CONFIGURATION GUIDE
–
NEC Express5800/A2040c, A2020c, A2010c, A1040c
NEC Corporation
Rev.2.0
–Sep. 2015
20
CPU Functions
Intel® Xeon® Processors for this server supports the following CPU functions
Category
Function Name/Summary
CPU
Xeon
E7-4820v3
E7-4809v3
Xeon
E7-8890v3,E7-8880v3
E7-8870v3,E7-4850v3
E7-8891v3,E7-8893v3
64 bit
Intel® 64
64 bit function
Power Saving
Enhanced Intel SpeedStep® Technology
(Intel® Demand Bases Switching Technology)
Technology to decrease power consumption by
adjusting voltage/clock per CPU workload
Performance
Intel® Turbo Boost Technology
Technology to boost clock frequency
‐
Performance
Intel® Hyper-Threading Technology
Technology to use one core as two threads
Virtualization
Intel® Virtualization Technology
Technology to provide hardware (CPU) support for
processor virtualization
Security
Execute Disable
Technology to avoid the execution of malware utilizing
buffer over flow error
The maximum number of logical processors supported by OS
See the table below for the maximum number of logical processors that you can actually use on your system
Maximum Number of Logical Processors Supported by Operating
Systems
Maximum
Number
of
Logical
Processors
Supported
by
this
Server
Microsoft Windows Server 2012 Standard
Microsoft Windows Server 2012 Datacenter
Microsoft Windows Server 2012 R2 Standard
Microsoft Windows Server 2012 R2 Datacenter
640
1
144
Red Hat Enterprise Linux 6 (x86_64)
160
144
VMware ESXi 5.5
320
144
VMware ESXi 6.0
480
144
1
The maximum number of logical processors when using Hyper-V are below:
Windows Server 2012, Windows Server 2012 R2 : 320 logical processors
