First time posting i hope this helps. I recently upgraded from k620 QUADRO to a P400, I AM Able to transcode 18 1080p STREAMS to 720 or 480. if mobile.
4 total streams at 4K For DIRECT Play using Roku x1 1 4k fireS 1x Samsung Smart tv 1 Apple4K*.
I put an asterisk on the direct play because in the right state of mind you DO NOT want to transcode a 4k movie to 1080 or 720. You are pushing your system to do something it can but shouldn’t do.
Resources should go as to stability and performance, such as those 18 1080p streams transcoded to 720.
4K, as tested, will consume from 80 to 100% of the HW using the p400 With only 1 or 2 the most before it starts having a stroke… and I mean this in a prioritization manner.
If i may make a suggestion, do not allow other people (friends or family), access to the 4K folder, as they will transcode regardless of being home or not.
Put those 4k in another library and only use it for yourself for direct play. This was mentioned previously in another forum post.
currently Operate with the following
LINUX UBUNTU Flavor : 20.4
32GB DDR4 Ram
AMD 3600X NO overclocking
STOCK Cooler for CPU.
QUADRO P400 Upgraded from Quadro K620.
NVME 1TB HD for both the plex and OS, 1 SSD 500gb FOR Transcoding ( NOT BEING USED , JUST THERE FOR if i decide to switch) and the Swap at a decent 20GB.
2 - 12gb WD DRIVES
4- 8GB WD REDS
if need to know the PSU is 650.
The only thing I notice and it goes away after restart is if I do something intensive such as use handbrake for more than 20 files to decrease size sometimes it shows a little lag. But I’m talking about a slight lag. ( But you guys know that we like our stuff snappy so a restart takes care of that)
UPDATE: 9/6/20
Definitely might be the card since i just put mine through the BIGGEST STRESS in the world.
Opened the case for more air and tried more transcoding of 4k.
Heres what i got:
2 = 4K transcodes = 1080P 3rd 4K Direct Play. GPU WAS AT 98%
6 = direct plays 1080p 3 1080p to 720p transcodes = 100% usage. EVERYTHING Caused the server to stop. LOL
EVERYTHING. i couldn’t even close the streams because plex kept them in memory.
That 3rd transcode for 4K was stuttering and seemed to be in a pending state.
So, as i tried to jump out of the hole i dug myself into i restarted the server and tried again.
The p400 did not want to transcode 4K pass the 1 stream mark.
The CPU did 1 once i removed it from the system.
My suggestion which i am currently testing right now is the k620.
depending on your usage I am able to play 12 solid transcodes(1080p to 720p) and 5 direct plays in which 2 of those were 4K To apple and Samsung SmartTV without stutters and still am able to navigate smoothly the OS and or browser.
The lagging/buffering came at the 6th direct play or 1 transcode (1080p to 720), the server seemed not to want to operate for ZHIT. but… once i turned off 1 of the transcodes it all stabilized.
To summarize:
K620 QUADRO
MAX 12 TO 13 TransCo ( 8 for solid performance)
2 DIRECT 4K’s + 5 TO 6 SOLID 1080P DIRECT PLAYS.
LOL hope this helps anyone that needs some questions answered and some tests to be done.
