Do intel i7 processors not use more than 1066mhz ram?

You know, if I didn't just buy a new board and liquid setup for it, I'd go buy a new 980x.

As others have said. It can definitely support well over 1066MHz. The QPI doesn't have a limitation, so much as the limitation in voltage. Much over 1.66 for RAM will toast the QPI.
 
Assuming your RAM is DDR3-1333 from the factory, it will run at that spec. Do remember to reset your board's BIOS to avoid over/under voltage and incorrect settings.
 
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