AAEON ACP-5185 - Manual (Page 40)

M u l t i - T o u c h P a n e l P C A E C - 5 1 8 5
CPU Configuration
Options summary:
Disabled Hyper-Threading
Enabled Optimal Default, Failsafe Default
Enabled for Windows XP and Linux (OS optimized for Hyper-Threading Technology)
and Disabled for other OS (OS not optimized for Hyper-Threading Technology).
When Disabled only one thread per enabled core is enabled.
Chapter 3 AMI BIOS Setup 3-10