I've installed Mavericks successfully using clover UEFI on a machine with these specs.
Asus p8h61-m le (with patched BIOS from biosrepo)
i5 2400 (Sandy)
Thought it was all %100 but after rebooting a few times, boot got stuck at 'P-state error 18' and KPs soon after due to AppleCPUPowerManagement.kext
Strange thing is, if I leave it boot cycling, it will eventually boot. Sometimes first go, other times after 30 or more tries.
I tried enabling C-states and P-states via clover but no change. (I'm not sure the P-State error actually has anything to do with the KP)
I also tried the ssdtPRGen script and used that with clover but still no change.
I'm not sure where to go from here.
Can someone please point me in the right direction???