AMD's Zen 2 architecture heralds the coming of Ryzen 3 processors

AMD EPYC 'Rome': Zen 2 on 7nm, 64C/128T of CPU power

AMD EPYC 'Rome': Zen 2 on 7nm, 64C/128T of CPU power

It's next-generation Epyc chips combine up to eight 7nm CPU "chiplets" with a central 14nm I/O die supporting 8-channel DDR4 memory and PCIe 4.0. With PCIe 4.0 capability it is capable of a 64 GB/s bidirectional connection to the CPU and with Infinity Fabric Links it has 100 GB/s per-link bandwidth between GPUs. When matched against a dual-socket Xeon Platinum 8180M server, the AMD box ran the benchmark to completion first.

"The powerful combination of cores, memory bandwidth and I/O on AMD EPYC processors create a highly differentiated solution that can offer lower TCO for our customers and lower prices for the end-user".

AMD also talked about Zen 2 CPU core and modular design methodology with the so-called chiplet design but we will cover that one in a separate article.

According to AMD, the dedicated I/O die offers improved latency and power consumption for the new Epyc Rome processors. Nearly certainly, the Ryzen 3 family will make use of the 7nm Zen 2 architecture, which could see AMD push ahead of Intel in the raw performance and clock speed stakes, as Intel is still on the 14nm process node given it has kept pushing back the debut of 10nm-based CPUs due to problems with manufacturing them at scale. Thanks to the doubling of the core count and floating point width, AMD is claiming Rome will deliver four times the flops per socket as its first-generation EPYC offering. What exactly gets ported over to Ryzen, however, isn't known.

The 7nm manufacturing process and indeed the Zen timeline doesn't stop with the highly-anticipated Zen 2.

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"It's hard to say on notebooks right now and I need a bit more information on how AMD would implement this in mobile platforms", he said.

The roadmap for Zen started with the first design in 2012.

Why this matters: Ryzen marked AMD's comeback in consumer CPUs, so expectations are high for the second generation.

Of course it is entirely possible this design characteristic will not come to the Ryzen 3/5/7 products, but it might be employed on Threadripper, which is now a step between the normal consumer products and server-targeting EPYC chips.

At a dedicated event in San Francisco today under the "Next Horizon" tagline, AMD announced that it is collaborating with TSMC to make the jump to the 7nm process node with its next-generation Zen 2 architecture. Rome CPUs already have hardware security patches for Spectre.

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