Are the Xs not as good as the Turbos? The Turbo is about $40 cheaper on Newegg, apparently.
That said, I did pay for an X - I just didn't realize there was more than one model of the IceQ 7870, so it's my bad. I'm sure X will be fine for my purposes
Edit: Ah - I see the turbo is pre-overclocked. That explains that. I'm guessing I can just do that manually, though