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Memory conﬁgurations - overclock

UPC - 610839170258

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2.4.2 Memory configurations You may install 512MB, 1GB, 2GB and 4GB unbuffered ECC and non‑ECC DDR2 DIMMs into the DIMM sockets. • 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 configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation. • We recommend that you install the memory modules from the yellow slots for better overclocking capability. • Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. • Due to the memory address limitation on 32-bit Windows OS, when you install 4GB or more memory on the motherboard, the actual usable memory for the OS can be about 3GB or less. For effective use of memory, we recommend that you do any of the following: - Use a maximum of 3GB system memory if you are using a 32-bit Windows OS. - Install a 64-bit Windows OS when you want to install 4GB or more on the motherboard. • This motherboard does not support DIMMs made up of 256 megabit (Mb) chips or less. • The default memory operation frequency is dependent on its Serial Presence Detect (SPD), which is the standard way of accessing information from a memory module. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor-marked or at a higher frequency, see section 3.5 Ai Tweaker menu for manual memory frequency adjustment. • For system stability, use a more efficient memory cooling system to support a full memory load (4 DIMMs) or overclocking condition. Chapter 2 ASUS P5Q Turbo 2-11

Section	Page
Contents	3
Notices	7
Safety information	8
About this guide	9
P5Q Turbo specifications summary	11
Chapter 1: Product introduction	15
1.1 Welcome!	15
1.2 Package contents	15
1.3 Special features	16
1.3.1 Product highlights	16
1.3.2 ASUS special features	16
1.3.3 ASUS exclusive overclocking features	18
Chapter 2: Hardware information	19
2.1 Before you proceed	19
2.2 Motherboard overview	20
2.2.1 Motherboard layout	20
2.2.2 Layout contents	21
2.2.3 Placement direction	22
2.2.4 Screw holes	22
2.3 Central Processing Unit (CPU)	23
2.3.1 Installing the CPU	23
2.3.2 Installing the CPU heatsink and fan	26
2.3.3 Uninstalling the CPU heatsink and fan	27
2.4 System memory	28
2.4.1 Overview	28
2.4.2 Memory configurations	29
2.4.3 Installing a DIMM	35
2.4.4 Removing a DIMM	35
2.5 Expansion slots	36
2.5.1 Installing an expansion card	36
2.5.2 Configuring an expansion card	36
2.5.3 Interrupt assignments	37
2.5.4 PCI slots	38
2.5.5 PCI Express x1 slots	38
2.5.6 PCI Express 2.0 x16 slot (blue)	38
2.6 Jumpers	39
2.7 Connectors	42
2.7.1 Rear panel connectors	42
2.7.2 Audio I/O connections	43
2.7.3 Internal connectors	46
2.8 Starting up for the first time	57
2.9 Turning off the computer	57
Chapter 3: BIOS setup	59
3.1 Knowing BIOS	59
3.2 Updating BIOS	59
3.2.1 ASUS Update utility	60
3.2.2 ASUS EZ Flash 2 utility	62
3.2.3 ASUS CrashFree BIOS 3 utility	63
3.3 BIOS setup program	64
3.3.1 BIOS menu screen	64
3.3.2 Menu bar	64
3.3.3 Navigation keys	65
3.3.4 Menu items	65
3.3.5 Submenu items	65
3.3.6 Configuration fields	65
3.3.7 Pop-up window	65
3.3.8 Scroll bar	65
3.3.9 General help	65
3.4 Main menu	66
3.4.1 SATA 1-5; SATA_E1	66
3.4.2 Storage Configuration	68
3.4.3 AHCI Configuration	69
3.4.4 System Information	69
3.5 Ai Tweaker menu	70
3.5.1 Ai Overclock Tuner [Auto]	70
3.5.2 CPU Ratio Setting [Auto]	71
3.5.3 FSB Frequency [XXX]	71
3.5.4 PCIE Frequency [XXX]	71
3.5.5 FSB Strap to North Bridge [Auto]	71
3.5.6 DRAM Frequency [Auto]	71
3.5.7 DRAM Timing Control [Auto]	71
3.5.8 DRAM Static Read Control [Auto]	73
3.5.9 DRAM Read Training [Auto]	73
3.5.10 MEM. OC Charger [Auto]	73
3.5.11 Ai Clock Twister [Auto]	73
3.5.12 Ai Transaction Booster [Auto]	73
3.5.13 CPU Voltage [Auto]	74
3.5.14 CPU GTL Reference [Auto]	74
3.5.15 CPU PLL Voltage [Auto]	74
3.5.16 FSB Termination Voltage [Auto]	74
3.5.17 DRAM Voltage [Auto]	74
3.5.18 NB Voltage [Auto]	74
3.5.19 SB Voltage [Auto]	75
3.5.20 PCIE SATA Voltage [Auto]	75
3.5.21 Load-Line Calibration [Auto]	75
3.5.22 CPU Spread Spectrum [Auto]	75
3.5.23 PCIE Spread Spectrum [Auto]	75
3.5.24 CPU Clock Skew [Auto]	75
3.5.25 NB Clock Skew [Auto]	75
3.5.26 CPU Margin Enhancement [Optimized]	75
3.6 Advanced menu	76
3.6.1 CPU Configuration	76
3.6.2 Chipset	78
3.6.3 Onboard Devices Configuration	79
3.6.4 USB Configuration	80
3.6.5 PCIPnP	81
3.7 Power menu	82
3.7.1 Suspend Mode [Auto]	82
3.7.2 Repost Video on S3 Resume [No]	82
3.7.3 ACPI 2.0 Support [Disabled]	82
3.7.4 ACPI APIC Support [Enabled]	82
3.7.5 APM Configuration	83
3.7.6 Hardware Monitor	84
3.8 Boot menu	85
3.8.1 Boot Device Priority	85
3.8.2 Boot Settings Configuration	86
3.8.3 Security	87
3.9 Tools menu	89
3.9.1 ASUS EZ Flash 2	89
3.9.2 Drive Xpert Mode Update [Last Setting]	90
3.9.3 Express Gate [Enabled]	91
3.9.4 ASUS O.C. Profile	92
3.9.5 AI NET 2	93
3.10 Exit menu	94
Chapter 4: Software support	95
4.1 Installing an operating system	95
4.2 Support DVD information	95
4.2.1 Running the support DVD	95
4.2.2 Obtaining the software manuals	96
4.3 Software information	97
4.3.1 ASUS PC Probe II	97
4.3.2 ASUS AI Suite	98
4.3.3 ASUS EPU	99
4.3.4 ASUS Fan Xpert	100
4.3.5 ASUS TurboV	101
4.3.6 ASUS Turbo Key	102
4.3.7 ASUS Drive Xpert	103
4.3.8 ASUS Express Gate	104
4.3.9 Audio configurations	105
4.4 RAID configurations	106
4.4.1 RAID definitions	106
4.4.2 Installing Serial ATA hard disks	106
4.4.3 Setting the RAID item in BIOS	107
4.4.4 Intel® Matrix Storage Manager option ROM utility	107
4.5 Creating a RAID driver disk	111
4.5.1 Creating a RAID driver disk without entering the OS	111
4.5.2 Creating a RAID driver disk in Windows®	111

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ASUS P5Q Turbo

2-11

Chapter 2

2.4.2

Memory conﬁgurations

You may install 512MB, 1GB, 2GB and 4GB unbuffered ECC and non-ECC DDR2 DIMMs

into the DIMM sockets.

•

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 conﬁguration. Any excess

memory from the higher-sized channel is then mapped for single-channel operation.

•

We recommend that you install the memory modules from the yellow slots for better

overclocking capability.

•

Always install DIMMs with the same CAS latency. For optimum compatibility, it is

recommended that you obtain memory modules from the same vendor.

•

Due to the memory address limitation on 32-bit Windows OS, when you install 4GB

or more memory on the motherboard, the actual usable memory for the OS can be

about 3GB or less. For effective use of memory, we recommend that you do any of the

following:

- Use a maximum of 3GB system memory if you are using a 32-bit Windows OS.

- Install a 64-bit Windows OS when you want to install 4GB or more on the

motherboard.

•

This motherboard does not support DIMMs made up of 256 megabit (Mb) chips or

less.

•

The default memory operation frequency is dependent on its Serial Presence Detect

(SPD), which is the standard way of accessing information from a memory module.

Under the default state, some memory modules for overclocking may operate at a

lower frequency than the vendor-marked value. To operate at the vendor-marked or at

a higher frequency, see section

3.5 Ai Tweaker menu

for manual memory frequency

adjustment.

•

For system stability, use a more efﬁcient memory cooling system to support a full

memory load (4 DIMMs) or overclocking condition.