A Dell running x86 OS X is still a Dell, but at the same time, its better than a Dell running Windows.....

Lets not forget that big portions of the hardware in a Mac are no different to PCs. I'm talking drives, RAM, network cards, some graphics cards, and very likely a few of the cips on the logic board (ATA and memory controllers etc maybe) are no different to the versions used in PCs. Apple often just tweaks the firmware.....