ASUS ROG GX551QS-HB178T RAM upgrade specifications
The ASUS ROG Zephyrus Duo 15 SE GX551QS-HB178T features DDR4-SDRAM memory specifications compatible with upgrade configurations. The laptop contains one SO-DIMM slot available for RAM expansion. Maximum memory capacity reaches 48 GB, with an on-board configuration combined with single SO-DIMM form factor. The compatible memory operates at 3200 MHz frequency. Specifications indicate upgrade potential through the accessible SO-DIMM slot, enabling users to expand total system memory within the maximum supported capacity of 48 GB.
Memory Upgrade Specifications
| Specification | Value |
|---|---|
| Memory slots | 1x SO-DIMM |
| Form factor | On-board + SO-DIMM |
| Memory type | DDR4-SDRAM |
| Frequency | 3200 MHz |
| Maximum RAM | 48 GB |
| Voltage | 1.2V |
| Number of pins | 260-pin |
| Interface | PC4 |
| PC Speed Rating | PC4-3200 (PC4-25600) |
| Bandwidth | 25.6 GB/s |
| Laptop Release date | 13 July 2021 |
Additional Notes
- The ASUS ROG GX551QS-HB178T features soldered memory combined with a single expansion slot, meaning the base capacity cannot be replaced or removed during upgrades.
- The 48 GB maximum capacity indicates 16 GB of non-removable soldered memory paired with support for a single 32 GB module in the available slot.
- DDR4-3200 requires CPU and chipset support for that speed bin, otherwise the module will downclock to the highest mutually supported frequency.
- Single-channel SO-DIMM population alongside soldered memory creates an asymmetric configuration that may limit dual-channel bandwidth utilization depending on capacity distribution.
- Operating at 3200 MHz native speed requires XMP/DOCP profile support in the BIOS, as JEDEC standard for DDR4 defaults to 2133 or 2400 MHz.
- The SO-DIMM form factor requires 260-pin modules specifically designed for mobile platforms, as standard 288-pin desktop DIMMs are physically incompatible.
- Mixing different memory densities between soldered and socketed modules may force the system into single-channel mode for portions of the address space beyond the smaller capacity.
- Thermal performance can degrade with higher-capacity modules due to increased die count and power draw within the confined laptop chassis.
- Accessing the single memory slot typically requires bottom panel removal, which may involve voiding warranty seals depending on regional service policies.
- Voltage specification must match the soldered memory voltage, as SO-DIMM slots cannot independently regulate power delivery to mixed memory types.