Asus P8Z68 DELUXE/GEN3 User Manual download pdf (Page 24)

2-6 Chapter 2: Hardware information

Chapter 2

Memory congurations

You may install 1GB, 2GB, 4GB and 8GB unbuffered and 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 conguration. Any excess

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

• Due to CPU behavior, DDR3 2200/2000/1800 MHz memory module will run at DDR3

2133/1866/1600 MHz frequency as default.

• According to Intel CPU spec, DIMM voltage below 1.65V is recommended to protect

the CPU.

• 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.

For more details, refer to the Microsoft

support site at

http://support.microsoft.com/kb/929605/en-us.

• This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less

(Memory chip capacity counts in Megabit, 8 Megabit/Mb = 1 Megabyte/MB).

• 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

3.4 Ai Tweaker menu

for manual memory

frequency adjustment.

• For system stability, use a more efcient memory cooling system to support a full

memory load (4 DIMMs) or overclocking condition.

P8Z68 DELUXE/GEN3 Motherboard Qualied Vendors Lists (QVL)

DDR3 2200(O.C.) MHz capability

* The memory modules in 2200MHz and above are supported by this motherboard; however, the

actual frequency support varies depending on the O.C. margin of the installed CPU.

Vendors Part No. Size

SS/

Chip

Brand

Chip

NO.

Timing Voltage

DIMM socket support (Optional)

1 DIMM 2 DIMM 4 DIMM

G.SKILL F3-17600CL7D-4GBFLS(XMP) 4GB (2 x 2GB) DS - - 7-10-10-28 1.65 • • •

G.SKILL F3-17600CL8D-4GBPS(XMP) 4GB (2 x 2GB) DS - - 8-8-8-24 1.65 • •

G.SKILL F3-17600CL9D-4GBTDS(XMP) 4GB (2 x 2GB) DS - - 9-9-9-24 1.65 • •

KINGMAX FLKE85F-B8KHA(XMP) 4GB (2 x 2GB) DS - - - 1.5~1.7 • •

KINGMAX FLKE85F-B8KJAA-FEIS(XMP) 4GB (2 x 2GB) DS Kingmax N/A - - • •

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Asus P8Z68 DELUXE/GEN3 User Manual Page 24

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