- Forum: Current Mac Hardware
If I'm not mistaken, Thunderbolt is the equivalent of one 16x PCIe 2 lane. Really hasn't been an issue for me and my setup. This is going to be a bottleneck for high end GPU plus Kona video card, plus say a Red Rocket, no? Using a Magma external chassis. As far as I know they only have 2 slots available. A workstation, such as the HP (or a new Mac Pro) can have many multiple lane slots. Plus plenty of power and cooling.