ADLINK MXE-5400 - Manual (Page 68)

PRELIMINARY
56 BIOS Setup
CPU Configuration
Hyper-Threading
Enabled for OS optimized for Hyper-Threading Technology and
disabled for those not optimized. When disabled only one
thread per enabled core is enabled
Active Processor Cores
Number of cores to enable in each processor package.
Limit CPUID Maximum
Limits the CPUID return value, should be disabled in older OS
to avoid system error.
Execute Disable Bit
Can prevent certain classes of malicious buffer overflow.
Intel Virtualization Technology
When enabled, a VMM can utilize the additional hardware
capabilities provided by Vanderpool Technology