AdoredTV shared AMD’s internal plans, which are in line with official information from the Accelerated event.
It has long been known that Genoa and Bergamo processors will be based on Zen 4 cores. In both cases, a 5nm process is used to manufacture the crystal. Genoa will offer up to 96 cores with support for DDR5 and PCI Express 5.0, as well as CXL. Bergamo processors will use customized Zen 4c cores, with up to 128 per CPU. Previously, AMD did not officially disclose the number of memory channels and PCI Express lanes, but now 12 DDR5 channels have been confirmed.
New leaks reveal details of both the famous socket SP5 and SP6. The latter is intended for younger EPYC processors with fewer cores, as well as a reduced number of memory channels and PCI Express lanes. Torino, i.e. the next generation after Genoa and Bergamo, will also run on SP5 and SP6 sockets. But this is not surprising, since AMD is trying to stick to one platform as long as possible.
EPYC processors based on Genoa and Bergamo designs will be released for SP5 and SP6 sockets. But sockets will have differences in CPU support. Socket SP5 is designed for processors with 96 or 128 cores, in the case of SP6 their number is limited to 32 or 64. It seems that SP6 will be smaller in size, it is intended for processors with TDPs up to 225W.
In addition to fewer cores, SP6 features reduced I/O capabilities. The number of DDR5 memory channels has been halved. As for the PCI Express 5.0 and CXL lanes, their number has been reduced to 2/3 of the “older” socket.
In addition to the technical details, AMD’s plans show that the company will continue to follow the 3D cache strategy with Genoa as well. In particular, Genoa-X processors will get more L3 cache. It will be interesting to see how many layers AMD will add.
Finally, there are new production details. Genoa EPYC 7004 processors will start mass production from October. Bergamo and Genoa-X will follow in February 2023. Zen 4 processors for Socket SP6 are planned for April 2023.
Radeon Instinct MI300 as APU.
Rumors that AMD may implement one of the next generations of Radeon Instinct accelerators in the APU design have been confirmed again. The Instinct MI300 will be powered by a Zen 4 CPU and CDNA 3 GPU along with HBM3 memory. In March, experimental crystals (tape-out) were already released, in the third quarter, the first APU samples will be tested in laboratories.