MSI Prestige PS42 8RA-277CA Modern RAM upgrade specifications

MSI PS42 8RA-277CA Modern MSI PS42 8RA-277CA Modern MSI PS42 8RA-277CA Modern MSI PS42 8RA-277CA Modern MSI PS42 8RA-277CA Modern

The MSI Prestige PS series PS42 8RA-277CA Modern laptop features DDR4-SDRAM memory specifications compatible with SO-DIMM form factor upgrades. The upgrade slots accommodate a single SO-DIMM module with maximum RAM capacity of 16 GB. Memory operates at 2666 MHz frequency. RAM upgrade specifications enable users to expand internal memory through the single available slot, supporting DDR4-SDRAM modules up to the specified maximum capacity for enhanced system performance.

Memory Upgrade Specifications

SpecificationValue
Memory slots1x SO-DIMM
Form factorSO-DIMM
Memory typeDDR4-SDRAM
Frequency2666 MHz
Maximum RAM16 GB
Voltage1.2V
Number of pins260-pin
InterfacePC4
PC Speed RatingPC4-2666 (PC4-21328)
Bandwidth21.3 GB/s
Laptop Release date25 November 2019

Additional Notes

  • The MSI Prestige PS42 8RA-277CA Modern contains only 1 accessible SO-DIMM slot, meaning memory upgrades require replacing the existing module rather than adding a second stick. This single-slot architecture limits expansion flexibility compared to dual-slot designs.
  • DDR4-2666 MHz represents a mobile-class frequency tier. Upgrading to faster DDR4 modules (3000 MHz, 3200 MHz) will not yield performance gains because the system controller locks operation to 2666 MHz specification, making premium high-frequency memory an unnecessary expense.
  • The 16 GB maximum capacity ceiling is a firmware or controller limitation, not a physical one. SO-DIMM technology supports 32 GB modules, but installation beyond 16 GB will either fail to post or the system will recognize only 16 GB, making any larger purchase a financial loss.
  • SO-DIMM modules are physically smaller than standard DIMM form factors, which confines compatible memory to mobile-grade products. Desktop DDR4 memory is physically incompatible and cannot be retrofitted.
  • Warranty coverage for memory replacement typically remains intact provided the module meets manufacturer specifications (DDR4, SO-DIMM, 2666 MHz or lower). Using OEM-matched components minimizes compatibility risk during any warranty claim window.
  • The single-slot configuration creates a single point of failure. If the installed module fails, the system becomes non-functional until replacement, unlike dual-slot systems where one module failure permits continued operation at reduced capacity.