Physical Dimensions & Thickness: The ASUS ROG Ally X has a horizontal bar chassis measuring 280.2 × 114 × 36.9 mm, while the Retroid Pocket 5 uses a horizontal bar chassis measuring 199.2 × 78.5 × 15.6 mm. In width, the ASUS ROG Ally X is 81 mm (40.7%) wider than the Retroid Pocket 5. In height, the ASUS ROG Ally X is 35.5 mm (45.2%) taller than the Retroid Pocket 5. In chassis thickness (depth), the ASUS ROG Ally X is 21.3 mm (136.5%) thicker than the Retroid Pocket 5 (36.9 mm vs 15.6 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the ASUS ROG Ally X occupies 31,943 mm² (319.4 cm²), compared to 15,637 mm² (156.4 cm²) for the Retroid Pocket 5—a footprint difference of 16,306 mm² (104.3%). On the scale, the ASUS ROG Ally X weighs 678g versus 280g for the Retroid Pocket 5, representing a 398g (142.1%) weight difference (Retroid Pocket 5 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 5's 5.5" (16:9) panel yields a 4.49" effective diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)). This gives the ASUS ROG Ally X a 1.23" larger active 4:3 diagonal (62% 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 5.5" (100% screen usage) on the Retroid Pocket 5, making the ASUS ROG Ally X larger by 1.5" (+62% active 16:9 area).
