3 ms·

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

• chrisseaton 6y ago
  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.
  • bullen 6y ago
    I would really like to know where the L1 caches are for proportions!
    • als0 6y ago
      The L1 caches are part of each CPU itself.
      • bullen 6y ago
        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!
• my123 6y ago
  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.
• segfaultbuserr 6y ago
  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".