https://www.techpowerup.com/269508/apple-to-develop-the-metal-family-of-gpus-dump-amd-radeon
 
In the next big step toward complete silicon independence, Apple is planning to dump AMD as a supplier of discrete GPUs in the near future, closely following its decision to dump Intel and the x86 machine architecture in favor of its own SoCs based on the Arm machine architecture. The company is developing its own line of discrete GPUs under the "Metal GPU Family," a name borrowed from its own Metal graphics API.

This explosive bit of information comes from a WWDC 2020 presentation slide posted by Longhorn (@never_released) on Twitter. The slide suggests that along with the processor, Apple is making a clean break with its graphics hardware. The SoCs powering client-segment Macs, such as future iMacs or MacBooks, could feature iGPUs based on this graphics architecture, while larger platforms such as MacBook Pros, Mac Pros, and iMac Pros of the future could feature Apple's own discrete GPUs.
 
I fully expected Apple to start a discrete GPU development. Apple wants to make all of its own components for everything they manufacture.
 
 

aka_STEVE_b
and you think Nvidia is overcharging for cards.?- just wait until you see an APPLE branded video card going for $ 5000.00  with specs matching a card from the 80's      

and yet... still a lot of folks will buy it.....  

Dumping team blue and now team red. Might soon dump themselves...

I know most people use Macs for video rendering & editing... they're going to either see a huge drop-off in performance or they're gonna have to step their game up for a discreet GPU.