Physical Dimensions & Thickness: The AYN Odin 2 Mini has a horizontal bar chassis measuring 198 × 85.8 × 19.5 mm, while the Powkiddy RGB30 uses a 1:1 square chassis measuring 145 × 86.5 × 18 mm. In width, the AYN Odin 2 Mini is 53 mm (36.6%) wider than the Powkiddy RGB30. In height, the AYN Odin 2 Mini is 0.7 mm (0.8%) shorter than the Powkiddy RGB30. In chassis thickness (depth), the AYN Odin 2 Mini is 1.5 mm (8.3%) thicker than the Powkiddy RGB30 (19.5 mm vs 18 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the AYN Odin 2 Mini occupies 16,988 mm² (169.9 cm²), compared to 12,543 mm² (125.4 cm²) for the Powkiddy RGB30—a footprint difference of 4,445 mm² (35.4%). On the scale, the AYN Odin 2 Mini weighs 320g versus 207g for the Powkiddy RGB30, representing a 113g (54.6%) weight difference (Powkiddy RGB30 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 RGB30's 4" (1:1) panel yields a 3.54" effective diagonal (75% active screen area with horizontal letterbox bars on top and bottom (native 1:1)). This gives the AYN Odin 2 Mini a 0.55" larger active 4:3 diagonal (33.5% 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 3.25" (56% screen usage) on the Powkiddy RGB30, making the AYN Odin 2 Mini larger by 1.75" (+137.4% active 16:9 area).