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ASUS P8H77-I
1-15
1.7.2 Memory congurations
You may install 1GB, 2GB, 4GB and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM
sockets.
• 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 (2 DIMMs) or overclocking condition.
• 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, we
recommend 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 512Mb (64MB) chips or less.
• The maximum 32GB memory capacity can be supported with 8GB or above DIMMs.
ASUS will update the memory QVL once the DIMMs are available in the market.
P8H77-I Motherboard Qualied Vendors Lists (QVL)
DDR3-2400 MHz capability
Vendors Part No. Size SS/DS
Chip
Brand
Chip
NO.
Timing Voltage
DIMM socket support
(Optional)
1 DIMM 2 DIMMs
CORSAIR CMGTX8(XMP) 8GB (2GBx 4) SS - - 10-12-10-27 1.65V • •
G.SKILL
F3-19200CL11Q-
16GBZHD(XMP1.3)
16GB (4GB x4) DS - - 11-11-11-31 1.65V • •
G.SKILL F3-19200CL9D-4GBPIS(XMP) 4GB (2x 2GB) DS - - 9-11-9-28 1.65V • •
GEIL GET34GB2400C9DC(XMP) 2GB DS - - 9-11-9-27 1.65V • •
KINGMAX FLLE88F-C8KKAA HAIS(XMP) 2GB SS - - 10-11-10-30 1.8V • •
Transcend
TX2400KLU-
4GK(427652)(XMP)
4GB (2 x 2GB) SS - - - 1.65V • •
Transcend
TX2400KLU-4GK
(381850)(XMP)
4GB (2x 2GB) SS - - 9 1.65V • •
Transcend
TX2400KLU-
4GK(374243)(XMP)
4GB (2x 2GB) DS - - 9 1.65V • •
PATRIOT PVV34G2400C9K(XMP) 4GB (2x 2GB) DS - - 9-11-9-27 1.65V • •
DDR3-2250 MHz capability
Vendors Part No. Size SS/DS
Chip
Brand
Chip
NO.
Timing Voltage
DIMM socket support
(Optional)
1 DIMM 2 DIMMs
Kingston KHX2250C9D3T1K2/4GX(XMP) 4GB (2x 2GB) DS - - 9-11-9-27 1.65V • •