It looks like the Raspberry Pi 3 may be powerful enough to output 4K video, but I haven't seen anything about it anywhere.
Does anyone know if the Raspberry Pi 3 can output video over HDMI at 4K resolution? If so, is it 30Hz or 60Hz?
The best information I can find suggests that it's possible to output 4K resolutions, but at fairly miserable frame rates. The Pi 3 has the same GPU as the Pi 2, so the information should still be valid:
I have managed to get 3840 x 2160 (4k x 2k) at 15Hz on a Seiki E50UY04 working under two distributions on the Raspberry Pi... (Latest Wheezy/Openelec). The television shows it is receiving this resolution and hertz level, and it looks very crisp.
This is my config.txt for wheezy:
# uncomment if you get no picture on HDMI for a default "safe" mode #hdmi_safe=1 # uncomment this if your display has a black border of unused pixels visible # and your display can output without overscan disable_overscan=1 # uncomment the following to adjust overscan. Use positive numbers if console # goes off screen, and negative if there is too much border overscan_left=-150 overscan_right=-150 #overscan_top=16 #overscan_bottom=16 # uncomment to force a console size. By default it will be display's size minus # overscan. #framebuffer_width=3840 #framebuffer_height=2160 # uncomment if hdmi display is not detected and composite is being output #hdmi_force_hotplug=1 # uncomment to force a specific HDMI mode (this will force VGA) hdmi_group=2 hdmi_mode=87 # uncomment to force a HDMI mode rather than DVI. This can make audio work in # DMT (computer monitor) modes #hdmi_drive=2 # uncomment to increase signal to HDMI, if you have interference, blanking, or # no display #config_hdmi_boost=4 # uncomment for composite PAL #sdtv_mode=2 #uncomment to overclock the arm. 700 MHz is the default. #arm_freq=800 # for more options see http://elinux.org/RPi_config.txt hdmi_ignore_edid=0xa5000080 hdmi_cvt 3840 2160 15