Asus P5B-VM DO Specifications Page 31
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ASUS P5B-VM DO 1-19
• You may install varying memory sizes in Channel A and Channel B. The
system maps the total size of the lower-sized channel for the dual-channel
conguration. Any excess memory from the higher-sized channel is then
mapped for single-channel operation.
• Always install DIMMs with the same CAS latency. For optimum compatibility,
it is recommended that you obtain memory modules from the same vendor.
• If you install four 1 or 2GB memory modules, the system may only recognize
less than 3GB because the address space is reserved for other critical
functions. This limitation appears on Windows
®
XP 32-bit operation system
which does not support Physical Address Extension (PAE).
• If you install Windows
®
XP 32-bit operation system, a total memory of less
than 3GB is recommended.
• This motherboard does not support memory modules made up of 128 Mb
chips or double sided x16 memory modules.
Notes on memory limitations
• Due to chipset limitation, this motherboard can only support up to
8 GB on the operating systems listed below. You may install a maximum of
2 GB DIMMs on each slot, but only DDR2-533 and DDR2-667 2 GB density
modules are available for this conguration.
• Some old-version DDR2-800/667 DIMMs may not match Intel
®
’s
On-Die-Termination (ODT) requirement and will automatically downgrade
to run at DDR2-533. If this happens, contact your memory vendor to check
the ODT value.
• Due to chipset limitation, DDR2-800 with CL=4 will be downgraded to run
at DDR2-667 by default setting. If you want to operate with lower latency,
adjust the memory timing manually.
• Due to chipset limitation, DDR2-667 with CL=3 will be downgraded to run
at DDR2-533 by default setting. If you want to operate with lower latency,
adjust the memory timing manually.
• The total memory may has 8MB reduction under Single Channel mode, and
16MB reduction under Dual Channel mode because the address space
is reserved for the Intel
®
vPro
™
Technology and the Intel
®
Quiet System
Technology.
32-bit 64-bit
Windows 2000 Advanced Server Windows XP Professional x64 Edition
- Motherboard 1
- First Edition V1 2
- October 2006 2
- Contents 3
- Safety information 7
- About this guide 8
- Typography 9
- (continued on the next page) 10
- Product 13
- 1.1 Welcome! 14
- 1.2 Package contents 14
- 1.3 Special features 14
- ASUS P5B-VM DO 1-3 15
- 1.3.2 ASUS Features 16
- 1.3.3 ASUS Special Features 17
- P5B-VM DO 18
- 1.5.3 Motherboard layout 20
- 1.5.4 Layout contents 21
- Alignment key 25
- Gold triangle mark 25
- Load plate 25
- CPU notch 25
- Fastener 26
- Motherboard hole 26
- Narrow end 26
- Narrow end of the groove 29
- 32-bit 64-bit 31
- DDR2-800MHz capability 32
- DDR2-667MHz capability 33
- DDR2-553 MHz capability 34
- 1.7.3 Installing a DIMM 35
- 1.7.4 Removing a DIMM 35
- 1.8 Expansion slots 36
- 1.8.3 Interrupt assignments 37
- 1.8.4 PCI slots 39
- 1.8.5 PCI Express x4 slot 39
- 1.8.6 PCI Express x16 slot 39
- 1.10 Connectors 42
- ASUS P5B-VM DO 1-41 53
- BIOS setup 55
- DOS environment 56
- XP environment 56
- 2000 environment 56
- 2.1.3 AFUDOS utility 58
- Updating the BIOS le 59
- ASUS P5B-VM DO 2-7 61
- 2.1.5 ASUS Update utility 62
- ASUS P5B-VM DO 2-9 63
- 2.2 BIOS setup program 65
- 2.2.2 Menu bar 66
- 2.2.1 BIOS menu screen 66
- 2.2.3 Navigation keys 66
- Main menu items 67
- Scroll bar 67
- Pop-up window 67
- 2.3 Main menu 68
- 2.3.4 SATA1-6 69
- 2.3.5 IDE Conguration 70
- 2.3.6 System Information 71
- 2.4 Advanced menu 72
- Spread Spectrum [Auto] 73
- CPU VCore Voltage [Auto] 73
- DRAM Frequency [Auto] 73
- 2.4.2 USB Conguration 74
- 2.4.3 TPM Conguration 75
- 2.4.4 CPU Conguration 76
- ASUS P5B-VM DO 2-23 77
- North Bridge Conguration 78
- Memory Hole [Disabled] 79
- Video Function Conguration 79
- ASF Support [Disabled] 80
- ME HECI Conguration 80
- Congure Intel AMT Parameters 81
- HD Audio Controller [Enabled] 81
- LAN Option ROM [Disabled] 82
- ECP Mode DMA Channel [DMA3] 82
- Parallel Port IRQ [IRQ7] 82
- 2.4.7 PCI PnP 83
- 2.5 Power menu 84
- 2.5.5 APM Conguration 85
- 2.5.6 Hardware Monitor 86
- 2.6 Boot menu 87
- 2-34 Chapter 2: BIOS setup 88
- 2.6.3 Security 89
- 4.6.1 Boot Device Priority 89
- 2.7 Tools menu 91
- 2.8 Exit menu 92
- Software 93
- 3.2 Support CD information 94
- 3.2.2 Drivers menu 95
- 3.2.3 Utilities menu 96
- 3.2.4 Make Disk menu 97
- 3.2.5 Manuals menu 98
- 3.2.7 Other information 99
- Filelist 100
- Technical support form 100
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