NVENC capabilites not available in GeForce GT720?

hardware : GeForce GT720 (Gk208)
Drivers : 21.21.13.7651
SDK : Video_Codec_SDK_8.0.14
Cuda : 8.0
Os : Windows 7
I have compiled the video codec sdk samples but I am unable to encode any video. Following error appears
GPU 0 does not have NVENC capabilities exiting
Even though here https://developer.nvidia.com/video-encode-decode-gpu-support-matrix#Encoder it is mentioned that Gk208 supports H264 encoding

GeForce GT 720 uses GK208 but no one knows if it has encoder on scale down chip (probably none encoder like GM208 and GP108). NVidia distribute many incorrect information and unwilling/incapable to publish many basic information about its own hardware. Shame on Nvidia !
If you check https://developer.nvidia.com/video-encode-decode-gpu-support-matrix and search for GK208 - you find Quadro K5200 and K6000 but this cards have highend GK110 and not lowend GK208 - see https://en.wikipedia.org/wiki/List_of_Nvidia_graphics_processing_units.

Optionally check my stories:
https://devtalk.nvidia.com/default/topic/546409/gtx-770-and-compute-capability-3-5/
https://devtalk.nvidia.com/default/topic/934756/per-process-statistics-nvidia-smi-pmon-/
https://devtalk.nvidia.com/default/topic/992447/video-codec-and-quadro-p4000-p2000-p1000-p600-p400/
https://gridforums.nvidia.com/default/topic/823/grid-boards/tesla-m10/

Is there any way to verify that it doesn’t support NVENC

The error message you got from the sdk sample is your verification that it can’t do it. Many low end parts are missing video capabilities but nvidia do a terrible job of documenting this. The latest GT1030 also lacks nvenc.

The GeForce GT 720 does have NVENC capabilities. I was able to encode video files with ffmpeg using the h264_nvenc encoder. However, the driver needs to be recent enough for that (378.66 or newer).

My GT710 has NVENC (also GK208) but GT1030 (GP108) doesn’t - at least the current drivers (381.22) + CUDA 8.0 doesn’t support it. It’d be nice to have such info somewhere officially available :-(