Fujitsu LIFEBOOK S Series - Memory Expansion

Memory expansion
Your notebook has 256 Mbyte - 2 Gbyte of main memory installed, depending on the upgrade level.
The notebook will not start without memory modules, as no fixed main memory is installed.
Your notebook supports the Dual-Channel DDR2 technology, which increases the processor and
main memory performance.
The Dual-Channel DDR2 technology can only be used with two identical memory modules.
When two different memory modules are installed, only the "single-channel" performance
is supported.
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An installation overview is provided in the following table:
Memory slot 1 Memory slot 2 Mode Performance Total main memory
256 MB - Single channel Single channel 256 MB
256 MB 256 MB Dual channel
interleave mode
Dual channel 512 MB
256 MB 512 MB Dual channel
asymmetric
mode
Single channel 768 MB
256 MB 1 GB Dual channel
asymmetric
mode
Single channel 1,25 GB
512 MB - Single channel Single channel 512 MB
512 MB 256 MB Dual channel
asymmetric
mode
Single channel 768 MB
512 MB 512 MB Dual channel
interleave mode
Dual channel 1 GB
512 MB 1 GB Dual channel
asymmetric
mode
Single channel 1,50 GB
1 GB - Single channel Single channel 1 GB
1 GB 512 MB Dual channel
asymmetric
mode
Single channel 1,25 GB
1 GB 512 MB Dual channel
asymmetric
mode
Single channel 1,50 GB
1 GB 1 GB Dual channel
interleave mode
Dual channel 2 GB
A26391-K164-Z120-1-7619, edition 2 77