Apple Silicon M1 Die-Shots

Re:Apple Silicon M1 Die-Shots by FartyMcFarter on Saturday December 26, 2020 @07:54PM (#25547796)

What is a "system cache" ? Is that an L3 cache?

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Re:Apple Silicon M1 Die-Shots by my123 on Saturday December 26, 2020 @08:03PM (#25547858)

The system-level cache isn't an L3 cache specific to the CPU only, it's common across all the blocks in the SoC.

It is used by the GPU, neural engines,... in addition to the CPU itself.

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Re:Apple Silicon M1 Die-Shots by segfaultbuserr on Saturday December 26, 2020 @08:03PM (#25547864)

I know nothing about chips, but I guess it's probably the last-level CPU cache but the GPU shares it as well, similar to Intel iGPU, so they decided to call it "system cache".

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Re:Apple Silicon M1 Die-Shots by chrisseaton on Saturday December 26, 2020 @08:01PM (#25547843)

It's L3, but I think it's called 'system cache' because it is also used for the bus that loads memory from RAM into the GPU.

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Re:Apple Silicon M1 Die-Shots by bullen on Sunday December 27, 2020 @05:36AM (#25550163)

I would really like to know where the L1 caches are for proportions!

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Re:Apple Silicon M1 Die-Shots by als0 on Sunday December 27, 2020 @08:03AM (#25550726)

The L1 caches are part of each CPU itself.

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Re:Apple Silicon M1 Die-Shots by bullen on Sunday December 27, 2020 @08:46AM (#25550982)

Sure, but what part are the L1... I can se a bunch of similar patterns to the L2/3 caches but I would like someone that knows to draw a border around them!

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