Update:
Experimental AMD M5100 2GB support (AMD Radeon R9 M370X 2GB)
This card has been produced in many variants, currently I know of at least three different types and ident strings:
Type | ident | BIOS version | device-id | working |
---|
Green AMD PCB | 109-C93157-00A_03 | W5170M | 6820 | yes |
Blue AMD PCB | 109-C42271-01_02 | W5170M | 6820 | most likely |
Red DELL PCB | 109-C42241-01_02 | M5100-DELL | 6821 | yes |
--
Have just updated the former
post with a new vBIOS for the Dell card (red PCB with ident 109-C42241-01_02). It has a slightly different GPU type and so both vBIOS versions are not exchangeable - so do not pick the wrong version, it will end in a bad flash and it will be hard to recover.
The benchmarks are giving nearly the same results, Valley is 20% higher, GeekBench OpenCL and OpenGL about 10-15% higher, MetalBench the same.
This GPU will be identified by the macOS as
AMD FirePro M5100 and by MetalBench and GeekBench5 as
AMD Radeon R9 M370X.
Warning:
This card is easy to install but
complex to manage during the initial software installation. You need to install OpenCore in advance and add the changes posted before booting into macOS.
The card will not boot into macOS without the adjusted CAIL values in the config.plist.
Test:
iMac11,1, sleep and wake fully functional
iMac12,2, sleep and wake broken, disable system sleep!