FUJITSU LIFEBOOK S904 RAM upgrade specifications
FUJITSU LIFEBOOK S Series S904 laptop supports DDR3L-SDRAM memory upgrades with maximum capacity of 12 GB RAM. The system features one SO-DIMM slot for memory expansion, operating at 1600 MHz frequency. Memory configuration includes on-board storage plus expandable SO-DIMM slot. Compatible RAM upgrades enable users to enhance system performance by installing supported DDR3L-SDRAM modules into the available slot, subject to maximum capacity specifications.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 1x SO-DIMM |
| Form factor | On-board + SO-DIMM |
| Memory type | DDR3L-SDRAM |
| Frequency | 1600 MHz |
| Maximum RAM | 12 GB |
| Voltage | 1.35V (Low Voltage) |
| Number of pins | 204-pin |
| Interface | PC3L |
| PC Speed Rating | PC3L-1600 (PC3L-12800) |
| Bandwidth | 12.8 GB/s |
| Laptop Release date | 30 April 2015 |
Additional Notes
- The presence of on-board memory means that total capacity is fixed by a combination of a non-removable module and a single expansion slot.
- Upgrading the memory requires a 1.35V low-voltage module to ensure compatibility with the DDR3L power management controller.
- Asymmetrical memory configurations will cause the system to operate in flex mode rather than true dual-channel mode, impacting integrated graphics performance.
- The single slot architectural design on the FUJITSU LIFEBOOK S904 prevents the use of standard dual-stick memory kits.
- System throughput is restricted to single-channel bandwidth for any capacity exceeding the mirrored volume of the soldered memory chips.
- Physical installation of a higher frequency module will result in an automatic downclock to match the system bus speed limit of 1600 MHz.
- The internal hardware architecture imposes a hard ceiling on addressing space that cannot be bypassed via firmware or BIOS updates.