Tested and working ???????? The Intel 486 DX4-100 CPU is a vintage processor from Intel, designed for use in Socket 4 motherboards. With its model number A80486DX4-100 SK051 and a 3V socket type, this CPU is a key component for older computers that rely on its processing power. As a part of the Intel 80486 processor family, it offers strong performance capabilities for its time, making it a sought-after choice for collectors and enthusiasts looking to restore or upgrade retro computer systems.