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Apple has built its own Mac graphics processors


Like iPhones and iPads, Apple Silicon Macs will use an Apple-designed GPU – something that makes complete sense when you consider this is how current iOS devices work. But it could be a reason for pause by some high-end users during the transition period from Intel-based hardware.

Tile Based Deferred Rendering

You see, while Intel Macs contain GPU’s from Intel, Nvidia and AMD, Apple Silicon Macs will use what the company seems fond of calling “Apple family” GPUs. These use a rendering system called Tile Based Deferred Rendering (TBDR), which iOS devices already use.

It works differently from the Immediate Mode rendering system supported in Intel Macs: While the latter immediately render imaging data to device memory, the former makes more use of the GPU by sorting out each element first before submitting it to device memory. 

You can find out more here.

What advantages does it bring?

The effect is that TBDR rendering delivers lower latency, higher performance, lower power requirements and can achieve higher degrees of bandwidth. The A11 chip and Metal 2 really consolidated this technique.

Current developer-system Macs use an A12 chip, and Apple is now on course to deliver an even more powerful system in the iPhone 12’s anticipated A14 processor. 

Copyright © 2020 IDG Communications, Inc.



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