ASUS ROG GA503RS-PH94 RAM upgrade specifications
The ASUS ROG Zephyrus G15 GA503RS-PH94 features DDR5-SDRAM memory upgrade specifications with one SO-DIMM slot available for expansion. The laptop includes on-board memory combined with a single SO-DIMM slot configuration. Maximum compatible RAM capacity reaches 40 GB total. Memory operates at 4800 MHz frequency. Upgrade options are limited to the single SO-DIMM slot, with DDR5 memory type required for compatibility with the GA503RS-PH94 model specifications.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 1x SO-DIMM |
| Form factor | On-board + SO-DIMM |
| Memory type | DDR5-SDRAM |
| Frequency | 4800 MHz |
| Maximum RAM | 40 GB |
| Voltage | 1.1V |
| Number of pins | 262-pin |
| Interface | PC5 |
| PC Speed Rating | PC5-4800 (PC5-38400) |
| Bandwidth | 38.4 GB/s |
| Laptop Release date | 04 September 2022 |
Additional Notes
- The presence of a single SO-DIMM slot combined with soldered memory implies that memory upgrades will result in asymmetrical dual-channel configurations if the module capacity differs from the on-board chips.
- Total memory capacity is capped at 40 GB because the ASUS ROG GA503RS-PH94 utilizes 8 GB of non-removable RAM paired with a maximum 32 GB expansion module.
- The integrated memory architecture prevents a full replacement of the base memory if a single chip fails, requiring a motherboard replacement rather than a simple module swap.
- Latency and bandwidth performance are limited by the slowest component in the circuit, so installing modules with speeds higher than 4800 MHz will result in automatic downclocking to match the soldered memory profile.
- Synchronous dual-channel bandwidth is only achievable for the first 16 GB of memory when an 8 GB module is added, after which the remainder of the 32 GB module operates in single-channel mode.
- Physical access to the single expansion slot requires removing the entire lower chassis panel, which involves navigating hidden screws under rubber feet and potential tamper-evident seals depending on regional service policies.
- The transition to DDR5 technology necessitates using modules with 262 pins, which are physically incompatible with older DDR4 slots despite similar external dimensions.