CPU: AMD Opteron™ 6274 @ 2200 - 4x CPU - 64 Core no hyper threading
Memory: 60 GB Multi-bit ECC
Storage: 62TB
I have never hit my max cpu %6400 with any number of 1080 transcodes but I have hit about %80 with 6x 4k transcodes in Plex. A 10bit 4k with ffmpeg hits about %20 can’t get more out of the cores even when I add extra threads in ffmpeg, ffmpeg maxes me out at 16 threads per encode
Since my threads(CPU’s) are at a 2200ghz freq, It limits how many encoding fps I can achieve, this is because I can only use 16 threads per encode and each thread process’s a job at 2200ghz. Some systems have low core count but can achieve many times greater fps encode then me, This is because they have a single core freq that is higher then mine, Say 4000ghz. Further more if I offload my encoding jobs to a GPU like the Nvidia NVENC you will be shocked at the performance. They have a more specific method of transcoding software with there GPUs. The software is very fast and able to take advantage many many GPU CUDA cores. I can achieve about 24 fps 10bit 4k with a old NVIDIA Quadro P400, The card still only uses about %80 of the cpu’s cores in this. A extra little bit of info about the NVIDIA Quadro cards is that if you use a linux system and specific drivers you are able to use unlimited encoding/decoding streams, Unlike the Geforce cards that have a 2 encode/decode software limit. The NVIDIA Quadro P400/P600 is a great idea for any one looking to build a small form factor system really inexpensive and very low power. A NVIDIA Quadro P400 and a i3 intel would get you lots of transcoding power 6+ 1080 of course make sure to have a fast storage, NIC & memory so it can handle the bandwidth.
just a little food for thought
