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0 pointsalwillis3d ago0 comments

> Putting the GPU and CPU together and having them both access the same physical memory is standard for phone design.

> Mobile phones don't have separate GPUs and separate VRAM like some desktops.

That's true. The difference is the iPhone has wider memory buses and uses faster LPDDR5 memory. Apple places the RAM dies directly on the same package as the SoC (PoP — Package on Package), minimizing latency. Some Android phones have started to do this, too.

iOS is tuned to this architecture which wouldn't be the case across many different Android hardware configurations.

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Aurornis3d ago

> The difference is the iPhone has wider memory buses and uses faster LPDDR5 memory. Apple places the RAM dies directly on the same package as the SoC (PoP — Package on Package), minimizing latency. Some Android phones have started to do this, too.

Package-on-Package has been used in mobile SoCs for a long time. This wasn't an Apple invention. It's not new, either. It's been this way for 10+ years. Even cheap Raspberry Pi models have used package-on-package memory.

The memory bandwidth of flagship iPhone models is similar to the memory bandwidth of flagship Android phones.

There's nothing uniquely Apple in this. This is just how mobile SoCs have been designed for a long time.

happyopossum3d ago

> The memory bandwidth of flagship iPhone models is similar to the memory bandwidth of flagship Android phones

More correct to say that the memory bandwidth of ALL iPhone models is similar to the memory bandwidth of flagship Android models. The A18 and A18 pro do not differ in memory bandwidth.

alwillisOP2d ago

> The A18 and A18 pro do not differ in memory bandwidth.

A18 Pro has a modest memory bandwidth advantage over the standard A18, which is part of why it can support ProRes recording and always-on display while the standard A18 cannot.

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