5 ms·

It sounds great when paired with an APU. No such part was announced though.

by brnt 4y ago

andrewstuart 4y ago
APUs are very slow compared to discrete GPUs.
- wtallis 4y ago
  A lot of that is due to the low memory bandwidth on mainstream CPU sockets: 128-bit bus, going up to around 6GT/s currently. That's half the memory bandwidth of NVIDIA's current entry-level laptop discrete GPU. And more L3 cache on a CPU directly addresses that memory bandwidth limitation (provided it's accessible to the iGPU, which would certainly be the case if AMD put 3D cache on an APU).
wmf 4y ago
The GPU cannot access the L3 though so V-cache would not help APUs. Maybe in the future AMD will have V-Infinity Cache.
- brnt 4y ago
  What a pity!
AnthonyMouse 4y ago
All of the Ryzen 7000 series are APUs.
- Dalewyn 4y ago
  With AMD finally taking a page from Intel with regards to providing an iGPU to everyone, Intel expected to integrate ARC into their CPUs with Meteor Lake (14th gen), and discrete GPUs from Nvidia and AMD being as bloody expensive as they are, I wonder if we're on the verge of a turning point in desktop computing as discrete GPUs go down the path once trodden by sound cards?
  - sampa 4y ago
    look at the size of 4090 and think again
    - noizejoy 4y ago
      The soundcard analogy may not be that faulty. General purpose soundcards have pretty much been replaced by motherboard components, while high end soundcards (audio interfaces) for DAW (digital audio workstation) use cases are an entirely separate market. Side note: Most of those high end audio interfaces are now external devices connected via USB (formerly also via Firewire). And since a DAW typically doesn’t need high end video, I didn’t bother with a separate GPU on my latest DAW build. I will only add a GPU card, if I ever want to do higher end gaming, video production or machine learning on that computer.
    - p1necone 4y ago
      Dedicated GPUs are a chip about the same size as a CPU + a big board with power delivery, memory modules, cooling etc. CPUs would be the same size if they had all that stuff on their own discrete board too. Pairing a 4090 + a CPU on the same chip/side by side would be a stretch, but it has nothing to do with physical size - more the motherboard needing to handle power delivery, and the separate memory not being fast enough. Something like a 3060 is probably more reasonable. This already exists too - the PS5 and Xbox Series X/S both use APUs with much more powerful GPUs than are available as standalone purchases.
      - ilyt 4y ago
        > Dedicated GPUs are a chip about the same size as a CPU + a big board with power delivery, memory modules, cooling etc. 4090 have die area of ~600mm2 Ryzen 7 have 71mm2 CPU die and 122mm2 IO die It's not even fucking comparable > CPUs would be the same size if they had all that stuff on their own discrete board too Oh, oh, I know, we can call the board that has all the power and IO CPU needs a "motherboard" cos it cradles the CPU in its hold (socket). Oh, wait, that's exactly how it is.
        4y ago

It sounds great when paired with an APU. No such part was announced though.

by brnt 4y ago

It sounds great when paired with an APU. No such part was announced though.

andrewstuart 4y ago

APUs are very slow compared to discrete GPUs.

wtallis 4y ago
A lot of that is due to the low memory bandwidth on mainstream CPU sockets: 128-bit bus, going up to around 6GT/s currently. That's half the memory bandwidth of NVIDIA's current entry-level laptop discrete GPU. And more L3 cache on a CPU directly addresses that memory bandwidth limitation (provided it's accessible to the iGPU, which would certainly be the case if AMD put 3D cache on an APU).

wmf 4y ago

The GPU cannot access the L3 though so V-cache would not help APUs. Maybe in the future AMD will have V-Infinity Cache.

brnt 4y ago
What a pity!

AnthonyMouse 4y ago

All of the Ryzen 7000 series are APUs.

Dalewyn 4y ago
With AMD finally taking a page from Intel with regards to providing an iGPU to everyone, Intel expected to integrate ARC into their CPUs with Meteor Lake (14th gen), and discrete GPUs from Nvidia and AMD being as bloody expensive as they are, I wonder if we're on the verge of a turning point in desktop computing as discrete GPUs go down the path once trodden by sound cards?
- sampa 4y ago
  look at the size of 4090 and think again
  - noizejoy 4y ago
    The soundcard analogy may not be that faulty. General purpose soundcards have pretty much been replaced by motherboard components, while high end soundcards (audio interfaces) for DAW (digital audio workstation) use cases are an entirely separate market. Side note: Most of those high end audio interfaces are now external devices connected via USB (formerly also via Firewire). And since a DAW typically doesn’t need high end video, I didn’t bother with a separate GPU on my latest DAW build. I will only add a GPU card, if I ever want to do higher end gaming, video production or machine learning on that computer.
  - p1necone 4y ago
    Dedicated GPUs are a chip about the same size as a CPU + a big board with power delivery, memory modules, cooling etc. CPUs would be the same size if they had all that stuff on their own discrete board too. Pairing a 4090 + a CPU on the same chip/side by side would be a stretch, but it has nothing to do with physical size - more the motherboard needing to handle power delivery, and the separate memory not being fast enough. Something like a 3060 is probably more reasonable. This already exists too - the PS5 and Xbox Series X/S both use APUs with much more powerful GPUs than are available as standalone purchases.
    - ilyt 4y ago
      > Dedicated GPUs are a chip about the same size as a CPU + a big board with power delivery, memory modules, cooling etc. 4090 have die area of ~600mm2 Ryzen 7 have 71mm2 CPU die and 122mm2 IO die It's not even fucking comparable > CPUs would be the same size if they had all that stuff on their own discrete board too Oh, oh, I know, we can call the board that has all the power and IO CPU needs a "motherboard" cos it cradles the CPU in its hold (socket). Oh, wait, that's exactly how it is.
      - 4y ago