3 ms·

Is that going to increase the GHz as well or just the number of cores.

rishav_sharan 3y ago
Doubt that. Frequency will be tied to heat dissipation. And in a 3d stack, the heat dissipation of the inner transistors is going to be very difficult
- sundvor 3y ago
  In gaming, especially simulators: The 5800x3d and then the 7800x3d has proved how exemplary performance benefits can be gained in certain use cases, in some cases outperforming Intel with less than half the power usage (if not a third). Limiting overclocking is a price to pay for that, but you kind of get it back with the monthly power bills - and still going toe to toe with Intel in general.
  - DeathArrow 3y ago
    I doubt that for one user using one CPU the power bill is going to matter. People still use AC, washing machines and electrical heating consuming thousands of kw.
    - sundvor 3y ago
      It's a 100-150w difference. It all adds up. This also means you don't need to run the fans in your system as high.
      - markhahn 3y ago
        Look at the numbers. Power/heat matters for datacenters, but not for people. Yes, you can built a kw desktop, but you know you're doing something weird. For most people, their computer's peak dissipation has been falling for a decade. 90W cpus used to be common, but mainstream is currently going from 65 to 40W categories in desktops. And normal people do not have GPUs. Even more normal people depend primarily on mobile devices, where 15W laptops are routine, and lots of people use devices <4W.
- georgeburdell 3y ago
  Look at the specs for the Core series since 2007. The clocks have doubled. It’s not a fast increase, to be sure, but it’s happening
  - KingLancelot 3y ago
    [dead]
- Dylan16807 3y ago
  These two layers are touching, nanometers apart. The heat dissipation will be the same for both layers. It's still a simple problem of density, not a more complicated problem similar to trying to cool multiple dies. Edit: To throw math at it, silicon conducts at 2-4 Watts per centimeter-Kelvin. If we need the heat to travel an extra 100nm, and we're looking at a 1cm by 1cm area of chip, then it takes 20 to 40 kilowatts flowing through that slice before the top and bottom will differ by more than 0.1 degrees.
rishav_sharan 3y ago
Doubt that. Frequency will be tied to heat dissipation. And in a 3d stack, the heat dissipation of the inner transistors is going to be very difficult
DeathArrow 3y ago
GHz might not increase but maybe they can do more IPC by having a wider architecture.

Doubt that. Frequency will be tied to heat dissipation. And in a 3d stack, the heat dissipation of the inner transistors is going to be very difficult

sundvor 3y ago
In gaming, especially simulators: The 5800x3d and then the 7800x3d has proved how exemplary performance benefits can be gained in certain use cases, in some cases outperforming Intel with less than half the power usage (if not a third). Limiting overclocking is a price to pay for that, but you kind of get it back with the monthly power bills - and still going toe to toe with Intel in general.
- DeathArrow 3y ago
  I doubt that for one user using one CPU the power bill is going to matter. People still use AC, washing machines and electrical heating consuming thousands of kw.
  - sundvor 3y ago
    It's a 100-150w difference. It all adds up. This also means you don't need to run the fans in your system as high.
    - markhahn 3y ago
      Look at the numbers. Power/heat matters for datacenters, but not for people. Yes, you can built a kw desktop, but you know you're doing something weird. For most people, their computer's peak dissipation has been falling for a decade. 90W cpus used to be common, but mainstream is currently going from 65 to 40W categories in desktops. And normal people do not have GPUs. Even more normal people depend primarily on mobile devices, where 15W laptops are routine, and lots of people use devices <4W.
georgeburdell 3y ago
Look at the specs for the Core series since 2007. The clocks have doubled. It’s not a fast increase, to be sure, but it’s happening
- KingLancelot 3y ago
  [dead]
Dylan16807 3y ago
These two layers are touching, nanometers apart. The heat dissipation will be the same for both layers. It's still a simple problem of density, not a more complicated problem similar to trying to cool multiple dies. Edit: To throw math at it, silicon conducts at 2-4 Watts per centimeter-Kelvin. If we need the heat to travel an extra 100nm, and we're looking at a 1cm by 1cm area of chip, then it takes 20 to 40 kilowatts flowing through that slice before the top and bottom will differ by more than 0.1 degrees.

rishav_sharan 3y ago

Doubt that. Frequency will be tied to heat dissipation. And in a 3d stack, the heat dissipation of the inner transistors is going to be very difficult

DeathArrow 3y ago

GHz might not increase but maybe they can do more IPC by having a wider architecture.