Physical Dimensions & Thickness: The Anbernic RG35XX H has a horizontal bar chassis measuring 145 × 69 × 16 mm, while the AYN Odin 3 uses a horizontal bar chassis measuring 224.8 × 87.5 × 16.6 mm. In width, the Anbernic RG35XX H is 79.8 mm (35.5%) narrower than the AYN Odin 3. In height, the Anbernic RG35XX H is 18.5 mm (21.1%) shorter than the AYN Odin 3. In chassis thickness (depth), the Anbernic RG35XX H is 0.6 mm (3.6%) slimmer than the AYN Odin 3 (16 mm vs 16.6 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Anbernic RG35XX H occupies 10,005 mm² (100.1 cm²), compared to 19,670 mm² (196.7 cm²) for the AYN Odin 3—a footprint difference of 9,665 mm² (49.1%). On the scale, the Anbernic RG35XX H weighs 180g versus 390g for the AYN Odin 3, representing a 210g (53.8%) weight difference (Anbernic RG35XX H is lighter).
4:3 vs 16:9 Effective Viewable Screen Size: For classic 4:3 retro games (PS1, SNES, N64, Dreamcast), the Anbernic RG35XX H's 3.5" (4:3) panel yields a 3.5" effective diagonal (100% full screen without black bars (native 4:3)), while 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)). This gives the AYN Odin 3 a 1.4" larger active 4:3 diagonal (96.2% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the Anbernic RG35XX H delivers a 3.21" effective diagonal (75% screen usage) versus 6" (100% screen usage) on the AYN Odin 3, making the AYN Odin 3 larger by 2.79" (+248.8% active 16:9 area).