AMD Answers Our Zen 4 Tech Questions, with Robert Hallock 11 AMD Answers Our Zen 4 Tech Questions, with Robert Hallock
I am going to post a few of the interesting Q/A but there's a lot if you want to read through it:
16-core, 32-thread is the maximum core configuration for the Ryzen 7000 at launch?
That is correct.
At Computex, you showed a 15% single-thread performance gain over the Ryzen 9 5950X. Wouldn't that only put the gaming performance on par with 5800X3D?
I think it's too early to say actually. We were deliberately conservative with our number on single-thread performance. We do intend to publish the exact breakdown of IPC vs. frequency contribution later in the summer, also including performance, power, and area on the new process
What are your thoughts on 3D Vertical Cache (3DV Cache) for Zen 4?
3DV Cache will absolutely be a continuing part of our roadmap.
Your presentation mentioned "AI acceleration." Is that AVX-512 or something more exotic, like Intel GNA?
Yes. Specifically, AVX 512 VNNI for neural networking and AVX 512 BLOAT16 for inferencing.
Is integrated graphics standard on most SKUs?
IGP is standard. It's included on all 6 nanometer IO dies, which has a small number of compute units built in, specifically to enable video encode & decode and multiple display outputs.
Does the IGP support AV1 decode?
What can we expect from the processors in terms of CPU overclocking?
I'm not gonna make a commitment yet on frequency, but what I will say is that 5.5 GHz was very easy for us.
How do you feel about the transition from DDR4 to DDR5?
AMD is betting on DDR5, there's no DDR4 support in Zen 4.
There's a bit of confusion about the CPU's PCIe 5.0 configuration. We've seen 24 and 28 lanes mentioned. Could you clarify?
There are 28 total lanes from the CPU, all Gen 5, of which 4 are peeled off for downlink to the chipset and the remaining 24 are available to the user. On X670 Extreme that means graphics operates at x16 Gen 5 or x8/x8 Gen 5, and there's one M.2 NVMe x4 Gen 5. On the X670 (non-Extreme) only the M.2 NVMe slot is required to be Gen 5, the top slot for graphics will optionally be Gen 5. On B650, only M.2 storage will be Gen 5. Of course, other components, like companion controllers or additional NVMe devices, can connect to Gen 5 on the CPU.
Is the X670E chipset fanless?