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AMD 4th Generation EPYC™ processor platform (Siena)

AMD’s “Siena” microarchitecture supports DDR5 and features world-class performance while being energy efficient to meet the demands of today’s data centers.

Server memory

The AMD EPYC 8004 series processor, codenamed “Siena”, is an energy-efficient line of server processors built on the AMD “Zen 4c” 5nm microarchitecture. The 8004 series features up to 64 cores for single-socket (1P) servers and utilises up to six channels of DDR5 to deliver high-performance bandwidth for demanding applications. The low TDP but high core density makes the 8004 series a small but powerful solution for edge or dense computing environments.

Server memory

Targeted uses

  • Cloud service providers
  • Edge computing
  • Artificial intelligence
  • Telco / 5G-ready networks
  • Small-to-medium businesses

At a glance

AMD 4th Generation EPYC™ (Siena) 8004 Series

  • Supports up to 1.152TB{{Footnote.N72861}} (terabytes) of memory per processor
  • Supports DDR5 Registered DIMMs{{Footnote.N72862}} up to 4800MT/s, equivalent to transfer rates of 38.4GB/s per module

Memory architecture

Memory architecture is based on six channels (6CH) arranged in up to two banks per processor. Each processor can be configured with 6 or 12 modules, depending on the motherboard layout, to achieve the maximum aggregated memory bandwidth.

  • 6 memory channels per processor
  • Up to 2 DIMMs per channel
  • Up to 12 DIMMs per processor

AMD population rules

(6 channel, 12 sockets per CPU, 2 DPC)

 
AMD EPYC™ (Siena) 8xx4 SERIES – 1 DPC
AMD EPYC™ (Siena) 8xx4 SERIES – 2 DPC
 
AMD EPYC™ (Siena) 8xx4 SERIES – 1 DPC
AMD EPYC™ (Siena) 8xx4 SERIES – 2 DPC
Module type/ranks
Module type/ranks
1 DIMM per channel
(1 DPC)
2 DIMMs per channel
(2 DPC)
Registered DIMM (RDIMM)
Registered DIMM (RDIMM)
4800
4400 (1R + 1R)
4000 (2R + 1R/2R + 2R)
 
Module type/ranks
Registered DIMM (RDIMM)
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