Physical Dimensions & Thickness: The ASUS ROG Ally X has a horizontal bar chassis measuring 280.2 × 114 × 36.9 mm, while the Retroid Pocket Mini uses a horizontal bar chassis measuring 165.28 × 77.62 × 16.5 mm. In width, the ASUS ROG Ally X is 114.92 mm (69.5%) wider than the Retroid Pocket Mini. In height, the ASUS ROG Ally X is 36.38 mm (46.9%) taller than the Retroid Pocket Mini. In chassis thickness (depth), the ASUS ROG Ally X is 20.4 mm (123.6%) thicker than the Retroid Pocket Mini (36.9 mm vs 16.5 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the ASUS ROG Ally X occupies 31,943 mm² (319.4 cm²), compared to 12,829 mm² (128.3 cm²) for the Retroid Pocket Mini—a footprint difference of 19,114 mm² (149%). On the scale, the ASUS ROG Ally X weighs 678g versus 215g for the Retroid Pocket Mini, representing a 463g (215.3%) weight difference (Retroid Pocket Mini is lighter).
4:3 vs 16:9 Effective Viewable Screen Size: For classic 4:3 retro games (PS1, SNES, N64, Dreamcast), the ASUS ROG Ally X's 7" (16:9) panel yields a 5.72" effective diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)), while the Retroid Pocket Mini's 3.7" (4:3) panel yields a 3.7" effective diagonal (100% full screen without black bars (native 4:3)). This gives the ASUS ROG Ally X a 2.02" larger active 4:3 diagonal (139% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the ASUS ROG Ally X delivers a 7" effective diagonal (100% screen usage) versus 3.4" (75% screen usage) on the Retroid Pocket Mini, making the ASUS ROG Ally X larger by 3.6" (+324.8% active 16:9 area).
