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Oh I know. I have it connected through HDMI but the monitor decides to cycle through the available inputs anyways on boot. I cannot wait until I get my good monitor...
LuxMark v3.1 gives me 8344 with both the AMD and iGPU while Geekbench gives me a score of 72949 using the 460 only. Heaven crashes when I attempt to run the benchmark so I need to sort that out.
I had the exact opposite experience with FCPX. It got very unhappy with the modified HD530 info and was perfectly happy when I injected Intel HD530. Of course it got a bit more unhappy when I tried to push a 6K R3D file through it. Good thing I have test files from Canon and Sony cameras as well. The joys of working in media!
I might modify 4100kext just to get the extra OpenCL functionality. Heaven is also only benching my CPU it seems.
So many edits! I did modify my 4100kext but it didn't seem to make any difference. I am not injecting ATI since when I did that it got a little angry with the ghost monitor. I'll wait until I have a second monitor to screw around with injecting ATI.
Bottom line: if you want a relatively inexpensive graphics cards that works basically out of the box then get the Gigabyte RX 460. It may not be top of the line but it works. I'll probably upgrade later down the line
The Heaven benchmark should be able to run using this card ... I suspect that once you get the FCPX bit sorted out, it will work for you.
If you would like a slightly less stressful way of getting the 36 compute units, take a gander at page 136 in this thread for the posting by Mork_vom_Ork (post #1356). He lists a way to achieve that using only Clover config.plist editing. The third patch in that posting is not used by the RX 460 cards.
Also, I was able to get rid of that pesky ghost monitor by following the ideas from this posting (also listed here on TonyMacX86 but I cannot find the original listing at the moment):
http://www.mathewinkson.com/2013/03...ix-the-picture-quality-of-an-external-monitor
They are more cautious about taking the steps to apply the fix, but really just run the script, move the generated file to the right place and use terminal to set the user to be root and group to wheel (sudo chown root:wheel filename) and restart. For my setup, there are 100% fewer phantom monitors hanging around. I am also thinking, but do not know for certain that this may help some monitors be more compatible with OS-X as far as which color-spaces they can actually deploy.