Asus SABERTOOTH Z97 MARK 2/USB 3.1 - Page 26

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Chapter 1: Product introduction
Chapter 1
• 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.
• 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 4 GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3 GB 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 512 Mb (64 MB) 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 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.
• Memory modules with memory frequency higher than 2133MHz and their
correspondingtimingortheloadedXMPproleisnottheJEDECmemorystandard.
The stability and compatibility of the memory modules depend on the CPU’s
capabilities and other installed devices.
Memory congurations
You may install 2 GB, 4 GB and 8 GB unbuffered and non-ECC DDR3 DIMMs into the DIMM
sockets.