could have its own resolution?
Yep.
Is it true that only the P8Z77-V and up (that are delivered with Fan Xpert 2) have case fan headers that can control speed either by PWM or voltage control? I thought I read lower end boards such as the P8Z77-V LX and others that come with Fan Xpert +, while they can download Fan Xpert 2 update, that the case fan headers on those boards can only control fan speed via PWM, but I wasn't sure.
Fan Xpert+ control is PWM only. So I suppose the answer is to use PWM fans if you want
that feature to work. Not sure what happens if you use Fan Xpert II on a Fan Xpert+ board off the top of my head, as I have never tried it.
-Raja