This is quite a amusing thread, the mental gymnastics some pull out to make a square turd fit a round hole is amazing, no modern DP2.1 support, great future proofing for a htpc watching videos?! And at a price no doubt higher than other alternatives.
All this talk about 6400 is irrelevant, the worst card AMD sells, has no place in this conversation and those bringing it up do the thread a disservice.
I would do without, use the CPU Igpu, or buy second hand rather then fluff Huang's pillow buying this, unless they price no higher than £200 dropping fast too, they won't though.