CPU and GPU when what?

[mixup]

For Gaming it is pretty clear that a good cpu (i5-4760K) and the best possible GPU (GTX980(ti)) is requierd. But when it comes to Workstation's, servers and rendering I don't understand when two xeon's (18 cores each) are better than multiple graphics cards. Would 4 amd w9000 cards with two 18 core xeons be good for an Open GL application like cinema 4d be? or would be one i7 with those card's alone be enough? Or could this amount of cores work without a card well?

 

Please explain me the most inportant hardware in workstations with scenario examples because I'd like to learn more about this topic.

[ADZ_123_!"£]

They where making a render farm which is nearly all done on the cpu, hence the 2 xeons and they put to titan X's in there aswell.

[Altecice]

For Gaming it is pretty clear that a good cpu (i5-4760K) and the best possible GPU (GTX980(ti)) is requierd. But when it comes to Workstation's, servers and rendering I don't understand when two xeon's (18 cores each) are better than multiple graphics cards. Would 4 amd w9000 cards with two 18 core xeons be good for an Open GL application like cinema 4d be? or would be one i7 with those card's alone be enough? Or could this amount of cores work without a card well?

 

Please explain me the most inportant hardware in workstations with scenario examples because I'd like to learn more about this topic.

 

Its dependent on the rendering software. Most programs use the CPU to render the frames so in this way the more CPU cores you have the more the render has to tell what to do.

 

But some programs (or settings in programs) can use the GPU to help accelerate rendering, in this case you would want more GPU horsepower.

[fabiusp98]

As said by Altecice it depends on the program that are you using, In Sony Vegas for example, the gpu can help render overlays like text or moving images but stuff like green screen, video cutting and scaling, alpha(transparency) and encoding are done by cpu.