The Inspiron™ 1564 system supports dual-channel DDR3 SDRAM with memory speeds of 1066 MHz. At 1066 MHz, this memory offers a significant increase of memory performance over previous platforms.
The memory solution is implemented in a dual-channel configuration, allowing the system to have twice the memory bandwidth while using the same memory technology.
Memory modules must be installed as a perfectly matched pair to take advantage of the dual-channel memory bus. If not a matched pair, the system's memory bus operates in a single-channel configuration.
Memory Configuration
Inspiron™ 1564 has two user-accessible SODIMM sockets, both slots can be accessed after removing the base cover. Basically, when both DIMM connectors are populated, the system has optimum dual-channel performance unless channels A and B have different amounts of memory.
Inspiron™ 1564 DIMM Configuration
Slot A
Slot B
Total Memory
1024 MB
None
1024 MB
1024 MB
1024 MB
2048 MB
2048 MB
1024 MB
3072 MB
2048 MB
2048 MB
4096 MB
4096 MB
1024 MB
5120 MB
4096 MB
2048 MB
6144 MB
4096 MB
3072 MB
7168 MB
4096 MB
4096 MB
8192 MB
4 GB Memory Barrier
The Inspiron™ 1564 system supports a maximum of 8 GB of memory. The Windows® XP as well as 32-bit versions of Windows Vista can only use a maximum of 4 GB of address space. However, the amount of memory available to the operating system is less than 4 GB. Certain components within the computer require memory address space in the 4 GB range. Any memory address space reserved for these components cannot be used by the operating system.
NOTE:
This is a limitation of a 32-bit architecture: the system can only address 4 GB of allocated memory. Allocated memory is made up of physical RAM and any I/O space needed by devices. Normally this is not a problem, but when a system has 4 GB of physical memory, the memory addresses needed to map RAM overlap the space needed for the I/O devices. In this case the need for I/O space takes precedence, and the amount of RAM visible to the operating system is limited to 4 GB minus the I/O allocation.
DELL-Jesse L
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November 11th, 2015 09:00
shrvn,
Below are the memory specs for this computer.
Memory
The Inspiron™ 1564 system supports dual-channel DDR3 SDRAM with memory speeds of 1066 MHz. At 1066 MHz, this memory offers a significant increase of memory performance over previous platforms.
Memory Configuration
Inspiron™ 1564 has two user-accessible SODIMM sockets, both slots can be accessed after removing the base cover. Basically, when both DIMM connectors are populated, the system has optimum dual-channel performance unless channels A and B have different amounts of memory.
4 GB Memory Barrier
The Inspiron™ 1564 system supports a maximum of 8 GB of memory. The Windows® XP as well as 32-bit versions of Windows Vista can only use a maximum of 4 GB of address space. However, the amount of memory available to the operating system is less than 4 GB. Certain components within the computer require memory address space in the 4 GB range. Any memory address space reserved for these components cannot be used by the operating system.
This is a limitation of a 32-bit architecture: the system can only address 4 GB of allocated memory. Allocated memory is made up of physical RAM and any I/O space needed by devices. Normally this is not a problem, but when a system has 4 GB of physical memory, the memory addresses needed to map RAM overlap the space needed for the I/O devices. In this case the need for I/O space takes precedence, and the amount of RAM visible to the operating system is limited to 4 GB minus the I/O allocation.