My new desktop will have a Quadro K600 and a Intel Core i5 4570 and I am not sure if it is gonna bottleneck or not.
Yeah, I plan to have medium settings and BeamNG will probably run better with the 16 GB, and the rest will probably run better on the GPU then the horrible iGPU that was in my HP until it crashed from battery issuesThe Quatro K600 won't be bottlenecked by the i5-4570, if that is what you're asking. Not even close.
Are you planning on gaming with that little workstation video card?