Why can't they just give the IO bus a slower clock and devote the resources to t... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		remexre on Nov 30, 2020 \| parent \| context \| favorite \| on: Why is Apple's M1 chip so fast? Why can't they just give the IO bus a slower clock and devote the resources to the memory bus? Or, memory-map everything and make the IO area yet another reserved area the BIOS tells the OS about?

baybal2 on Nov 30, 2020 [–]

I believe, if anybody knew answer to many questions along the lines of yours, the guy would be rich, and Intel would not be in the ditch.

To be clear, the I/O bus with own address space is no longer in use, but design considerations resulting from keeping it around for so long are there.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact