DELL Inspiron 5480 5580 Motherboard Core i3-8145U 2.1GHz X3N60

Genuine Dell OEM replacement board for Inspiron

This motherboard is a genuine Dell OEM part with the Dell part number X3N60. It carries an on-board Intel Core i3-8145U dual-core processor running at 2.1 GHz with a maximum turbo frequency of 3.90 GHz. The board is designed specifically for the Inspiron 14 5480 and Inspiron 15 5580 laptops that use integrated Intel graphics. It will not fit models equipped with discrete graphics cards.

Sustained performance with integrated graphics

The on-board Core i3-8145U operates at a 2.1 GHz base clock and can boost to 3.90 GHz when thermal headroom allows. Because the CPU is soldered directly to the board, thermal behaviour depends entirely on the laptop’s original cooling assembly and chassis airflow. Under prolonged workloads the processor will throttle to stay within its thermal envelope, so performance settles at a level the cooling solution can maintain rather than the peak turbo figure.

Direct swap for UMA models only

Installation is a straight board swap inside the compatible Inspiron 5480 or 5580 chassis; the CPU, chipset and integrated graphics are already on the board so no separate processor installation is required. The critical step is confirming the original system uses UMA integrated graphics, because this board is not compatible with discrete-graphics variants. Mistaking the graphics configuration is the most common reason a replacement fails to post or display an image.