Is there any 4K graphic card working on netbsd (maybe HD7850) ?

[Lothar Scholz <scholz.lothar%gmail.com@localhost>]

I want try netbsd for developing software. Unfortunately i have a very demanding monitor setup. 4 Monitors (three 1920x1200) and one 4k 3820x2160. 

I could just use two Radeon HD5450 in this machine but this gives me only Full-HD on the 4k monitor and i have no idea if this wouldn't screw up my Hackintosh (by finding unused cards).

I'n thinking about using an older HD7850 but is it now supported. There is a confusion among the many non frequently updated pages i found. 

I only need enough 3D acceleration to run GOME but with all this screen i really need accelerated 2D.