MSI Modern 15 A5M-221 RAM upgrade specifications
The MSI Modern 15 A5M-221 laptop features DDR4-SDRAM memory upgrade specifications with two SO-DIMM slots supporting maximum capacity of 64 GB. Compatible RAM modules operate at 3200 MHz frequency. The upgrade supports DDR4 memory type in SO-DIMM form factor, enabling users to expand system memory by replacing or adding compatible modules. Specifications indicate the device accommodates standard laptop memory upgrades for enhanced multitasking performance and application compatibility.
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 February 2022 |
Additional Notes
- The MSI Modern 15 A5M-221 memory architecture supports dual-channel configuration through 2 SO-DIMM slots, enabling symmetric bandwidth delivery when both slots are populated with matched capacity modules.
- Maximum addressable memory reaches 64 GB total, achieved through 2x 32 GB SO-DIMM modules at DDR4-3200 specifications, representing a significant margin above typical workload requirements for this form factor.
- DDR4-3200 frequency specification establishes the upper operational ceiling; installation of higher-frequency modules (DDR4-3600, DDR4-4000) will result in automatic downclocking to 3200 MHz, negating any performance premium from faster variants.
- SO-DIMM physical constraints require low-profile memory modules; standard UDIMM modules or those exceeding 32 mm in height will not physically install, regardless of electrical compatibility or capacity rating.
- Single-slot population creates asymmetric memory access patterns, forcing the system to operate in single-channel mode and reducing effective memory bandwidth by approximately 50 percent compared to dual-channel operation.
- Mixing memory modules of different capacities (e.g., 8 GB plus 32 GB) remains technically functional but reduces thermal balance across the 2 slots and may complicate troubleshooting if performance issues emerge.
- DDR4-SDRAM aging characteristics and BIOS memory training algorithms may impose practical ceilings below the 64 GB theoretical maximum on certain production batches; validation testing with the exact module model code against this laptop remains warranted before installation.