It was the first of the new generation with efficient Maxwell chip and most cards do not even have any auxiliary power connection because it is hardware regulated to 60 watts max which the PCI express bus should be able to supply (from 75 watt spec). If that is a desktop, one graphics card which could give you better graphics without using much power or without requiring a power supply upgrade is Nvidia GTX 750 or GTX 750 Ti. Not sure if it was due to bumblebee for the dual hybrid graphics at that time, but in Ubuntu 13.10 Team Fortress 2 was unplayable with the Intel graphics, it would run very slowly and audio would repeat in short loops, but it is playable in Ubuntu 14.04 which has nvidia-prime to discretely run one graphics or the other.

My gaming laptop has both Intel HD 4600 and Nvidia graphics and when comparing them on the same laptop, besides a noticeable difference in speed (and power use/heat generated) there were some benchmarks that would not even run on the Intel graphics because it was missing some features of more advanced graphics.

Intel graphics 4600 driver