Quick Answer
The ROG Ally X (around R16,000 to R19,000 in SA) runs Fallout 4 at a smooth 60fps in most areas at its native 1080p, dropping to the 40s in dense Boston downtown at 25W TDP. Cap to 40fps or play at 720p for the best battery and consistency.
Fallout 4 Performance On The Ally X
Fallout 4 is an older engine that leans on single-thread CPU performance, which suits the Ally X's strong Z1 Extreme chip. At the 25W TDP with medium-high settings and the native 1080p screen, expect a steady 55fps to 60fps across the wasteland, with the well-known downtown Boston dips into the low 40s. At the 15W battery-saver TDP, hold 30fps to 40fps; at the 30W turbo profile, the high settings stay closer to 60fps but battery drains faster.
The smart approach is a 40fps cap with a 40Hz refresh, which keeps frame pacing smooth, extends battery to several hours, and hides the downtown dips.
Modding Fallout 4 On The Ally X
Modding works well on the Ally X because the game runs in Windows. Use a desktop mod manager like Mod Organizer 2 or Vortex, then sync your data folder to the handheld; keep texture mods modest because heavy 4K packs strain the shared memory. A light load order of bug fixes, the unofficial patch, and tasteful texture upgrades runs cleanly without hurting frame rates.
Settings And Storage Tips
Set textures to high, shadows to medium, and godrays to low for the best balance. Fallout 4 with a moderate mod list fits comfortably, but install to a fast microSD or the internal SSD for quick area loads. A 40fps cap is the sweet spot for SA commuters wanting long battery life.
FAQ
What FPS does Fallout 4 hit on the ROG Ally X?
Around 55fps to 60fps in the open wasteland at 25W and 1080p, dropping to the low 40s in downtown Boston. A 40fps cap smooths the experience.
Can I mod Fallout 4 on the ROG Ally X?
Yes. Use Mod Organizer 2 or Vortex on a desktop and sync the data folder; keep texture mods modest so the shared memory is not overloaded.
Which TDP setting is best for Fallout 4 on the Ally X?
25W with a 40fps cap balances smooth play and battery life; 30W adds frames at the cost of runtime, while 15W suits light, long sessions.
4 to 40fps at 40Hz on the Ally X for smooth frame pacing, long battery, and hidden downtown Boston dips.