Asus Z170-E Z170-E Users manual English - Page 22

Memory configurations, Recommended memory configurations - overclocking

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Recommended memory configurations 1.4.2 Memory configurations You may install 1 GB, 2 GB, 4 GB, 8GB, and 16 GB unbuffered non-ECC DDR4 DIMMs into the DIMM sockets. You can refer to the recommended memory population below. • 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. • 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. • 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: a) Use a maximum of 3GB system memory if you are using a 32-bit Windows® OS. b) Install a 64-bit Windows® OS when you want to install 4 GB or more on the motherboard. c) 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. • 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 2.5 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). • Visit the ASUS website at: www.asus.com for the latest QVL. 1-10 Chapter 1: Product Introduction

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1-10
Chapter 1: Product Introduction
1.4.2
Memory configurations
You may install 1 GB, 2 GB, 4 GB, 8GB, and 16 GB unbuffered non-ECC DDR4 DIMMs into
the DIMM sockets. You can refer to the recommended memory population below.
•
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.
•
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.
•
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:
a)
Use a maximum of 3GB system memory if you are using a 32-bit Windows® OS.
b)
Install a 64-bit Windows
®
OS when you want to install 4 GB or more on the
motherboard.
c)
For more details, refer to the Microsoft
®
support site at
com/kb/929605/en-us.
•
This motherboard does not support DIMMs made up of 512 Mb (64 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, refer to section
2.5 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).
•
Visit the ASUS website at: www.asus.com for the latest QVL.
Recommended memory configurations