The processor socket type for this laptop is FCPGA988, and it supports Intel Core i3, i5, and i7 processors of the first generation (Arrandale and Clarkdale). The maximum processor you can install is Intel Core i7-620M or i7-620LM. You can check the official Dell website or the laptop manual for more information on the compatible processors.
Update processor inspiron N5010 I5 M480