MSI K8n Neo4 Manual

							3-20
MS-7125 ATX Mainboard
Power Button Function
This feature sets the function of the power button. Settings are:
[Power Off]The power button functions as normal power off button.
[Suspend] When you press the power button, the computer enters the
suspend/sleep mode, but if the button is pressed for more
than four seconds, the computer is turned off.
Restore On AC Power Loss
This item specifies whether your system will reboot after a power failure or interrupt
occurs. Available settings are:
[Off]Always leaves the computer in the power off state.
[On]Always leaves the computer in the power on state.
[Last State]Restores the system to the status before power failure
or interrupt occurred.
Wake-Up Event Activity
Press  and the following sub-menu appears.
Resume S3 by PS2/Keyboard, Resume S3 by PS2/Mouse
These fields allow the activity of the PS2 (keyboard and mouse) to wake up the
system from S3 sleep state. Settings: [Enabled], [Disabled].
Resume By PCI Device PME#
When set to [Enabled], the feature allows your system to be awakened from the
power saving modes through any event on PME (Power Management Event).
Settings: [Enabled], [Disabled].
Resume By RTC Alarm
The field is used to enable or disable the feature of booting up the system on a
scheduled time/date. Settings: [Enabled], [Disabled].
Date
The field specifies the date for Resume By RTC Alarm. Settings: [0]~[31].
HH:MM:SS
The field specifies the time for Resume By RTC Alarm. Format is 
. 
						

							3-21 BIOS Setup
PNP/PCI Configurations
This section describes configuring the PCI bus system and PnP (Plug & Play)
feature.  PCI, or Peripheral Component Interconnect, is a system which allows I/O
devices to operate at speeds nearing the speed the CPU itself uses when communi-
cating with its special components.  This section covers some very technical items
and it is strongly recommended that only experienced users should make any changes
to the default settings.
Resource Controlled By
The Award Plug and Play BIOS has the capacity to automatically configure all of the
boot and Plug and Play compatible devices. However, this capability means abso-
lutely nothing unless you are using a Plug and Play operating system such as Win-
dows
® 95/98. If you set this field to [Manual], choose specific resources by going into
each of the sub menu that follows this field (a sub menu is preceded by a “`”). The
settings are: [Auto (ESCD)], [Manual].
IRQ Resources
The items are adjustable only when Resources Controlled By is set to [Manual].
Press  and you will enter the sub-menu of the items. IRQ Resources list IRQ
3/4/5/7/9/10/11/12/14/15 for users to set each IRQ a type depending on the type of
device using the IRQ. Settings are:
[PCI Device]For Plug & Play compatible devices designed for PCI bus
architecture.
[Reserved] The IRQ will be reserved for further request. Primary Graphic’s Adapter
This item specifies which graphic card is your primary graphics adapter. Settings:
[First PCIE], [PCI Slot]. 
						

							3-22
MS-7125 ATX Mainboard
MSI Reminds You...
IRQ (Interrupt Request) lines are system resources allocated to I/O
devices. When an I/O device needs to gain attention of the operating
system, it signals this by causing an IRQ to occur. After receiving the
signal, when the operating system is ready, the system will interrupt
itself and perform the service required by the I/O device.
** PCI Express relative items **
Maximum Payload Size
This item allows you to set the PCI Express Maximum payload size per time . Settings:
[4096], [128], [256], [512], [1024], [2048]. 
						

							3-23 BIOS Setup
H/W Monitor
This section shows the status of your CPU, fan, overall system status, etc.
Monitor function is available only if there is hardware monitoring mechanism onboard.
Chassis Intrusion Detect
The field enables or disables the feature of recording the chassis intrusion status
and issuing a warning message if the chassis is once opened. To clear the warning
message, set the field to [Reset]. The setting of the field will automatically return to
[Enabled] later. Setting options: [Enabled], [Reset], [Disabled].
Smart CPU Fan Target
There are 2 pairs of Temperature/FAN Speed control: System Temperature with
System Fan, and CPU Temperature with CPU Fan. W83627THF provides the Smart
Fan system which can control the fan speed automatically depending on the current
temperature to keep it with in a specific range. Settings: [40
oC/104oF], [40oC/104oF],
[40oC/104oF], [Disabled].
PC Health Status
Press  and the following sub-menu appears.
Current System/CPU Temperature, System Fan/CPU Fan Speed, Vcore,
+12.0V, +3.3V, +5.0V, Battery, +5VSB
These items display the current status of all of the monitored hardware de-
vices/components such as CPU voltage, temperatures and all fans’ speeds. 
						

							3-24
MS-7125 ATX Mainboard
Cell Menu
The items in Cell Menu includes some important settings of CPU, AGP, DRAM
and overclocking functions.
Current CPU / DDR Clock
These two items show the current clocks of CPU & DDR. Read-only.
MSI Reminds You...
Change these settings only if you are familiar with the chipset.
High Performance Mode
This field allows you to select the DDR timing setting. Setting options: [Manual],
[Optimized].
Aggressive timing
This item allows you to enable or disable the memory clock. When [Enabled] is selected,
the timing delay of memory will be shorten to increase the performance. Setting
options: [Enabled], [Disabled]. 
						

							3-25 BIOS Setup
Dynamic Overclocking
Dynamic Overclocking Technology is the automatic overclocking function, included in
the MSI
TM’s newly developed CoreCellTM Technology. It is designed to detect the load
balance of CPU while running programs, and to adjust the best CPU frequency
automatically. When the motherboard detects CPU is running programs, it will speed
up CPU automatically to make the program run smoothly and faster. When the CPU is
temporarily suspending or staying in the low load balance, it will restore the default
settings instead. Usually the Dynamic Overclocking Technology will be powered only
when users PC need to run huge amount of data like 3D games or the video process,
and the CPU frequency need to be boosted up to enhance the overall performance.
Setting options:
[Disabled]Disable Dynamic Overclocking function.
[Private]1st level of overclocking, increasing the CPU frequency by 1%.
[Sergeant] 2nd level of overclocking, increasing the CPU frequency by 3%.
[Captain]3rd level of overclocking, also the default value of Load High
Performance Defaults, increasing the CPU frequency by 5%.
[Colonel]4th level of overclocking, increasing the CPU frequency by 7%.
[General] 5th level of overclocking, increasing the CPU frequency by 9%.
[Commander]6th level of overclocking, increasing the CPU frequency by 11%.
MSI Reminds You...
Even though the Dynamic Overclocking Technology is more stable
than manual overclocking, basically, it is still risky. We suggest user
to make sure that your CPU can afford to overclocking regularly first.
If you find the PC appears to be unstable or reboot incidentally, its
better to disable the Dynamic Overclocking or to lower the level of
overclocking options. By the way, if you need to conduct overclocking
manually, you also need to disable the D.O.T Ranger first.
Adjust CPU FSB Frequency
This item allows you to select the CPU Front Side Bus clock frequency (in MHz).
Select the number between [200]~[400] for needed frequency.
HT Frequency
This setting specifies the maximum operating frequency of the link’s transmitter clock.
Setting options: [1x], [1.5x], [2x], [2.5x], [3x], [4x], [5x].
HT Width
This field allows you to set the HT Width between CPU & Chip.↑ mark means Chip to
CPU HT Width. And ↓ mark means CPU to Chip HT Width. Setting options: [ ↓ 8 ↑ 8],
[ ↓ 16 ↑ 8], [↓ 8 ↑16], [ ↓16  ↑16].
CPU Spread Spectrum
This setting is used to enable or disable the CPU Spread Spectrum feature. When
overclocking the CPU, always set it to [Disabled]. Setting options: [Center Spread],
[Disabled]. 
						

							3-26
MS-7125 ATX Mainboard
SATA Spread Spectrum
This setting is used to enable or disable the SATA Spread Spectrum feature. Setting
options: [Disabled], [Down Spread].
PCIE Spread Spectrum
This setting is used to enable or disable the CPU Spread Spectrum feature. When
overclocking the CPU, always set it to [Disabled]. Setting options: [Disabled], [Down
Spread].
PCIE Clock
The system board designer selects whether the PCIE clock is tightly synchronized
with the CPU clock or is asynchronous. Setting options: [100MHz]~[145MHz].
SSE/ SSE2 Instructions
This setting disables/enables the SSE/SSE2 Instructions. The Streaming SIMD Exten-
sions (SSE) were introduced in the Pentium III processor. The SSE extensions con-
sist of a new set of instructions and a new set of registers. These instructions and
registers are designed to allow Single-Instruction Multiple-Data (SIMD) computations
to be made on single-precision floating-point numbers.
The Streaming SIMD Extensions 2 (SSE2) were introduced in the Pentium 4 and Intel
Xeon processors. They consist of a new set of instructions that operate on the XXM
and MXCSR registers and perform SIMD operations on double-precision floating-
point values and on integer values.Several of these new SSE/SSE2 instructions also
operate in the MMX registers. Setting options: [Enabled], [Disabled].
Cool’n’Quiet control
This feature is especially designed for AMD Athlon processor, which provides a CPU
temperature detecting function to prevent your CPU’s from overheating due to the
heavy working loading. Setting options: [Disabled], [Enabled]. 
						

							3-27 BIOS Setup
Adjust CPU Ratio
This item lets you adjust the CPU ratio. Setting to [Startup] enables the CPU running at
the fastest speed which is detected by system. Setting options are: [Startup], [x4]~
[x12].
Adjust CPU VID
This item lets you adjust the CPU VID. Setting to [Startup] enables the CPU running at
the default VID which is detected by system. Setting options are: [Startup], [0.825V],
[0.850V],[0.875V],~, [1.550V].
CPU Voltage
This feature allows you to trim the voltage of CPU. Setting options are: [By CPU VID],
[Over VID 3.3%], [Over VID 5.0%],[Over VID 8.3%].
Memory Voltage
Adjusting the DDR voltage can increase the DDR speed.  Any changes made to this
setting may cause a stability issue, so changing the DDR voltage for long-term
purpose is NOT recommended. Setting options are: [Auto], [2.50V]~[2.85V].
NF4 Voltage
NV4 voltage is adjustable in the field. Setting options are: [1.50V]~[1.85V].
MSI Reminds You...
The settings shown in different color in CPU Voltage, Memory Volt-
age and NF4 Voltage help to verify if your setting is proper for your
system.
Gray:Default setting.
Yellow:High performance setting.
Red:Not recommended setting and the system may be
unstable.
Changing CPU VID, CPU Voltage, Memory Voltage and NF4 Volt-
age may result in the instability of the system; therefore, it is NOT
recommended to change the default setting for long-term usage. 
						

							3-28
MS-7125 ATX Mainboard
Optimized Defaults
The two options on the main menu allow users to restore all of the BIOS
settings to the default Optimized values. The Optimized Defaults are the default
values set by the mainboard manufacturer specifically for optimal performance of the
mainboard. The Fail-Safe Defaults are the default values set by the BIOS vendor for
stable system performance.
When you select Load Optimized Defaults, a message as below appears:
Pressing Y loads the default factory settings for optimal system performance. 
						

							3-29 BIOS Setup
BIOS Setting Password
When you select this function, a message as below will appear on the screen:
Type the password, up to eight characters in length, and press . The
password typed now will replace any previously set password from CMOS memory.
You will be prompted to confirm the password. Retype the password and press
. You may also press  to abort the selection and not enter a password.
To clear a set password, just press  when you are prompted to enter the
password. A message will show up confirming the password will be disabled. Once
the password is disabled, the system will boot and you can enter Setup without
entering any password.
When a password has been set, you will be prompted to enter it every time you try
to enter Setup. This prevents an unauthorized person from changing any part of your
system configuration.