What is crucial? Graphics card alone probably not… Processor? What's up with the clock frequency?
Sorry I do not know all that well yet, but I really need a laptop and want to inquire before I buy an overpriced one
What, and above all, what do you render? Most 3D programs render todayrutage with graphics card, so that's pretty important. But you should not necessarily save on CPU and RAM on a render machine.
If you really want to actively render, you should also consider whether you do not want to buy / build a PC, which is better for the same price.
In the end we would of course have to know what price you are aiming for to give you a better recommendation.
Depends on what you render. Often, the CPU is used, in some programs, the GPU can support the CPU, some things are completely rendered on the GPU.
The clock frequency is pretty bland, as newer and better CPUs can often do more operations per clock, thus delivering more performance despite the same or even lower clock than older or less efficient CPUs. In addition, there are just the different numbers of cores, just when rendering this can make a big difference.
Since laptops need to save power and cooling power is very limited, it almost always uses "cropped" versions of CPUs that have lower clocks or fewer cores than their desktop counterparts. Therefore, laptops are usually not very good at rendering.
This is difficult. Does it have to be a laptop? With normal PCs, you get significantly more power for the money.
As a layman you will hardly have a look through the hardware, especially with laptops this is extremely complicated. If you stay with a generation, number of cores and tact make the difference. But there are not one, but umpteen (30?) Different generations, which - especially in the notebook market - are all different in performance.
An old CPU with the same number of cores and Mhz can be faster than a current one, if the old one is designed for high performance and the new one for power saving. Similarly, an old i7 top model may be slower than a current base model.
Therefore always get help for comparisons, eg. Do you search Google for "CPU1 CPU2 userbenchmark". Then you get a comparison page which shows which one is stronger. The same with graphics card.