[vrodic]

Probably AMD, they fund open source driver development and release good documentation for their GPUs.

Intel is ok too, but their hardware is not really targeted for gamers.

That being said, if you are fine with using proprietary drivers, currently nothing beats nVidia in terms of performance, features and stability of OpenGl drivers.

You would be supporting the ecosystem with any purchase, but if you are politically inclined on free software then the choice is AMD or Intel.

[claudius]

> Intel is ok too, but their hardware is not really targeted for gamers.

FWIW, I find the latest graphics units from Intel, e.g. HD 4600, rather okay. Even graphically nontrivial things like Crusader Kings II or KSP run decently, although usually far from the highest possible settings. But on the other hand, the drivers are rock-solid, delivered directly in Debian without any fiddling around as was/is necessary for the Nvidia drivers and I don’t need my own powerplant just to run a computer :)

[anon4]

I don’t need my own powerplant just to run a computer

The Maxwell-based 750ti is the card to buy then. It's tiny, draws a reasonable amount of power and I've yet to see a game that doesn't run well on high.