Physical Dimensions & Thickness: The AYN Odin 2 has a horizontal bar chassis measuring 225 × 98 × 17 mm, while the Retroid Pocket 3 Plus uses a horizontal bar chassis measuring 184.65 × 81.38 × 24.23 mm. In width, the AYN Odin 2 is 40.35 mm (21.9%) wider than the Retroid Pocket 3 Plus. In height, the AYN Odin 2 is 16.62 mm (20.4%) taller than the Retroid Pocket 3 Plus. In chassis thickness (depth), the AYN Odin 2 is 7.23 mm (29.8%) slimmer than the Retroid Pocket 3 Plus (17 mm vs 24.23 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the AYN Odin 2 occupies 22,050 mm² (220.5 cm²), compared to 15,027 mm² (150.3 cm²) for the Retroid Pocket 3 Plus—a footprint difference of 7,023 mm² (46.7%). On the scale, the AYN Odin 2 weighs 420g versus 230g for the Retroid Pocket 3 Plus, representing a 190g (82.6%) weight difference (Retroid Pocket 3 Plus is lighter).
4:3 vs 16:9 Effective Viewable Screen Size: For classic 4:3 retro games (PS1, SNES, N64, Dreamcast), the AYN Odin 2'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 3 Plus's 4.7" (16:9) panel yields a 3.84" effective diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)). This gives the AYN Odin 2 a 1.06" larger active 4:3 diagonal (63% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the AYN Odin 2 delivers a 6" effective diagonal (100% screen usage) versus 4.7" (100% screen usage) on the Retroid Pocket 3 Plus, making the AYN Odin 2 larger by 1.3" (+63% active 16:9 area).