satel said:
I know that one is 4k but I'm wondering if this one is 4k as well: Toshiba Satellite S55-C5138
That is claimed for it. However, I haven't been able to find whether it's HDMI port is 2.0, which is needed for fully-blown UHD. (HDMI 1.4 supports 4k resolution, but only at 30 fps. It also usually lacks HDCP 2.2, digital copy protection for some 4k content.)