I was wondering if someone could explain this lack of performance I´m faced since I´ll try to run this MP 1.1 Facts : - MP 1.1 2 x DC 2.66 - 7 GB DDR2 667 - FWM 1.1 - OSX El Cap. 10.11.5 - 240GB SSD - GPU HD5770 1GB GDDR5 - non EFI ! When I´m benching this MP for ex. in cinebench the HD5770 only gains to 25,3fps OpenGL which represents an very poor reslut. An orig. Apple 5770 should be arround 37fps what I´ve seen. Does someone knows the root cause for this lack, or is the non EFI the reason for this poor performance and should improve after flash ?