hello everyone, i am planning to assemble the workstation for ansys( mainly mechanical and simulation ) high load applications with larger models for detailed modelling, for which i have selected the following 

ryzen 3960x threadripper, 24 cores,3.6 mhz base to  4,5 max,PCIe 4.0, 4 memory channels, 128 gb (16 x 8) ddr4, 3600 mhz ram, 1 tb nvme ssd, however i am confused about the graphic card for gpu acceleration as the choices are very limited for mechanical and also a confusion that do i need two seperate gpu for display and gpu acceleration and how beneficial  is gpu acceleration in combination with above mentioned cpu system. i would welcome any suggestion as the gpu is quite expensive.

thanks in advance