Metal backend is currently only M1 compatible, which is a shame, but still super exciting that they added it at all. Really great to see Apple contributing to the project, plus I think they mentioned they plan to make the Cycles Metal backend compatible with older Macs in the future. Might be able to finally make use of those Radeon cards in older high-specced Macs!
EDIT: Looks like I missed that it's also already compatible with AMD cards in older Macs, they just have to have the latest OS installed!
To be fair, the original announcement about upcoming Metal support did state that the support for Apple GPUs was the first priority, with AMD GPU support at a later date, so itβs nice to see both supported right out of the gate.
EDIT: Looks like I missed that it's also already compatible with AMD cards in older Macs, they just have to have the latest OS installed!