GPU render farm

Hello, I am building a render farm for work, I see different answers to the same question. Which type of card is best for rendering with Cinema 4D redshift and also can be used with After Effects and Unreal engine? I have been deciding from the A6000 card or the Geforce RTX 4080 Ti. which card is best for Rendering? i am a bit new at this and i am not sure. Also is there a formula to spec out a pc for this to work as efficiently as possible, such as number of cpu cores, ram etc… Any advice will help thanks

I forgot to add it will be a 4 or 8 GPU frame and also looking for management software

Hi Brian, this is a bigger question, with lots of dependencies…
do your apps work well, scale well across multiple GPUs in the same chassis, same OS instance?
would you add virtualization, to isolate each GPU from the next, for a single GPU app to be run in multiple single GPU instances?
what scene size do you need to render, to have it fit into the GPUs framebuffer - more fb on Professional GPUs than on gamer GPUs - would you even exceed the 48GB of the high end PRO cards, would you want to use NVlink to allow for bigger datasets?
do your raytracers use=benefit from RT cores?
do you care about the noise of the kit? (render farm would typically indicate a serverroom dimension of many servers, with air, even liquid cooling etc. - noise wouldn’t matter) or is it important to you to reduce noise to a minimum, then you will want to stay with activly cooled GPUs, not the passivly cooled datacenter GPUs…
Really think this needs extensive consideration and discussion, perferably with a local expert partner, that you could then purchase the parts from?
hope this helps towards the next step? regards
-Frank