Physical Dimensions & Thickness: The Anbernic RG Cube has a 1:1 square chassis measuring 153 × 86.3 × 18 mm, while the Miyoo Mini Plus uses a vertical (game boy style) chassis measuring 78.5 × 108 × 22.3 mm. In width, the Anbernic RG Cube is 74.5 mm (94.9%) wider than the Miyoo Mini Plus. In height, the Anbernic RG Cube is 21.7 mm (20.1%) shorter than the Miyoo Mini Plus. In chassis thickness (depth), the Anbernic RG Cube is 4.3 mm (19.3%) slimmer than the Miyoo Mini Plus (18 mm vs 22.3 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Anbernic RG Cube occupies 13,204 mm² (132 cm²), compared to 8,478 mm² (84.8 cm²) for the Miyoo Mini Plus—a footprint difference of 4,726 mm² (55.7%). On the scale, the Anbernic RG Cube weighs 256g versus 162g for the Miyoo Mini Plus, representing a 94g (58%) 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 RG Cube's 3.95" (1:1) panel yields a 3.49" effective diagonal (75% active screen area with horizontal letterbox bars on top and bottom (native 1:1)), 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)). This gives the Miyoo Mini Plus a 0.01" larger active 4:3 diagonal (0.5% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the Anbernic RG Cube delivers a 3.2" effective diagonal (56% screen usage) versus 3.21" (75% screen usage) on the Miyoo Mini Plus, making the Miyoo Mini Plus larger by 0.01" (+0.5% active 16:9 area).