MacPro7 u need fix power management. U can use CpuFriend for that.
iMacPro1 we don't need fix power management.
Under macos ur i5 go to 15k geekbench, my i9 is 19k.
Remember im using full default settings just set my XMP profile.
If u have memory 7200mhz for example geekbench result is high instead.