

So the performance is improved over discrete GPUs, but the shared memory may throttle some graphically intense applications. Graphics resources, such as textures, images and geometry data, can be shared between the CPU and GPU efficiently, with no overhead, as there's no need to copy data across a PCIe bus. means that the GPU and CPU are working over the same memory. What is Unified Memory? According to Apple: What's more, the touted Unified Memory Architecture just means that 16GB is shared between the CPU and graphics.


The new M1 iMac highlights everything that's wrong with AppleĪpple spent a lot of time emphasizing the power of the new M1 chip, but barely mentioned the 16GB memory limitation.
