Asus P8Q77-M2 Specifications Page 25
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1.5.2 Memory congurations
You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 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 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 optimal compatibility, we
recommend that you install memory modules of the same version or date code (D/C)
from the same vendor. Check with the retailer to get the correct memory modules.
• Memory module with memory frequency higher than 2133 MHz and its corresponding
timing or the loaded XMP Prole is not the JEDEC memory standard. The stability and
compatibility of these memory modules depend on the CPU's capabilities and other
installed devices.
• 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 512Mb (64MB) 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, refer to section 2.4 Ai Tweaker menu for manual memory
frequency adjustment.
• For system stability, use a more efcient memory cooling system to support a full
memory load (4 DIMMs) or overclocking condition.
P8Q77-M2 Motherboard Qualied Vendors Lists (QVL)
DDR3-2400 (O.C.) MHz capability
Vendors Part No. Size SS/DS
Chip
Brand
Chip NO. Timing Voltage
DIMM socket
support (Optional)
2 DIMMs 4 DIMMs
G.SKILL F3-19200CL11Q-16GBZHD(XMP1.3) 16GB(4GB x 4) DS - - 11-11-11-31 1.65V ●
KINGSTON KHX2400C11D3K4/8GX(XMP) 8GB(4GB x 2) SS - - - 1.65V ● ●
Due to Intel
®
3rd generation processors’ behavior, DDR3 2250 (and above)/2133/1866 MHz
memory modules run at DDR3 2200/2000/1800 MHz frequency as default.
- Motherboard 1
- August 2012 2
- First Edition 2
- Contents 3
- Chapter 2: BIOS information 4
- Appendices 5
- Safety information 6
- About this guide 7
- Typography 8
- Q77 Express Chipset 9
- Package contents 11
- Product introduction 13
- 1.2 Before you proceed 15
- 1.3 Motherboard overview 16
- 1.3.3 Motherboard layout 17
- 1.3.4 Layout contents 18
- P8Q77-M2 19
- 1.4.1 Installing the CPU 20
- ASUS P8Q77-M2 21
- 1.5 System memory 24
- 1.5.2 Memory congurations 25
- DDR3-1333 MHz capability 27
- DDR3-1066 MHz capability 27
- 1.5.3 Installing a DIMM 28
- 1.6 Expansion slots 29
- 1.7 Jumpers 30
- (Default) 31
- Clear RTC 31
- 1.8 Connectors 32
- 1.8.2 Internal connectors 33
- +5VSB_MB 35
- Chassis Signal 35
- Speaker Out 36
- SATA6G_2 37
- SATA6G_1 37
- SATA3G_2 38
- SATA3G_1 38
- SATA3G_4 38
- SATA3G_3 38
- 1.9 Onboard switches 40
- 1.10 Onboard LEDs 41
- 1.11 Software support 42
- 1.11.3 Intel 43
- SBA support 43
- BIOS information 45
- 2.1.2 ASUS EZ Flash 2 46
- Recovering the BIOS 47
- 2.1.4 ASUS BIOS Updater 48
- Updating the BIOS le 49
- 2.2 BIOS setup program 50
- Advanced Mode 52
- Menu items 52
- Back button 52
- Submenu items 52
- Pop-up window 53
- Scroll bar 53
- Navigation keys 53
- General help 53
- Conguration elds 53
- 2.3 Main menu 54
- Administrator Password 55
- User Password 55
- 2.4 Ai Tweaker menu 56
- 2.4.3 GPU Boost [OK] 57
- 2.4.4 DRAM Timing Control 57
- 2.4.5 CPU Power Management 57
- 2-14 ASUS P8Q77-M2 58
- 2.5 Advanced menu 59
- 2.5.2 CPU Conguration 60
- 2.5.3 PCH Conguration 61
- 2.5.4 SATA Conguration 62
- 2.5.8 USB Conguration 64
- 2.5.7 AMT Conguration 64
- 2.5.10 APM 66
- 2.5.12 Network Stack 68
- 2.6 Monitor menu 69
- CPU Upper Temperature [70] 70
- CPU Lower Temperature [20] 70
- 2.7 Boot menu 72
- 2.7.5 Fast Boot [Enabled] 73
- 2.7.7 Setup Mode [EZ Mode] 74
- 2.7.9 CSM Parameters 74
- Secure Boot Mode [Standard] 75
- Key Management 75
- 2.7.12 Boot Override 76
- 2.8 Tools menu 77
- 2.9 Exit menu 78
- ASUS contact information 81
- DECLARATION OF CONFORMITY 82
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