Dell cor i3
dell cor i3 drivers
You don't need drivers for a Core i3, it should work find out of the box.
If you're refering to drivers for another component in your system, then we need to know the model of your dell.
Here is where you can find drivers for your Dell, just select what you have: http://www.dell.com/support/drivers/us/en/19/ProductSelector/Select?rquery=na