MSI Modern 15 A11SBU-648MX RAM upgrade specifications

The MSI Modern 15 A11SBU-648MX laptop features two SO-DIMM memory slots supporting DDR4-SDRAM upgrades. The system supports maximum RAM capacity of 32 GB total, with compatible modules operating at 3200 MHz frequency. Current memory configuration and available upgrade capacity depend on factory-installed specifications. SO-DIMM form factor modules are required for compatible memory expansion in this laptop model.

Memory Upgrade Specifications

SpecificationValue
Memory slots2x SO-DIMM
Form factorSO-DIMM
Memory typeDDR4-SDRAM
Frequency3200 MHz
Maximum RAM32 GB
Voltage1.2V
Number of pins260-pin
InterfacePC4
PC Speed RatingPC4-3200 (PC4-25600)
Bandwidth25.6 GB/s
Laptop Release date13 November 2021

Additional Notes

  • Dual channel mode requires identical module capacities in both slots to maximize memory controller bandwidth.
  • Physical access to the motherboard on the MSI Modern 15 A11SBU-648MX necessitates the removal of the entire bottom chassis cover which may involve piercing a factory seal sticker.
  • The integrated memory controller will downclock any modules exceeding 3200 MHz to match the native system bus Speed.
  • Expansion Beyond 32 GB is restricted by firmware limitations despite higher densities available in the SODIMM market.
  • Latencies such as CL22 are standard for this frequency but mixing modules with different timings results in the system defaulting to the slowest shared profile.
  • The 2 slot configuration implies that reaching the maximum capacity requires a 16 GB plus 16 GB setup rather than a single 32 GB module.
  • Thermal dissipation for high performance memory relies on the internal airflow of the thin chassis as no dedicated heat spreaders fit within the narrow SODIMM clearance.