New AMD Zen 7 leak surfaces, up to 25% IPC upgrade over the unreleased Zen 6

AMD's Zen 6 architecture has not yet been officially released, yet we are already seeing leaks about Zen 7, codenamed "Prometheus". Well-known leaker "Moore's Law Is Dead" recently published a huge leak about the Zen 7 architecture, its internal layout, expected performance, and the products it will likely be featured in.

According to the leak, all "Prometheus" Zen 7 classic cores (spanning EPYC, laptop, and desktop segments) will reportedly be manufactured on TSMC's A14 process node, featuring 2MB of L2 cache per core, 4MB of L3 per core, FP512 support, and built-in AI acceleration within the CCDs themselves.

Perhaps most headline-worthy is the claimed IPC performance. The leak asserts that Zen 7 should deliver a 15-25% IPC uplift over the yet unreleased Zen 6, with approximately 8% of that gain attributed to cache design changes alone, not yet accounting for improvements to floating point and integer performance. Internal benchmarks reportedly simulated a 16-20% average per-core uplift for Desktop Zen 7 over Desktop Zen 6 in non-gaming workloads.

On the server front, EPYC "Florence" is said to scale up to a staggering 288 cores across eight Steamboat CCDs, with 7MB of L3 per core stacked on a dedicated L3D Chiplet (which is said to be different from 3D V-cache), potentially enabling up to 2,016MB of total L3 cache for the EPYC SP7/8 platform.

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For the desktop, the leak describes a "Grimlock Ridge" lineup targeting the AM5 socket, reportedly compatible with the existing Olympic Ridge Zen 6 IOD. The 98 mm² "Silverton" chiplet is said to pack 16 Zen 7 cores with optional V-Cache support, while the 56 mm² "Silverking" chiplet offers 8 cores but apparently lacks V-Cache support.

On the laptop side, "Grimlock Point" and "Grimlock Halo" are reportedly the FP10 and FP12 socket parts, respectively, with Grimlock Point allegedly offering 13-36% per-core performance gains over Zen 6 Medusa, depending on power envelope. These mobile chips will likely target performance per watt, with Grimlock Halo as the high-end enthusiast platform.

Finally, the leak states that EPYC Zen 7 is expected to enter production in mid-2028, with a launch likely by the end of that year. As always with leaks, these details should be taken with a massive grain of salt until officially confirmed by AMD. Still, if these numbers are anywhere near reality, then AMD seems to have a very strong product on its hands.