FUJITSU LIFEBOOK E559 RAM upgrade specifications

FUJITSU E559 FUJITSU E559 FUJITSU E559 FUJITSU E559

The FUJITSU LIFEBOOK E559 laptop features DDR4-SDRAM memory specifications with two SO-DIMM slots for RAM upgrades. Maximum compatible memory capacity reaches 32 GB total, supporting DDR4 modules operating at 2400 MHz frequency. The upgrade slots accommodate standard SO-DIMM form factor memory modules. These specifications define the memory expansion capabilities and compatibility parameters for FUJITSU LIFEBOOK E series E559 model configurations.

Memory Upgrade Specifications

SpecificationValue
Memory slots2x SO-DIMM
Form factorSO-DIMM
Memory typeDDR4-SDRAM
Frequency2400 MHz
Maximum RAM32 GB
Voltage1.2V
Number of pins260-pin
InterfacePC4
PC Speed RatingPC4-2400 (PC4-19200)
Bandwidth19.2 GB/s
Laptop Release date13 May 2019

Additional Notes

  • The FUJITSU LIFEBOOK E559 uses standard voltage DDR4 rather than low-power DDR4L modules, which affects battery life compared to systems designed for LPDDR4.
  • The 2400 MHz frequency limitation means faster DDR4 modules rated at 2666 MHz or 3200 MHz will downclock to match the system's maximum supported speed.
  • Both SO-DIMM slots must remain accessible without full disassembly, though the bottom panel removal typically requires voiding security seals on business-class systems.
  • The 32 GB ceiling requires 2 modules of 16 GB each in dual-channel configuration, as single 32 GB SO-DIMM modules exceed the per-slot capacity limit.
  • Mixing modules with different densities or timings may force the memory controller to operate at the lowest common specifications, reducing performance.
  • Single-channel operation with only 1 occupied slot cuts memory bandwidth in half, creating bottlenecks in integrated graphics workloads and multi-threaded applications.
  • The chipset does not support ECC SO-DIMM modules despite their physical compatibility, causing boot failures or system instability if installed.
  • Upgrading beyond the factory-installed capacity may require BIOS updates to ensure proper memory training and stability at maximum density.
  • The DDR4-2400 specification operates at PC4-19200 bandwidth rating, delivering 19.2 GB/s theoretical throughput per channel under ideal conditions.
  • Non-standard or XMP-profiled gaming modules lack compatibility with the business-oriented memory controller, which expects JEDEC-compliant SPD programming.