News for hackers. Stuff that matters.

A comment on M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs. Parent comment

Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by Spartan22 on Sunday March 20, 2022 @05:43PM (#30746981)
Why not spread the processor across the whole Macbook motherboard, wouldn't this bring huge cooling benefits with no major downsides?
[ Parent | on HN ]
Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by 01100011 on Sunday March 20, 2022 @05:48PM (#30747020)
Speed of light is something like one foot per nanosecond. So at 2GHz you go 6" per clock, assuming you can actually go the speed of light which, in a wire, you can't.
[ Parent | on HN ]
Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by admax88qqq on Sunday March 20, 2022 @06:29PM (#30747385)
The shorter signals have to travel, the less time and power it takes to do so.
[ Parent | on HN ]
Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by bufferoverflow on Sunday March 20, 2022 @05:51PM (#30747042)
The whole point of going to smaller nm process is to bring things closer, so it takes less time to move information.
[ Parent | on HN ]
Re:M1 Ultra About 3x Bigger Than AMD's Ryzen CPUs by pure_simplicity on Sunday March 20, 2022 @05:48PM (#30747019)
The downside would be latency increase / speed reduction.
[ Parent | on HN ]