MSI U250 User Manual - Page 89

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BIOS Setup 4-7 Advanced Menu Š PowerNow This item allows you to enable or disable PowerNow function. When set to Enabled, the system always operates in a conserve power mode. If you want to optimize the processor, set this item to Disabled, so that the processor's speed will vary depending on the use of your operating system and applications. Default setting is set to Enabled. Š OnChip SATA Type Select IDE to enable the hard disk device with IDE interface. Select AHCI to enable the hard disk device with AHCI mode while entering the operating system. Setting options: IDE and AHCI. Š PCI Latency Timer This item controls how long each PCI device can hold the bus before another takes over. When set to higher values, every PCI device can conduct transactions for a longer time and thus improve the effective PCI bandwidth. For better PCI performance, you should set the item to higher values. Setting options: 32, 64, 96, 128, 160, 192, 224, and 248.

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4-7
BIOS Setup
Advanced Menu
PowerNow
This item allows you to enable or disable
PowerNow
function.
When set
to
Enabled
, the system always operates in a conserve power mode.
If
you want to optimize the processor, set this item to
Disabled
, so that the
processor’s speed will vary depending on the use of your operating system
and applications.
Default setting is set to
Enabled
.
OnChip SATA Type
Select
IDE
to enable the hard disk device with IDE interface.
Select
AHCI
to enable the hard disk device with AHCI mode while entering the operating
system.
Setting options:
IDE
and
AHCI
.
PCI Latency Timer
This item controls how long each PCI device can hold the bus before
another takes over. When set to higher values, every PCI device can
conduct transactions for a longer time and thus improve the effective PCI
bandwidth. For better PCI performance, you should set the item to higher
values.
Setting options:
32, 64, 96, 128, 160, 192, 224,
and
248.