Live HEVC Encoding !

I’m a broadcaster and I already use h264 as my primary streaming profile.
I’d like to know if there are any cost effective system to encode 25 live streams to HEVC with commodity hardware and NVIDIAs products so that I can bring down the bandwidth costs.

New Pascal architecture has PureVideo Feature Set H hardware video decoding HEVC Main10(10bit), Main12(12bit) & VP9 hardware decoding and NVENC HEVC Main10 10bit hardware encoding.