I’ve been running PMS now for many years and just bought a 4K TV and 4K Apple TV. When I watch 4K content via the 4K Apple TV it streams just fine, however I also have another TV in my house that has a 1080 Apple TV (so not the 4K variety) and the 4K content will NOT stream on that device. I’m ass…

Here’s my current set up: Intel(R) Core™ i7-2600K CPU @ 3.40GHz Gigabyte Z68XP-UD3 2 x 8GiB DIMM DDR3 Synchronous 1333 MHz I just ran a 4K stream transcoding to 1080P and my CPU just maxed out instantly. So I guess that’s the bottleneck? Would replacing the 1080P Apple TV with a 4K Apple TV (e…

The problem is with your CPU. Intel chips prior to 6th gen if I remember correct do not support HEVC decoding which is necessary for 4K. On top of that 2nd and 3rd gen Core processors have infamously bad implementations of Quicksync. So you kind of have 2 options, upgrade the server hardware to a mo…

That makes sense! I think it’s time to upgrade the server hardware!! Here’s another question - what if I want to stream 4K content to 2 Apple TV’s at the same time? If I’m not transcoding, then that won’t be an issue right? It’s just whenever transcoding happens that the CPU is taxed! I’m looki…

If you are not transcoding a reasonable CPU can handle a ton of streams. My lowly NAS can definitely handle at least 10 streams if there is no transcoding and it has a Celeron J4125 in it (that is the most plays I have ever had going at once, I think it could handle a lot more). So as long as you ar…

@stevodevo On Linux, your support (righ now anyway) is the -10xxx series. The 11’s (RocketLake) require a fair amount of support added to Plex. AFAIK, it’s in the works BUT, if you want it now, the 10K is better and you will still be hard pressed to run out of GPU. You’ll run out of CPU fo…

Brilliant - thanks guys - I’ll definitely go with a 10 series then! My PMS hardware is old - so time to upgrade especially since I want to run 4K streams and transcoding.

Would this work as a 10 series CPU on Linux? [image] PassMark Software - CPU Benchmarks PassMark Software - CPU Benchmarks - Over 1 million CPUs and 1,000 models benchmarked and compared in graph form, updated daily!

That’s more than enough. I have an i7-7700 and a couple i7-8809G (NUC 8) machines. The i7-7700 can HW transcode 6 HIGH bitrate streams without running out of bandwidth in the ASIC and do tone mapping. I only run out of CPU for the audio but I took care of that by purchasing the Nvidia Shield Pro …

Brilliant - final question - I’ll need to get some DDR4 RAM because my current set up is DDR3. How much RAM is enough for a home system? 16GB do the trick?

Do NOT get an F sku, they do not have integrated graphics which you need for hardware based Quicksync transcoding, and yes you’ll need to get DDR4 memory. 16GB should be more then enough.

Where is the bottleneck for transcoding 4K?

Plex Media Server

TeknoJunky September 29, 2021, 10:00pm 18

this thread @ Plex, 4k, transcoding, and you should be a good intro into the consequences of building your 4k library.

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best server for 4k transcoding? General Discussions	11	17793	January 8, 2020
Transcoding 4K Requirements Plex Media Server server-windows	129	44414	January 8, 2020
Current Status Of Plex & 4K Transcodes General Discussions	12	540	September 24, 2021
Jerky playback on AppleTV for UHD versions of media Plex Media Server server-linux	8	289	March 13, 2021
Which CPU is the most affordable, but can easily handle 4K Transcoding? General Discussions	27	12094	January 7, 2020

Where is the bottleneck for transcoding 4K?

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