cores and licenses

We want to expand our rendering ability in house so that After effects users can utilise the render kit.
If we were to build something like this…

What does that mean for vray render license requirements for a 64core blade.?

It simply means that V-Ray will run on processors with 64-bit architecture. As far as I can see, the AMD EPYC 7501 covers those requirements, there’s even an entry in our benchmark results: V-Ray Benchmark | Chaos

As far as I can tell - it should run fine. Feel free to browse our benchmark results to compare different hardware in case there’s other CPUs you have in your shortlist. https://benchmark.chaosgroup.com/

AH! nice one thanks, had not come across the benchmark page, cheers.

Also if we were to put 4 nodes into the box we would then need 4 render licenses?

I think so, yes. You’ll only need Render Node licenses, though - those are just for rendering - you’ll need one per machine.