[Retric]

Mores Law as originally stated said transistor density doubled every 18-24 months. Using larger CPU’s for example let’s you have more transistors, but has nothing to do with Mores Law.

Clearly density has kept increasing, but the law refers to a rate of increase that we haven’t been able to meet. The original 386 released in 1985 had 275,000 transistors, using the slowest interpretation we would need to be at (2^18) = ~72+ Billion transistors today or (2^17) = 36+ Billion in 2019 which is close, but the chip would also need to be the size of a 386 which they aren’t.

AMD Epyc Rome is 1008 mm^2 vs a 386 at 104 mm^2. The M1 is 119 mm^2, but it’s only 16 Billion Transistors. As such it’s safe to say Mores Law is dead.

[warmwaffles]

Did Mores Law take into account 3D density or was it just single layer compactness?

[Retric]

It’s per wafer area. Which effectively compresses the full 3D nature of modern chips into a 2D structure.