Intel® Xeon® Scalable Platform (Purley) Server Microarchitecture for DDR4 Servers

The Intel® Scalable Platform (Purley) features a new server microarchitecture that supports the next generation of DDR4 server memory. The Purley platform significantly increases memory bandwidth performance by incorporating an additional two memory channels over the previous quad-channel Grantley platform. With a total of six memory channels available to the processor, and an increase in memory speed, memory-bound applications will experience a dramatic boost in performance.

Targeted Uses

The higher core counts and increased memory bandwidth, combined with higher density support for greater total memory capacity, make the Purley platform ideal for the following applications:

  • High-Performance Computing (HPC)
  • Artificial Intelligence (AI)
  • Virtualization
  • Cloud
  • Big Data
  • In-Memory Database
  • Unified Networking
  • Business Intelligence
  • Virtual Desktop Infrastructure
  • Analytics

At A Glance

Xeon SP (Skylake)

  • Supports up to 1.5TB (Terabytes) of memory per processor{{Footnote.N52233}}
  • Supports DDR4 Registered and Load Reduced DIMMs up to 2666MT/s, equivalent to transfer rates of 21.3GB/s per module

Memory Architecture

Memory architecture is based on Six Channels arranged in 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

Xeon SP (Skylake)

  • DDR4-2666
  • Registered DIMM (RDIMM, 3DS RDIMM)
  • Load Reduced DIMM (LRDIMM, 3DS LRDIMM)
Model Type
(No Mixing in a Server)
DIMM per Channel
1 DPC
DIMM per Channel
2 DPC
Registered DIMM (RDIMM, 3DS) 2666
Load Reduced DIMM (LRDIMM, 3DS)