4 ms·

M1, M1 Pro, and M1 Max are all distinct dies, with M1 Max being quite a bit larger, with a larger cache, and more I/O compared to its M1 Pro sibling. The 24-co

M1, M1 Pro, and M1 Max are all distinct dies, with M1 Max being quite a bit larger, with a larger cache, and more I/O compared to its M1 Pro sibling. The 24-core M1 Max, however, is a binned die of the 32-core M1 Max. There are lower core bins of M1 Pro that are only available on the cheaper 14-inch MacBook Pro. M1 is also available in two forms, one with a 7-core and the other with 8-core GPU.

marcan_42 5y ago
Specifically, the M1 Max has twice the memory controllers, and each one comes with a cache block, and hence has twice the cache. It also has twice the GPU cores, an extra ProRes core, two extra display controller cores, an extra AVE (video encoder) block, an extra scaler block, an extra PMGR (power manager, including some PLLs and such) block and extra bus fabric branches to drive it all, and two things Apple won't talk about: an extra ANE (Neural Engine) (disabled on all shipping machines) and die-to-die interconnect. This is all in the lower chunk of the die, such that they could basically cut the design on the dotted line for the M1 Pro (not literally, but almost; they definitely didn't redo much if any P&R, as the shared portion is identical by all visual and logical appearances).
fred33 5y ago
M1Max doesn’t have more I/O than M1Pro. All I/O blocs are localized on the top part of two dies. And as Hector said, M1Max is identical to M1Pro but with an bottom extension which provides more Ram interfaces, Caches, GPU, Média and Neural Engines, PLL and probably all the logic for a die to die connection. But this die-to-die area has been cutted on the Apple picture presented in keynote. I don’t think M1Pro has a such die-to-die logic, but I don’t see real picture of M1Pro die.
- mehrdada 5y ago
  By "I/O" I am including memory bus, not merely devices.

4 ms·

M1, M1 Pro, and M1 Max are all distinct dies, with M1 Max being quite a bit larger, with a larger cache, and more I/O compared to its M1 Pro sibling. The 24-co

by mehrdada 5y ago

marcan_42 5y ago
Specifically, the M1 Max has twice the memory controllers, and each one comes with a cache block, and hence has twice the cache. It also has twice the GPU cores, an extra ProRes core, two extra display controller cores, an extra AVE (video encoder) block, an extra scaler block, an extra PMGR (power manager, including some PLLs and such) block and extra bus fabric branches to drive it all, and two things Apple won't talk about: an extra ANE (Neural Engine) (disabled on all shipping machines) and die-to-die interconnect. This is all in the lower chunk of the die, such that they could basically cut the design on the dotted line for the M1 Pro (not literally, but almost; they definitely didn't redo much if any P&R, as the shared portion is identical by all visual and logical appearances).
fred33 5y ago
M1Max doesn’t have more I/O than M1Pro. All I/O blocs are localized on the top part of two dies. And as Hector said, M1Max is identical to M1Pro but with an bottom extension which provides more Ram interfaces, Caches, GPU, Média and Neural Engines, PLL and probably all the logic for a die to die connection. But this die-to-die area has been cutted on the Apple picture presented in keynote. I don’t think M1Pro has a such die-to-die logic, but I don’t see real picture of M1Pro die.
- mehrdada 5y ago
  By "I/O" I am including memory bus, not merely devices.