AMD Zen 5 Core is at Hot Chips 2024

If it feels like we have been talking about AMD Zen 5, that is because we have been. We covered the AMD Rzyen 9000 Zen 5 CPUs (maybe a review later this week?), the mobile architecture trifecta with Zen 5 RDNA 3.5 and XDNA 2, and more recently More Details on the AMD Ryzen AI 300 Series Ryzen 9000 Series and Zen 5. Now, AMD is doing a talk at Hot Chips 2024 about Zen 5. Just going through the presentation, we have seen a lot already, so we may post the slides with a tiny bit of commentary.

Please excuse typos as we are writing these live during the presentations.

AMD Zen 5 Core is at Hot Chips 2024

It is fun that we now start the Zen journey with Zen 3.

Here are the design objectives.

Here is the overview that we have gone through before.

This is the balanced throughput slide.

AMD says its branch predictor is better in this generation.

Here are the instruction decode advances.

Here is the integer side.

One of thee big changes is moving to a full FP512 data path for its AVX-512 execution.

The L1D is larger while remaining a 4-cycle load to use characteristics.

Here is the cache hierarchy and how the die is laid out.

AMD also has the lower cache and lower clock Zen 5c cores that are more optimized for power efficiency.

Here are the new Zen 5 ISA features.

We have already seen on the desktop side the Zen 5 power efficiencies and that was a design point.

Here is a good summary of the Zen 4 versus Zen 5 differences.

There has been a lot on the Zen 5 gaming performance, but here is the Zen 4 to Zen 5 comparison.

AMD is starting to show 128 core future Turin parts versus current generation 5th Gen Xeon parts launched earlier this year. Intel will hit 128 P-cores before AMD Turin is launched when the new Granite Rapids-AP is launched, scheduled for Q3 2024 so this is a bit of a strange comparison.

Here are the speeds and feeds for Zen 5.

AMD has homogeneous core SoCs for desktop and server, but heterogeneous core SoCs for mobile.

Here is the Strix Point (AMD Ryzen AI 300 series) SoC. This has Zen 5, Zen 5c, RDNA 3.5 graphics, and the new XDNA 2 AI Engines.

Here is the slide again on RDNA 3.5.

Here is the slide again on XDNA 2.

AMD Granite Ridge is the AMD Ryzen 9000 series of desktop parts.

Here is the summary.

We have seen most of this before.

Final Words

Some of the slides felt like they were formatted differently, but we have seen them before. Still, perhaps there are folks at Hot Chips that do not read or watch tech news and have not been exposed to Zen 5 before.