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I think I'll stick with the 5800X3D. I was expecting these new CPUs having the same cache tech but apparently not.

by morjom 4y ago

philliphaydon 4y ago
I’m willing to bet that’s their ace up their sleeve for Intels 13th Gen. Wait till around Jan and AMD will pull the rug out from under Intel.
Latty 4y ago
It's in their roadmap as the next release with distinct SKUs.
allenrb 4y ago
Fairly sure AMD has already indicated that an "extra cache" model(s?) of Zen 4 consumer chips will appear down the road.
sitkack 4y ago
v-cache hbm is coming to the 7000 line, but they will stagger the launch for MBA reasons.
- Tuna-Fish 4y ago
  v-cache and HBM are two entirely distinct technologies, there are currently no products that use both and there are not even any rumors of any products that would use both. v-cache is AMD:s branding for attaching additional SRAM cache directly on top of the die using TSMC hybrid bonding, HBM is a JEDEC standard for DRAM. They have literally nothing to do with each other.
  - sitkack 4y ago
    That makes v-cache that much more impressive. Do you know if the GPU cores will be able to read directly from v-cache?
    - Tuna-Fish 4y ago
      In Raphael (the cpus that were just launched) the GPU is a tiny, weak one that's sitting on the IO die, while the v-cache chip is integrated on top of the main CPU die. I would suspect that it can't make any use of it, not that it would benefit much because it just doesn't have the compute power. It's really only intended to make the CPUs able to do basic desktop work without a separate GPU. AMD currently has no published big APUs that would use v-cache, but many enthusiasts, including me, have noted that if they made one and allowed the GPU to share the last-level cache, it would potentially be a very compelling product for mobile. Who knows when/if they make one. They do have upcoming discrete GPUs which are rumored to optionally contain v-cache (RDNA3, probably released as Radeon RX 7000).
sundvor 4y ago
How good is the 5800X3D!?! I've recently upgraded from a 3900XT which was permanently clocked to 4.4ghz. Whilst certain titles such as Star Citizen, DCS World and Flight Simulator are having staggering improvements, I'm also finding it very solid for desktop / programming use - e.g. Visual Studio. The reduced power consumption doesn't hurt either; I needed constant ~1.27vcore for the 4.4ghz before.

I think I'll stick with the 5800X3D. I was expecting these new CPUs having the same cache tech but apparently not.

by morjom 4y ago

I think I'll stick with the 5800X3D. I was expecting these new CPUs having the same cache tech but apparently not.

I’m willing to bet that’s their ace up their sleeve for Intels 13th Gen. Wait till around Jan and AMD will pull the rug out from under Intel.

Latty 4y ago

It's in their roadmap as the next release with distinct SKUs.

allenrb 4y ago

Fairly sure AMD has already indicated that an "extra cache" model(s?) of Zen 4 consumer chips will appear down the road.

sitkack 4y ago

v-cache hbm is coming to the 7000 line, but they will stagger the launch for MBA reasons.

Tuna-Fish 4y ago
v-cache and HBM are two entirely distinct technologies, there are currently no products that use both and there are not even any rumors of any products that would use both. v-cache is AMD:s branding for attaching additional SRAM cache directly on top of the die using TSMC hybrid bonding, HBM is a JEDEC standard for DRAM. They have literally nothing to do with each other.
- sitkack 4y ago
  That makes v-cache that much more impressive. Do you know if the GPU cores will be able to read directly from v-cache?
  - Tuna-Fish 4y ago
    In Raphael (the cpus that were just launched) the GPU is a tiny, weak one that's sitting on the IO die, while the v-cache chip is integrated on top of the main CPU die. I would suspect that it can't make any use of it, not that it would benefit much because it just doesn't have the compute power. It's really only intended to make the CPUs able to do basic desktop work without a separate GPU. AMD currently has no published big APUs that would use v-cache, but many enthusiasts, including me, have noted that if they made one and allowed the GPU to share the last-level cache, it would potentially be a very compelling product for mobile. Who knows when/if they make one. They do have upcoming discrete GPUs which are rumored to optionally contain v-cache (RDNA3, probably released as Radeon RX 7000).

sundvor 4y ago

How good is the 5800X3D!?! I've recently upgraded from a 3900XT which was permanently clocked to 4.4ghz. Whilst certain titles such as Star Citizen, DCS World and Flight Simulator are having staggering improvements, I'm also finding it very solid for desktop / programming use - e.g. Visual Studio. The reduced power consumption doesn't hurt either; I needed constant ~1.27vcore for the 4.4ghz before.