ACER Extensa EX215-54-79BP RAM upgrade specifications
The ACER Extensa Series 15 model EX215-54-79BP supports DDR4-SDRAM memory upgrade specifications. The laptop features 1 SO-DIMM slot for memory expansion, with maximum compatible RAM capacity of 12 GB. Memory operates at 2133 MHz frequency. The device utilizes an on-board memory configuration combined with a single SO-DIMM slot for upgrade capability. RAM upgrade specifications indicate DDR4-SDRAM compatibility for the ACER EX215-54-79BP notebook model within the Extensa family lineup.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 1x SO-DIMM |
| Form factor | On-board + SO-DIMM |
| Memory type | DDR4-SDRAM |
| Frequency | 2133 MHz |
| Maximum RAM | 12 GB |
| Voltage | 1.2V |
| Number of pins | 260-pin |
| Interface | PC4 |
| PC Speed Rating | PC4-2133 (PC4-17064) |
| Bandwidth | 17.1 GB/s |
| Laptop Release date | 10 April 2021 |
Additional Notes
- The Acer Extensa EX215-54-79BP contains soldered on-board memory paired with a single upgradeable SO-DIMM slot, meaning the total 12 GB maximum consists of fixed memory plus one user-replaceable module.
- DDR4-2133 MHz operation represents a legacy frequency tier; matching this speed is necessary to avoid the system defaulting to the slower module's clock rate, which would reduce effective bandwidth across both memory channels.
- A single SO-DIMM slot creates a hard ceiling on expansion. Replacing the existing module rather than adding a second one is the only upgrade path available within the 12 GB total limit.
- Memory bottlenecking occurs when the soldered portion and the SO-DIMM operate at mismatched capacities; asymmetrical dual-channel configuration reduces memory throughput by approximately 20-25% compared to balanced configurations.
- SO-DIMM modules meeting DDR4-2133 specifications are increasingly scarce in retail channels, as manufacturers have shifted production toward DDR4-3200 and faster variants; sourcing compatible replacement modules may require specialty vendors.
- Warranty coverage typically permits SO-DIMM replacement without voiding protection, provided no solder damage occurs during removal and the module matches approved specifications.
- Physical space constraints inherent to 15.6-inch thin-and-light chassis design limit SO-DIMM accessibility; removal often requires battery disconnection and partial keyboard or palm rest disassembly to reach the module slot safely.