C) modular power supply delivers 850 watts to power all components of a PC that may include one motherboard (20+4 pin), a processor (4+4 pin), four graphics cards (6+2 pin each), nine SATA devices, three IDE devices, and one FDD device. The unit provides 140 watts across the +3.3V and +5V rails and achieves an 85% efficiency rating, certified by the 80 PLUS Bronze standard. The power supply measures 160x150x87 mm and features a single 140mm cooling fan to maintain optimal internal temperatures.