User manual

PCE-5124 User Manual 46
3.3.1 CPU configuration
Figure 3.5: CPU configuration setting
C1E Support
Intel® CPU Enhanced Halt (C1E) function, a function to save CPU
power consumption in system halt state. When enabled, the CPU speed
and voltage will be reduced during system halt state to save power con-
sumption. You may choose to enable or disable it.
Hardware Prefetcher
Hardware Prefetcher is a technique that fetches instructions and/or data
from memory into the CPU cache memory well before the CPU needs it,
so that it can improve the load-to-use latency. You may choose to enable
or disable it.
Adjacent Cache Line Prefetch
The Adjacent Cache-Line Prefetch mechanism, like automatic hardware
prefetch, operates without programmer intervention. When enabled
through the BIOS, two 64-byte cache lines are fetched into a 128-byte
sector, regardless of whether the additional cache line has been requested
or not. You may choose to enable or disable it.