Physical Dimensions & Thickness: The Anbernic RG35XXSP has a clamshell (foldable) chassis measuring 89 × 158 × 27.3 mm, while the Miyoo Mini Plus uses a vertical (game boy style) chassis measuring 78.5 × 108 × 22.3 mm. In width, the Anbernic RG35XXSP is 10.5 mm (13.4%) wider than the Miyoo Mini Plus. In height, the Anbernic RG35XXSP is 50 mm (46.3%) taller than the Miyoo Mini Plus. In chassis thickness (depth), the Anbernic RG35XXSP is 5 mm (22.4%) thicker than the Miyoo Mini Plus (27.3 mm vs 22.3 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Anbernic RG35XXSP occupies 14,062 mm² (140.6 cm²), compared to 8,478 mm² (84.8 cm²) for the Miyoo Mini Plus—a footprint difference of 5,584 mm² (65.9%). On the scale, the Anbernic RG35XXSP weighs 197g versus 162g for the Miyoo Mini Plus, representing a 35g (21.6%) weight difference (Miyoo Mini Plus is lighter).
4:3 vs 16:9 Effective Viewable Screen Size: For classic 4:3 retro games (PS1, SNES, N64, Dreamcast), the Anbernic RG35XXSP's 3.5" (4:3) panel yields a 3.5" effective diagonal (100% full screen without black bars (native 4:3)), while the Miyoo Mini Plus's 3.5" (4:3) panel yields a 3.5" effective diagonal (100% full screen without black bars (native 4:3)). Both devices provide the exact same viewable 4:3 image size. For 16:9 widescreen content (PSP, Switch, streaming), the Anbernic RG35XXSP delivers a 3.21" effective diagonal (75% screen usage) versus 3.21" (75% screen usage) on the Miyoo Mini Plus.