I took a quick look at that link that you attached and it looks like that is a program that already utilizes the gpu for the simulation. I spoke to Nvidia about this at SolidWorks World. For ansys and other programs that have been built to utilize gpu the workstation cards and the Tesla card that they mention can be used to speed up the simulations. Unfortunately in SolidWorks, this is not possible.
The processor that you mention can be overclocked fairly easily, especially if you upgrade to liquid cooling. This would be the only quick way to speed up your simulations.
SolidWorks Simulation is not coded to use the GPU.
Overclock your cpu, get yourself SSD drives (there are a lot of writes to disk in simulation). Be sure you have a good amount of memory so everything stays in RAM.
Is still true with solidworks 2017?