Esse setting é um dos mais criticos vê o que se diz no fórum Amdmb acerca disso - "SDRAM 1T Command Disabled (only experienced overclockers or people with low densities of RAM should ever set this to Enabled) "
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* MSI KT3 ULTRA SERIES BIOS SETTINGS GUIDE *
- written by: Mr Steveo and RacerX27
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Standard CMOS Features
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Time Set Correctly Upon first POST and after each BIOS Flash
Date Set Correctly Upon first POST and after each BIOS Flash
Primary IDE Master
Type AUTO
32Bit transfer Mode ON
Primary IDE Slave
Type AUTO
32 Bit Transfer Mode ON
Secondary IDE Master
Type **CDROM ** (If using a HDD or no drive set to AUTO If using a CD/DVD drive set to CDROM)
32 Bit Transfer Mode ON
***THe above recommendation for Secondary Master is different from the other channels to directly work around a bug in the BIOS Please follow the above instructions closely For more information, see my first reply in this thread
http://www.amdmb.com/vb/showthread....threadid=124773 ***
Secondary IDE Slave
Type AUTO
32 Bit Transfer Mode ON
Floppy Drive A Set Appropriately
Floppy Drive B Not Installed (for most people)
Boot Sector Virus Protection Disabled – If you really want to use this feature make sure its at least disabled during partitioning, formatting and loading of the OS
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Advanced BIOS Features
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Quick Boot Enabled
Full Screen Logo Show Disabled
Boot Sequence
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1st Boot Device Floppy
2nd Boot Device CDROM/DVD whatever you use
3rd Boot Device IDE 0 (set at IDE0 for non RAID OS, and for RAID OS where a regular IDE hard drive exists also – If all you have for hard drives is a RAID array, set this option to Disabled)
Try Other Boot Devices Yes
S.M.A.R.T. for Hard Disks Disabled
BootUp Num-Lock On
Floppy Drive Swap Disabled
Floppy Drive Seek Disabled
Primary Display VGA/EGA
Password Check Setup
Boot to OS/2 No
Internal Cache WriteBack
System BIOS Cacheable Disabled
C000,32k Shadow Disabled
APIC Function Enabled ("Enabled" functions well on this board under Windows 2000 and XP and with most newer hardware PCI cards and drivers.
If you are using Windows 9x/Me or TV tuner cards or winmodems or extremely old PCI cards/drivers set to "Disabled"
If you change this setting after Windows has been loaded you may need to reinstall the OS)
MPS Table Version 1.4
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Advanced Chipset Features
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DRAM Timing Control
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Current Host Clock Displays current FSB Frequency
Configure SDRAM Timing By SPD (Set to User later if trying more aggressive RAM timings)
SDRAM frequency HCLK for PC2100 HCLK+33 for PC2700 and higher. If you plan on overclcoking the FSB or use extremely aggressive RAM timings this may need to be set at HCLK)
SDRAM CAS# Latency 2.5 (setting to 2 gives faster performance)
Row Precharge Time 3T (setting to 2 gives faster performance)
RAS Pulse Width 6T (setting to 5 gives faster performance – if RAM becomes unstable this is the first timing to lower back to default)
RAS to CAS Delay 3T (setting to 2T gives faster performance)
SDRAM Bank Interleave Disabled (setting to enabled gives Faster Performance – If RAM becomes unstable this is the second setting to return to default)
SDRAM Burst Length 4QW (8QW should theoretically be faster but on many MSI boards is slower…still testing this setting)
SDRAM 1T Command Disabled (only experienced overclockers or people with low densities of RAM should ever set this to Enabled)
Fast Command Fast (start here and if Windows installs stable set to Ultra. If you use aggressive RAM timings you may need to return this to default/Normal)
AGP timing Control
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AGP Mode Auto
AGP Comp. Driving Auto (If you have problems with your graphics card or crashing out of 3D Games, this setting may need adjusted. If you have never used this feature before seek help in the forum)
Manual AGP Comp. driving same as above
AGP Fast Write Disabled (theres no reasonable basis to enable this)
AGP Aperture Size 64 or 128 (higher settings can cause compatibility problems with some software)
AGP Master 1 W/S Write Disabled (Enabled theoretically should be faster but is not on many MSI motherboards)
AGP Master 1 W/S Read Disabled (Enabled theoretically should be faster but is not on many MSI motherboards)
AGP Read Synchronization Disabled
PCI Delay Transaction Disabled
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Power Management Features
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IPCA Function Enabled
ACPI Standby State S1/POS
Call VGA at S3 Resuming Disabled
USB Wakeup From S3 Disabled
Power Management/APM Enabled
Power/Sleep LED Single LED
Suspend Time Out (Minute) Disabled
Display Activity Ignore
CPU Critical temperature Disabled
Power Button Function On/Off
After AC Power Loss Power Off
Set WakeUp Events
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Wake Up on Ring Disabled
Wake Up on PME Disabled (unless you use this feature. Also set to enabled for WOL)
Resume On KBC Disabled
Wake Up Key Any Key
Wake Up Password N/A
Resume on PS/2 Mouse Disabled
Resume By Alarm Disabled
Alarm Date 15
Alarm Hour 12
Alarm Minute 30
Alarm Second 30
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PnP/PCI Configurations
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Plug and Play Aware O/S - No (for Windows 2000 and XP)
-Yes (for Windows 9x/Me)
(For Dual Boot 9x/2000 start with "no" and change to "yes" if you have problems)
Clear NVRAM No (Set One time only to Yes After Installing New Hardware or Moving PCI Cards Around)
PCI Latency Timer 64 (Set Higher for better PCI RAID performance reduce if having sound or LAN problems)
PCI IDE BusMaster Enabled
Primary Graphics Adapter (beginning with BIOS v5.3) AGP for AGP card – PCI for PCI video card)
PCI Slot 1/5 IRQ Auto*
PCI Slot 2 IRQ Auto*
PCI Slot 3 IRQ Auto*
PCI Slot 4 IRQ Auto*
* there is a discerpency with the presence of these settings and the PCI table in the owners manual. Therefore leave on Auto unless a necessity Also, if APIC is enabled its best all these remain at Auto as well)
Fonte:
http://www.amdforums.com/showthread.php?s=&threadid=124482