ASUS Vivobook X512UA-EJ278T RAM upgrade specifications
The ASUS Vivobook 15 Series X512UA-EJ278T contains DDR4-SDRAM memory with one accessible SO-DIMM slot for RAM upgrade capability. The laptop features on-board memory combined with a single SO-DIMM slot, supporting maximum RAM capacity of 12 GB. Compatible upgrades operate at 2400 MHz frequency. Memory specifications define the upgrade path for this specific ASUS model, enabling users to expand system memory beyond factory configurations by installing compatible DDR4 modules in the available slot.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 1x SO-DIMM |
| Form factor | On-board + SO-DIMM |
| Memory type | DDR4-SDRAM |
| Frequency | 2400 MHz |
| Maximum RAM | 12 GB |
| Voltage | 1.2V |
| Number of pins | 260-pin |
| Interface | PC4 |
| PC Speed Rating | PC4-2400 (PC4-19200) |
| Bandwidth | 19.2 GB/s |
| Laptop Release date | 04 August 2019 |
Additional Notes
- The presence of a single SO-DIMM slot alongside permanent on-board memory creates an asymmetrical dual-channel configuration when a module is added to the ASUS Vivobook X512UA-EJ278T.
- Bandwidth performance is limited to the lowest common denominator between the integrated chips and the removable stick, necessitating match-speed components to avoid clock-cycle latency.
- Total memory capacity is capped by the motherboard firmware, meaning modules exceeding 8 GB in the expansion slot will likely result in a failure to post or unrecognized capacity beyond the 12 GB limit.
- Accessing the expansion slot requires the removal of the entire base plate, which utilizes plastic internal clips prone to fatigue during repeated maintenance cycles.
- Memory modules with high-profile heat spreaders will interfere with the slim chassis clearance and prevent the bottom cover from seating flush against the internal frame.
- The integrated memory architecture ensures that at least 4 GB of RAM remains functional even if the removable module suffers a hardware failure, providing basic system redundancy.
- Physical installation of memory does not typically void the manufacturer warranty provided no internal components are damaged or thermal solutions displaced during the process.