Cpu size

[PaprikaPirukas]

Can anyone with a deeper knowledge of cpu manufacture explain more in detail why cpu manufacturers aren't increasing the size of the cpu in order to pack more cells on one ?
Amd has 7nm processors and struggles to shrink it more in order to fit more on same cpu but how about a mother board with bigger socket where you can fit a new gen cpu which is not 5 by 5 cm but 10x10 for example ?

Amd epyc requires a bigger socker and the cpu is bigger than regular ones.

I understand that size matters in mobiles but we are talking about desktops where you can fit a normal size mobo.

Until they can reach new technology which will allow them to shrink from 7nm to say 5nm, they could just bring more power by increasing the size.

 

Thanks.

[5x5]

Because motherboards will cost more than the cpu if the socket is massive

[NunoLava1998]

Some PCs need small motherboards (Mini-ITX, Micro-ATX) sizes. It would be quite ridiculous to fit larger sockets on these (and likely impossible).

Also, it would generate a lot of heat.

[Bananasplit_00]

more silicon costs more and the smaller the node the more it costs too.

[Faisal A]

I don't just think its the silicone cost but the development time in mapping all of the transistors. Even a small dye can pack billions of transistors and mapping hundreds of billions of transistors is going to take a lot of time. Also, it is better to improve efficiency rather then use more raw power

[Windows7ge]

Socket TR4, SP3, & LGA 3647 are good examples where manufacturers did go with physically larger CPU's in order to increase core count. They also however started splitting dies into multiple dies where it isn't really one CPU anymore but 2 or 4 CPUs that behave like 1 CPU. AMD uses what they call Infinity Fabric and Intel uses Mesh.

 

It should be noted that there is actually a lot of room under the IHS on more mainstream consumer platforms allowing them to fit larger dies without it appearing bigger on the outside. That along with technologies in die shrinking make it unnecessary to increase the socket size in those instances. So really both AMD & Intel are approaching the problem on both fronts. They shrinking dies and using bigger CPUs.

 

We are reaching a point where we can't shrink dies any further with the materials currently being uses due to a phenomena known as quantum tunneling so they're looking to make CPU's out of materials other than Silicon to try and continue shrinking them so we will be forced to use bigger dies until then.