should i go for AMD Ryzen Threadripper 3990X
Take a look at this benchmark:
https://cpu.userbenchmark.com/Compare/AMD-Ryzen-9-3950X-vs-AMD-Ryzen-TR-3990X/4057vsm1035665
The Ryzen 9 3950X will actually outperform the TR 3990X on up to 8 core(and presumably up to all of it's 16 cores), but only falls far behind in higher core(like the 64 core benchmark). That means that the Threadripper will destroy in any all-core heavy processing, but will fall behind in lower core tasks, like gaming or as a desktop computer(which isn't your need anyways). Since Adobe After Effects seems to be single core, then you don't really need a threadripper, it may actually be outperformed in after effects. The benchmark you showed should be an all cores bench.
Here's a benchmark comparision:
View: https://www.youtube.com/watch?v=6YbcgiYja3w
If you look at the Cinebench test, you'll notice that the Threadripper destroys in the all-cores test, but loses to both the R9 3950X and the i9-10980XE in single core.
It also loses slightly in most games(being a lower core task).
There are so many great reviews of the R9 3950X. If you just want single core performance, I think the R9 3950X might actually do a little better. A TR is much more expensive and for After Effects. Take a look at this article:
https://www.pugetsystems.com/recomm...be-After-Effects-144/Hardware-Recommendations
It even recommends the R9 3900X over the R9 3950X. This is because the R9 3900X has less cores, but a higher clock speed, so it beats the R9 3950X ever so slightly in anything 12 cores or less(as it has 12 instead of the 16 that the R9 3950X has).
Ryzen 9 3950X vs Ryzen 9 3900X
Maybe consider the Ryzen 9 3900XT(it was released later than the article I believe):
Ryzen 9 3900XT vs Ryzen 9 3900X
Here is the pricing from PCPartPicker
Ryzen 9 3950X 710 USD
Ryzen 9 3900X 430 USD
Ryzen 9 3900XT 480 USD
Ryzen Threadripper 3990X an ungodly 3565 USD. The taxes on that cost more than my triple A gaming CPU lol
i9-10980XE 1130 USD, out of stock at 1000 USD
So to me, the Ryzen 9 3900X or XT are the best picks bar none. They will save you an ungodly amount of money compared to the Threadripper with better 12 core and under performance. Adobe After Effects might start supporting more cores in later versions(like it does in 2015 and older versions) in which case the Threadripper will be
2.5 times faster(at 64 core processing), but for under one seventh of the cost, the Ryzen 9 3900 XT or X will do just fine. There also is clearly no point in getting the i9-10980XE for over double the cost of a Ryzen 9 3900XT when performance is
nearly identical or even worse than the Ryzen 9 3900XT, aside from 64 core(which I assume would just be all-core) performance, according to UserBenchmark.
I'd get the Ryzen 9 3900X if I were you. Ryzen 3900XT costs more for slightly more performance, so I wouldn't recommend it. The Ryzen 9 3950X is the middle man, the i9-10980XE is just simply
worse in nearly all categories for much more of your cash. The Threadripper 3990X will just sit to rot for most of the time you own it. If you have some buddies or co-workers that could put it to good use when you aren't using it, then maybe(or even if you both use it at the same time), but in the end, the 3565 USD is just so much more than a Ryzen 9 3900X. You would get better performance and cost by buying three Ryzen 9 3900Xs and splitting the workload between 3 computers(which isn't actually practical, just making a joke).