How to enable dual channel memory

What are Dual Channel, Single Channel and Flex mode? Which problems are forced to usage any kind of of them?


*
| 7 (4.00)
*
Loading...

You watching: How to enable dual channel memory


*

Broadly speaking, in concept a Dual Channel configuration doubles the data carry rate of your system compared to Single Channel mode: A matching module pair is bundled in addition to parallel access to both memory channels.

Below, we will describe, which needs and configurations are important for Dual Channel mode operation. First, we are looking at the Dual Channel mode of chip sets for DDR1 DRAM such as Intel i865, i875, in AMD-CPU incorporated Northbridge and so on (Dual Channel via symmetrical assembly)

During its breakthrough stperiods, the Dual Channel mode was improved and the demands for modules were modified also. This is why more recent chip sets for DDR2 RAM provide extended possibilities for DDR2, DDR3 and DDR4 units such as the Dual Channel (Interleaved) mode or the Flex mode.

Overview memory configurations:

Dual Channel mode via symmetric assembly – 2 or 4 DIMMs

The Dual Channel mode is activated by the device one by one for each memory channel if you insert 2 identical DIMMs as follows:

*

*

Requirements for Dual Channel mode

Arrangement of the DIMMs in pairs in eextremely memory channel (module pair)Identical module capacity of the module pair (128MB, 256MB, 512MB, 1GB, and so on.)Identical DRAM modern technology of the module pair (128MB, 256MB, 512MB or 1GB)Identical DRAM bus width of the DRAMs offered on the module pair (x8 or x16)Both modules either only single-sided (1 rank) or just dual-sided (2 rank)Mirror-inverted assembly of the memory slots

Please note: Configurations that do not fulfil these requirements, immediately work-related in Single Channel mode. The slowest DIMM built into the mechanism determines the pace of the bus clock and also the memory accessibility for the complete RAM.

The following demands within a module pair do not have to be fulfilled:

Same manufacturer of the module or the DRAM devicesIdentical timing, accessibility times and so on.Same speed category of the DDR modules (PC2100, PC2700 or PC3200)
*

Dual Channel (Interleaved) mode

The Dual Channel (Interleaved) mode provides the highest performance. It is triggered whenever the certain complete capacity of the integrated modules is identical in both channels. The modules’ pace and DRAM organisation have the right to differ. The slowest DIMM constructed into the system determines the pace of the bus clock and the memory accessibility for the complete RAM. However, it is vital that the total capacity of channel A and channel B is the same – a requirement that have the right to be met via two, three or four DIMMs.

Dual Channel (Interleaved) mode configuration through two DIMMs

*

Dual Channel (Interleaved) mode configuration through three DIMMs

*

Dual Channel (Interleaved) mode configuration through four DIMMs

*

Requirements for Dual Channel (Interleaved) mode

Arrangement of the DIMMs in both memory channelsIdentical total capacity in all memory networks (256MB, 512MB, 1GB, etc.)Mirror-inverted assembly of the memory slots

Please note: Configurations that execute not fulfil these requirements, automatically occupational in Single Channel mode.

See more: Download Windows 7 Home Premium Oa Lenovo Windows 7 Home Premium Iso Legally

The adhering to demands within a module pair execute not have to be fulfilled:

Same manufacturer of the module or the DRAM devicesIdentical timing, accessibility times etc.Same rate category of the DDR modules (PC2100, PC2700 or PC3200)Identical DRAM modern technology of the module pair (128MB, 256MB, 512MB or 1GB)Identical DRAM bus width of the DRAMs offered on the module pair (x8 or x16)Both modules either only single-sided (1 rank) or only dual-sided (2 rank)Identical timing, access times and so on.

Please note: The slowest DIMM constructed into the device determines the pace of the bus clock and also the memory accessibility for the finish RAM.

Single Channel (Asymmetric) mode

The Single mode is set off once the specific full capacity of the integrated modules differs in both channels. The slowest DIMM built into the system determines the pace of the bus clock and the memory access for the finish RAM.

Single Channel (Asymmetric) mode configuration via one DIMM

*

Single Channel (Asymmetric) mode configuration with three DIMMs

*

Dual Channel (Flex mode)

This brand-new, added technology provides highest adaptability concerning the assembly of memory modules. It quite revokes all constraints and requirements for memory modules to day. The Dual Channel mode likewise works once utilizing only 2, three or 4 DIMMs through various full capacity in the memory networks.

The highest capacity obtainable in both memory channels is being supplied in Dual Channel mode. Moreover, the deal with range operated in Dual Channel mode is mapped in the lowest, yet initially and greatly used location. The continuing to be memory is being run in Single Channel mode.

See more: How To Fix Sound Blaster Z Setup Is Unable To Detect A Supported Product

Dual Channel (Flex mode) configuration via 2 DIMMs

*

Requirements for the Flex mode

One DIMM minimum in each memory channelMirror-inverted assembly of the memory slots

The following requirements do not have to be fulfilled:

Same manufacturer of the module or the DRAM devicesIdentical total capacity in each memory channel (256MB, 512MB, 1GB, and so on.)Identical DRAM modern technology of the module pair (128MB, 256MB, 512MB or 1GB)Identical DRAM bus width of the DRAMs used on the module pair (x8 or x16)Both modules either just single-sided (1 rank) or only dual-sided (2 rank)Identical timing, access times and so on.Same rate category of the DDR modules (PC2100, PC2700 or PC3200)

Please note: The slowest DIMM built into the device determines the pace of the bus clock and the memory access for the complete RAM.