Yep, both are installed and running now. I'll let them go a few days before I clock them at all.
Edit: Do they sit at 100% usage when you fold? Both of them seem to sit at ~85% for me according to GPU observer.
Mine usually run at 95-97% on core 17 according to GPU-Z.
If you are also running SMP be sure to give core Zeta a full CPU core, seems to help GPU PPD more that the loss in SMP PPD