I have an Acer Veriton X4618G that I am using as an HTPC. I currently have an EVGA GT 610 video card installed, which is only a total of 15mm thick (that is about the thickest I can fit in the case). I recently got a new TV that supports 4k resolution. The GT 610 does not support that high of resolution, so I want to get an upgraded card. The problem is that I can only get a card that is a maximum of 15mm thick (including heatsink), and I cannot find any that support 4k resolution. Any ideas?