First question that needs to be asked before we talk any specs is:
What is your total Input count that is needed?
What is your total Output count that is needed?
What format does your I/O's need to be? (HDMI, SDI, DP)
What distances will this machine be from your I/O sources?
Finally, What is your budget?
In terms of Resolume, More cores for a CPU isn't better. Higher base clock speed is king. Having at least 4 cores is good enough, you really don't need more past that point.
One other thing you need to keep an eye on is how many PCIe lanes your CPU will support. This is Key for having a lot of I/O.
Same goes for those using Adobe AE, AE renderer only uses a single core. (There are other methods, but that's a discussion for a different thread.). And if you're doing c4D GPU rendering is a much smarter and budget friendly option.
Most of Resolumes work is done on the GPU. If you're doing a ton of deck switching, having a beefy CPU and system memory will help, but from what i'm reading into this setup, I have a feeling this is going to be used as a cheap alternative to something like an E2 or Spyder, so CPU (and the large budget that follows) shouldn't be the focus of this build.
This is a handy tool when searching for specific feature when it comes to CPU's: https://ark.intel.com/content/www/us/en ... d-Min=3600
For a CPU, I'd recommend looking at these options: https://ark.intel.com/content/www/us/en ... 608,198019
All of these have a base clock speed clost to 4Ghz and at least 48 PCIe lanes. Also these CPU's are all under $1k. Most are Xeon's but there is a single i9 in there as well (incase you don't want to go down the Xeon route).
IMO the W-2245 seems to be the best bang for the buck: https://ark.intel.com/content/www/us/en ... 0-ghz.html
For a MOBO get something with as many PCIe slots as you can for extended I/O builds.
With the new 3000 series from nVidia coming out, a 3070 is essentially a 2080ti but your only spending roughly $400 vs $1200 (sucks for those 2080ti owners lol)
If you need your output sync'd then Quadro is the way to go (along with some FX4's).
System memory should be at least 16gb these days (for how cheap it is), I start my builds at 32gb and go up to (and not over) 64gb
At least 1tb of nvme storage for OS and then some SSD sata's for content storage (I prefer Samsung).
I/O and budget really will determine what I/O cards is needed.
I would stay away from anything BMD.
Hope this helps.
Reply back with your I/O needs and your budget if you can.