LENOVO ThinkPad T480S RAM upgrade specifications
Lenovo ThinkPad T480S RAM upgrade specifications include one SO-DIMM slot compatible with DDR4-SDRAM memory operating at 2400 MHz. The laptop features 8GB soldered on-board memory with maximum RAM capacity of 24GB. Upgrade compatibility requires DDR4 SO-DIMM modules. Memory specifications support standard DDR4-2400 frequency for optimal performance and compatibility with this T-series business notebook configuration.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 1x SO-DIMM |
| Form factor | On-board + SO-DIMM |
| Memory type | DDR4-SDRAM |
| Frequency | 2400 MHz |
| Maximum RAM | 24 GB |
| Voltage | 1.2V |
| Number of pins | 260-pin |
| Interface | PC4 |
| PC Speed Rating | PC4-2400 (PC4-19200) |
| Bandwidth | 19.2 GB/s |
| Laptop Release date | 05 February 2018 |
Additional Notes
- Dual channel memory performance depends on matching the capacity of the 1 expansion slot with the soldered module.
- The presence of on board memory prevents a full replacement of the primary bank in the event of chip failure.
- Asymmetrical memory configurations exceeding 8 GB added capacity will cause the system to operate in flex mode where only a portion of the total RAM runs at dual channel speeds.
- Installing a module with a frequency higher than 2400 MHz results in automatic downclocking to match the hardwired speed of the soldered chips.
- The single slot architecture limits hardware redundancy compared to dual slot systems.
- Latency timings are restricted to the highest common denominator between the integrated memory and the removable SO DIMM.
- Total addressable memory remains static because the soldered portion cannot be disabled or upgraded.
- Maintenance involving memory diagnostic errors may require a motherboard replacement if the integrated portion fails.