Hearts of Iron IV on ROG Ally X

Steam Deck Playable · faster GPUValve's ratingEstimate · medium confidence, ±20%

Yes. Valve rates Hearts of Iron IV Steam Deck Playable, and the ROG Ally X has a faster GPU than the Steam Deck OLED. At its native 1920×1080 we estimate ~91 fps on the ultra preset (range 73–109, medium confidence, ±20%). 60 fps is reachable on the ultra preset. Model estimate, not measured; data updated 2026-09-24.

Estimated FPS at native 1920×1080

Preset	Native 1920×1080	Range	Rendered at 1280×800
low	194	155–233	253
medium	148	118–178	229
high	114	91–137	177
ultra	91	73–109	141

Estimate · medium confidence, ±20%

Estimated FPS from our model (v0), based on the game's published requirements and relative GPU/CPU performance. Not measured. Real results vary with drivers, patches, and scenes. Values above 300 fps show as 300+. Data updated 2026-09-24.

Presets for 30 / 40 / 60 fps

30 fps at 1920×1080: ultra preset
40 fps at 1920×1080: ultra preset
60 fps at 1920×1080: ultra preset
40 fps rendered at 1280×800: ultra preset
60 fps rendered at 1280×800: ultra preset

AMD graphics: use FSR in quality or balanced mode (or the system-level RSR upscaler) before dropping the preset. DLSS is not available on AMD.

Frame cap and power

Screen: 1920×1080, 120 Hz, 80 Wh battery.
Even frame caps for 120 Hz: 30, 40, 60, 120 fps. At ultra (low end of the range 73 fps), a 60 fps cap should hold steady.
TDP: not measured yet. We don't publish wattage advice until we have measured runs.

Steam Deck rating

Valve rates Hearts of Iron IV Steam Deck Playable (tested on Steam Deck, not on the ROG Ally X).

Hearts of Iron IV on other handhelds (ultra preset, native resolution)

Handheld	Screen	FPS at native	FPS at 1280×800	Verdict
MSI Claw 8 EX AI+	1920×1200	135	223	Steam Deck Playable · faster GPU
ROG Xbox Ally X	1920×1080	106	164	Steam Deck Playable · faster GPU
ROG Xbox Ally X20	1920×1080	106	164	Steam Deck Playable · faster GPU
Legion Go 2	1920×1200	95	156	Steam Deck Playable · faster GPU
MSI Claw 8 AI+	1920×1200	95	156	Steam Deck Playable · faster GPU
MSI Claw A8	1920×1200	95	156	Steam Deck Playable · faster GPU
MSI Claw 7 AI+	1920×1080	96	149	Steam Deck Playable · faster GPU
ROG Ally X	1920×1080	91	141	Steam Deck Playable · faster GPU
Legion Go	2560×1600	54	127	Steam Deck Playable · faster GPU
ROG Ally (Ryzen Z1 Extreme)	1920×1080	82	127	Steam Deck Playable · faster GPU
Legion Go S (Ryzen Z1 Extreme)	1920×1200	77	127	Steam Deck Playable · faster GPU
Legion Go 2 (Ryzen Z2)	1920×1200	77	127	Steam Deck Playable · faster GPU
Steam Deck OLED	1280×800	112	112	Steam Deck Playable
Steam Deck LCD	1280×800	104	104	Steam Deck Playable
ROG Xbox Ally	1920×1080	62	96	Meets recommended
Legion Go S	1920×1200	58	96	Meets recommended
MSI Claw A1M	1920×1080	62	96	Meets recommended
ROG Ally (Ryzen Z1)	1920×1080	48	74	Meets recommended

Native = each device's own screen resolution; 1280×800 compares GPUs at the same render resolution. A faster handheld is the upgrade path here; desktop cards don't apply.