Help picking hardware for a capture rig

[Cap_Mandrake]

I have plans to build an NGINX server setup to record 1440 - 4k videos of my gameplay to Youtube.

My current system has a xeon 1240 v 5 and a Fury, I have another Fury that needs fixing that I hope to salvage later on. My rig runs games fine, but can't seem to keep up with recording them at the same time.

If it's feasible, I'd like this rig to be capable or recording 4k 60 fps at some point in the future, when that kind of viewing becomes more popular.

I'm not sure what parts to pick for this. Cost is not a huge issue, but there's no way I'm going out to buy a 6950x, I consider that a bit unreasonable in my situation. I'm thinking that Wendell's 2 CPU old server build is a great option for this.

Server to Gaming Workstation Retrofit - 16 cores / 64gb ram | Tek Syndicate

Behold! The Dual E5-25670 stuffed in a Corsair 780T. Did you fall for the meme and build one? Converting an old server into a desktop computer isn't ever a perfect process -- and in fact in this case a Skylake i7 machine will have better performance for many things, and be about the same price or just a little more expensive unless you find a deal. I love this thing. 16 cores, 32 threads, what’s not to love? Let’s be clear here – you’re buying server hardware that is 4 generations back. We’ve got a 4-way shootout video and this thing is one of our contenders because it is a LOT of compute horsepower for not a lot of $$. However, for most normal tasks, more than 4-6 cores is just not useful even for the extreme gamer/enthusiast. So you should also know that not a lot of software can really use a rig like this. The Adobe suite, for example, has poor support even for rendering much past 4 to 6 cores so the added benefit of 8, 10, 12 cores is minimal. However some tasks, such as video transcoding with Handbrake, parallelize almost perfectly so there is linear scaling. For a home server, this platform is prettymuch unbeatable. This particular motherboard, the Asus Z9PE, has a built-in SAS controller and works great with a platform such as FreeNAS. Sixteen ram slots also means that 128gb of memory is easily possible with inexpensive 8gb Registered DIMMs. From the testing on our other video, a Skylake cpu @ 4.5ghz has the same raw computational horsepower as one of these E5-2670s but tasks (like rendering in Adobe Premiere) that does not scale well runs 2-3x as fast. We’ll cover more of that in the next video, though. So why even do a build like this? It is a lot of horsepower and is inexpensive. Of our 4 test systems, the market value of the main parts for this system (motherboard, cpus, ram) were valued at around $500-$550 . If you want a home server/workstation, the ultimate Linux box (the hardware is extremely well-supported on Linux and FreeBSD, as …

NGINX has to record the video with raw CPU horsepower, and this seems like the cheapest path to the most horsepower available.

Thoughts? Ideas? Comments?