Physical Dimensions & Thickness: The ASUS ROG Ally X has a horizontal bar chassis measuring 280.2 × 114 × 36.9 mm, while the Retroid Pocket 6 uses a horizontal bar chassis measuring 205.5 × 80.5 × 17.2 mm. In width, the ASUS ROG Ally X is 74.7 mm (36.4%) wider than the Retroid Pocket 6. In height, the ASUS ROG Ally X is 33.5 mm (41.6%) taller than the Retroid Pocket 6. In chassis thickness (depth), the ASUS ROG Ally X is 19.7 mm (114.5%) thicker than the Retroid Pocket 6 (36.9 mm vs 17.2 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the ASUS ROG Ally X occupies 31,943 mm² (319.4 cm²), compared to 16,543 mm² (165.4 cm²) for the Retroid Pocket 6—a footprint difference of 15,400 mm² (93.1%). On the scale, the ASUS ROG Ally X weighs 678g versus 200g for the Retroid Pocket 6, representing a 478g (239%) weight difference (Retroid Pocket 6 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 6'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 6, making the ASUS ROG Ally X larger by 1.5" (+62% active 16:9 area).