While the CPU performance required for professional workloads varies depending on task, many workstation PCs would perform better with a more powerful graphics card than an overclocked, quad-core or octa-core processor.
Wait what ? Seriously didn't do your homework here.
Professional workstation require less GPU power the CPU power, in fact the more powerful the CPU the better.While there is some GPU usage, it isn't nearly as demanding as gaming for example. 3D modeling for example, can be done on on-broad graphics no problem, there will be some performance issues here and there.
However 3d modeling isn't just isolated to just the modeling software as it requires an entire suite of software for a completed workflow.
Workflows for professionals contain, among others, 3D app, photoshop/gimp ect and an external 3d rendering app, like Marmoset toolbag, which renders content often at full detail, meaning an 3d asset may contain 300k or more polygons, before, ambient occlusion and additional normals are baked and rendered, which requires, both a beefy GPU and CPU.
Even CAD workstations would require decent performance.Graphics designers usually have to do some 3d rendering, pending the task that needs to be done and rarely it is just one software suite in use, it's far less reliant on the GPU then the CPU, once a graphic designer starts applying filters in photoshop you wish you had a 4 or more core CPU under the hood than a GPU that is going to sit idle 50% of the time.
Seriously ill informed writer.