JEMC on 20 June 2016
Looking at the listed Inspiron 620 specs I found over at engadget, I think you have a 300W PSU.
Without changing it, you're best with a card that use less than 75W, and that currently limits you to one of the GTX 950 cards that have no extra power connectors or a 750Ti.
Please excuse my bad English.
Former gaming PC: i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Current gaming PC: R5-7600, 32GB RAM 6000MT/s (CL30) and a RX 9060XT 16GB
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.
