BTW how did you notice that Ivy Bridge and GPU power management don't reflect as much as possible your components with an (assumed) "MacPro3,1" configuration?
I would suppose that 10.9.4 includes downward compatible "family" device drivers for the Intel CPU & Chipset + NVIDIA GPU that should ensure ideal power management.
MacPro3,1 did not come a i5 processor
MacPro3,1 did not come with a Nvidia GTX (some model did come with Quatro or GT8600)
MacPro3,1 did not have USB 3
MacPro3,1 did not have Thunderbolt
iMac13,2 has all the above but not FireWire that MacPro3,1 had.
I remember reading a post from TheKing (I will not dispute TheKing's wisdom) that MacPro3,1 was chosen for SnowLeopard compatibility OOTB with H3A BIOS, and that it might not be the best choice for Lion and up
i tried, but from that cd i cannot install the lan driver, don't know why, it says that the intel® adapter is not present. I'm on windows 8.1 64 bit. Also tried to download the last driver from intel website, same problem
UPDATE: i finally installed the driver from cd, still no option for magic packet under advanced t
I am getting confused here ..... are we actually talking about a Z77MX-AOS-QUO board or Asus Sabertooth board in your signature ?
Have you tried with another OS ?