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AMD EPYC Rome Server CPUs: 6 Important Things To Know

CRN runs down six important things solution providers should know about AMD's second-generation EPYC processors, including how they compare to Intel's Xeon processors, how they can reduce TCO and how AMD plans to compete with Intel in the data center.

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Specs For Second-Gen EPYC's 19 CPUs

AMD's second-generation EPYC lineup consists of 19 processors, 14 of which are supported in single- and dual-socket configurations with the remaining four designed for single-socket.

These processors range from 64 cores to 8 cores. Base frequencies range from 2 gigahertz to 3.2 gigahertz while max boost frequencies go from 3.2 gigahertz to 3.4 gigahertz. They all come with eight DDR memory channels, a maximum DDR4 frequency of 3,200 megahertz and 128 lanes or higher of PCIe 4.0 connectivity. The thermal design power ranges from 120 watts to 225 watts.

Scott Aylor, corporate vice president of data center products, called the lineup a "very simple, clean product stack that allows us to cover the entire market."

The second-generation processors are headlined by the EPYC 7742, which comes with 64 cores, 128 threads, a base frequency of 2.25 gigahertz, a max boost frequency of 3.4 gigahertz and an L3 cache of 256 megabytes. The CPU's default thermal design power is 225 watts, and it can go up to 250 watts.

Comparing to the first-generation EPYC's top-line features, the second generation features up to two times more Zen cores, up to four times more shared L3 cache, up to two times more L3 cache, higher memory frequency and higher memory capacity, the latter of which reaches 4 terabytes per socket.

Aylor said all processors in the lineup come with the same features, which includes security features such as Secure Memory Encryption and Secure Encrypted Virtualization.

"We want our customers and partners to pay for performance they want and not buy up the stack for features they need," he said.

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