[nbzklr]

So he plugs two modern GPUs into the PCIE slots and calls that

> Truly a testament to the engineering that went into designing the 2009 Mac Pro.

I'm sorry but you can upgrade any computer from 2009 in exactly the same way. That's the beauty of using standards you know?

[PascLeRasc]

Not really for prebuilts, most Dell or Asus systems will just have one PCIe slot, and if they have two they won't support Crossfire, not to mention they probably won't have enough 6-pin connectors.