Modders Just Gave ROG Xbox Ally X a Wild 64GB RAM Upgrade

The PC modding community keeps pushing hardware far beyond factory limits, and the latest project targets the ROG Xbox Ally X. After vBIOS mods on RTX 5090 cards and revived RTX 5070 Ti boards, modders have now pulled off a 64GB RAM upgrade on ASUS’s Windows gaming handheld.

According to reporting from VideoCardz, the modification requires a complete teardown of the device, including full motherboard removal. The modder flips the board and removes the factory RAM packages hidden beneath the heat spreader tape.

Hardware mod gives ROG Xbox Ally X 64GB RAM

The stock Xbox Ally X configuration uses 6GB Micron LPDDR5X modules rated at 8533 MT/s. The mod replaces them with 16GB SK hynix LPDDR5X packages, pushing total system memory to 64GB.

The memory bus stays unchanged, so the upgrade increases density rather than widening bandwidth. Even so, this change dramatically expands available memory for demanding workloads and experimentation.

After completing the soldering work, the modder moves to firmware modification. Using a CH341A USB programmer, the BIOS gets dumped, edited at the APCB data level, and flashed back onto the system.

The process also requires changing the strap resistors on the board. Without this step, memory training can cause speeds to drop to around 7500 MT/s. With the straps adjusted, the system stabilizes at higher clocks.

Following a longer-than-usual memory training cycle, the device boots into Windows successfully. Windows Task Manager confirms the full 64GB capacity running at 8000 MT/s.

For typical gaming workloads, 64GB of RAM offers little real-world benefit. The ROG Xbox Ally X already ships with 24GB of LPDDR5X memory, and memory-related bottlenecks at that capacity remain rare in modern games.

Still, the project highlights how far handheld PC hardware can stretch in expert hands. This remains an extremely high-risk modification that voids warranties and can permanently destroy the motherboard if anything goes wrong. No one should attempt to replicate this without professional tools and experience.

Separately, reports suggest Smart App Control currently causes issues with Armory Crate on the ROG Xbox Ally line, though a fix may arrive in a future update.