Physical Dimensions & Thickness: The AYN Odin 3 has a horizontal bar chassis measuring 224.8 × 87.5 × 16.6 mm, while the Retroid Pocket 5 uses a horizontal bar chassis measuring 199.2 × 78.5 × 15.6 mm. In width, the AYN Odin 3 is 25.6 mm (12.9%) wider than the Retroid Pocket 5. In height, the AYN Odin 3 is 9 mm (11.5%) taller than the Retroid Pocket 5. In chassis thickness (depth), the AYN Odin 3 is 1 mm (6.4%) thicker than the Retroid Pocket 5 (16.6 mm vs 15.6 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the AYN Odin 3 occupies 19,670 mm² (196.7 cm²), compared to 15,637 mm² (156.4 cm²) for the Retroid Pocket 5—a footprint difference of 4,033 mm² (25.8%). On the scale, the AYN Odin 3 weighs 390g versus 280g for the Retroid Pocket 5, representing a 110g (39.3%) 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 AYN Odin 3's 6" (16:9) panel yields a 4.9" 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 AYN Odin 3 a 0.41" larger active 4:3 diagonal (19% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the AYN Odin 3 delivers a 6" effective diagonal (100% screen usage) versus 5.5" (100% screen usage) on the Retroid Pocket 5, making the AYN Odin 3 larger by 0.5" (+19% active 16:9 area).