LENOVO Legion Y540-17IRH RAM upgrade specifications
The LENOVO Legion Y540-17IRH laptop features two SO-DIMM slots for DDR4-SDRAM memory upgrades. The system supports a maximum RAM capacity of 32 GB, with compatible modules operating at 2666 MHz frequency. Memory specifications enable users to upgrade from factory-installed configurations up to the maximum supported capacity. SO-DIMM form factor modules are required for compatible RAM installations in this model.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 2x SO-DIMM |
| Form factor | SO-DIMM |
| Memory type | DDR4-SDRAM |
| Frequency | 2666 MHz |
| Maximum RAM | 32 GB |
| Voltage | 1.2V |
| Number of pins | 260-pin |
| Interface | PC4 |
| PC Speed Rating | PC4-2666 (PC4-21328) |
| Bandwidth | 21.3 GB/s |
Additional Notes
- Dual channel architecture requires matching memory capacities and timings across both slots to maximize memory bandwidth for rendering and gaming workloads.
- The chipset architecture limits the motherboard to 16 GB modules per slot, preventing the installation of 32 GB single sticks.
- The Lenovo Legion Y540-17IRH utilizes a SO-DIMM form factor that precludes the use of standard desktop DIMM modules due to physical clearance and pin configuration differences.
- Higher frequency RAM modules will automatically downclock to the 2666 MHz hardware ceiling imposed by the memory controller.
- Installation of non-ECC unbuffered modules is mandatory as the internal bus does not support error-correcting code parity.
- Accessing the internal memory slots requires removal of the entire chassis base plate, which involves navigating plastic retention clips that are prone to mechanical stress.
- Replacing the factory-installed memory with 32 GB of total capacity necessitates the removal of existing modules since no open expansion bays remain.
- Latency performance is dictated by the slowest module installed, meaning mismatched CAS latency ratings will force the system to the least efficient common denominator.