Acer AcerPower APM6 Service Manual page 43

Parameter
Err94 Enh
Spread Spectrum
HT Spread Spectrum
SSE/SSE2 Instructions
System BIOS Cacheable
DRAM Configuration
LDI & PCI Bus Control
UMA Frame Buffer Size
Chapter 2
Description
Also called Errata 94 Enhancement.
Errata 94 refers to the 94th bug
identified in AMD Athlon and
Opteron processors. This bug
affects the sequential prefetch
feature in those processors.
When the system clock generator
pulses, the extreme values of the
pulse generate excess EMI.
Enabling pulse spectrum spread
modulation changes the extreme
values from spikes to flat curves,
thus reducing EMI. This benefit may
in some cases be outweighed by
problems with timing-critical
devices, such as a clock-sensitive
SCSI device.
Enables or disables HT Spread
Spectrum. HT is Hyper Transport
between CPU and North Bridge.
This feature controls the availability
of the processor's SSE and SSE2
instruction sets.
When enabled, the processor's SSE
and SSE2 instruction sets are
enabled. Software applications can
make use of those instructions to
better process large amounts of data
quickly.
When disabled, the processor's SSE
and SSE2 instruction sets are
disabled. Software applications will
not be able to use those instructions
to process multiple data elements
simultaneously. However, the
processor's MMX instruction set will
still be available for use.
It is highly recommended that you
leave this BIOS feature at the
default setting of Enabled. This
allows SSE- and SSE2-optimized
software to make use of those
instruction sets to process large
amounts of data simultaneously.
Selecting Enabled allows caching of
the system BIOS ROM at F0000h-
FFFFFh, resulting in better system
performance. However, if any
program writes to this memory area,
a system error may result.
Press [Enter] to enter the setting
screen to set some parameters of
memory controller.
Press [Enter] to enter the setting
screen to set some parameters of
LDI & PCI bus control.
This item allows user to select the
size of VGA share memory.
Options
Enabled
Disabled
Enabled
Disabled
Enabled
Disabled
Enabled
Disabled
Enabled
Disabled
[Press Enter]
[Press Enter]
32, 64, 128, 256 MB
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