Intel E7-8891 v2 CM8063601377422 User Manual

Product codes
CM8063601377422
Page of 504
Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family
23
Datasheet Volume Two: Functional Description, February 2014
The Processor Architecture Overview
2
The Processor Architecture 
Overview
This section describes the key architecture features of the core and uncore modules of 
the Intel Xeon processor E7 v2 product family. 
 shows a high level view of the processor integrating: 
• Multiple Intel Xeon processor E7-2800/4800/8800 v2 product family cores
• Up to 3 Intel QPI interfaces 
• Up to 32 PCI Express* 3.0 lanes
• 1 x4 DMI2/PCIe* 2.0 interface
For the purpose of architectural description, the processor can be sub-divided into 
three main areas - core, uncore, and IIO. “Core” includes Intel Xeon processor E7 v2 
product family core. Uncore includes Last Level Cache (LLC), Caching agents (Cbo), 
Home Agent (HA), Ring to Intel QPI blocks (R3QPI), Intel QPI Agents, integrated 
memory controller (iMC), Power Control Unit (PCU), Configuration Agent (Ubox), and 
the IIO module. 
 describes Core features and 
 describes the 
uncore features.
2.1
Core Features 2
This section describes the key architecture features of core used within the processor. 
Figure 2-1. Intel
®
 Xeon
® 
Processor E7-2800/4800/8800 v2 Product Family High Level 
Block Diagram
32 PCIe 3.0 
Lanes
2x Intel®  SMI2 
Interfaces per Memory 
controller
3x Intel QuickPath Interconnects 
1 x 4 DMI2/
PCIe 2.0 
Interface
LLC
R-QPI 0
Cor
e
/ Cbo
0
Cor
e
/ Cbo
1
HA0 
MC0
HA1
MC1
Ubox
PMU
Internal IO (IIO)
R-QPI 1
R-QPI 2
Cor
e
/ Cbo
2
Co
re/ Cb
n
Cor
e
/ Cb
o n-
1
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