Physical Dimensions & Thickness: The AYN Odin 2 Mini has a horizontal bar chassis measuring 198 × 85.8 × 19.5 mm, while the Powkiddy RGB20S uses a vertical (game boy style) chassis measuring 83 × 120 × 20.8 mm. In width, the AYN Odin 2 Mini is 115 mm (138.6%) wider than the Powkiddy RGB20S. In height, the AYN Odin 2 Mini is 34.2 mm (28.5%) shorter than the Powkiddy RGB20S. In chassis thickness (depth), the AYN Odin 2 Mini is 1.3 mm (6.3%) slimmer than the Powkiddy RGB20S (19.5 mm vs 20.8 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the AYN Odin 2 Mini occupies 16,988 mm² (169.9 cm²), compared to 9,960 mm² (99.6 cm²) for the Powkiddy RGB20S—a footprint difference of 7,028 mm² (70.6%). On the scale, the AYN Odin 2 Mini weighs 320g versus 200g for the Powkiddy RGB20S, representing a 120g (60%) weight difference (Powkiddy RGB20S 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 Mini's 5" (16:9) panel yields a 4.09" effective diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)), while the Powkiddy RGB20S's 3.5" (4:3) panel yields a 3.5" effective diagonal (100% full screen without black bars (native 4:3)). This gives the AYN Odin 2 Mini a 0.59" larger active 4:3 diagonal (36.2% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the AYN Odin 2 Mini delivers a 5" effective diagonal (100% screen usage) versus 3.21" (75% screen usage) on the Powkiddy RGB20S, making the AYN Odin 2 Mini larger by 1.79" (+142.2% active 16:9 area).