MSI Modern 15 A11SB-845ES RAM upgrade specifications
MSI Modern 15 A11SB-845ES laptop RAM upgrade specifications include two SO-DIMM memory slots supporting DDR4-SDRAM modules operating at 3200 MHz frequency. Maximum memory capacity compatible with the MSI Modern 15 series reaches 64 GB total. The upgrade specifications confirm SO-DIMM form factor RAM modules are required for memory expansion on the 15 A11SB-845ES model.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 2x SO-DIMM |
| Form factor | SO-DIMM |
| Memory type | DDR4-SDRAM |
| Frequency | 3200 MHz |
| Maximum RAM | 64 GB |
| Voltage | 1.2V |
| Number of pins | 260-pin |
| Interface | PC4 |
| PC Speed Rating | PC4-3200 (PC4-25600) |
| Bandwidth | 25.6 GB/s |
| Laptop Release date | 22 March 2022 |
Additional Notes
- The MSI Modern 15 A11SB-845ES uses SO-DIMM form factor memory, which is soldered onto a compact substrate and incompatible with standard UDIMM modules found in desktop systems. Replacement or expansion requires laptop-specific DDR4 modules.
- With 2 memory slots supporting up to 64 GB total capacity, the system permits symmetric dual-channel configurations (32 GB per slot) at 3200 MHz. Asymmetrical pairings (mismatched capacities) function but forfeit dual-channel bandwidth on the smaller module's capacity range.
- The 3200 MHz specification represents the maximum rated frequency for compatible modules. Actual operating speed depends on BIOS support and CPU memory controller specifications; 11th-generation Intel processors may operate DDR4 modules at lower effective speeds due to controller capabilities.
- Upgrading from factory configuration to maximum capacity requires both SO-DIMM slots to remain accessible without adhesive barriers or thermal pads obstructing the socket release mechanisms. Physical clearance around the keyboard area or removable bottom panel determines installation difficulty.
- DDR4-3200 SO-DIMM modules are commodity components with wide availability. Warranty preservation depends on whether the manufacturer classifies memory upgrades as user-serviceable; most OEM policies permit DDR4 module replacement without voiding coverage when performed correctly.
- Memory bandwidth saturation occurs at approximately 51 GB/s in dual-channel mode at 3200 MHz. Graphics-intensive or data-parallel workloads may experience latency constraints if system thermal management causes frequency throttling below rated specifications.