Physical Dimensions & Thickness: The Miyoo Mini Plus has a vertical (game boy style) chassis measuring 78.5 × 108 × 22.3 mm, while the Retroid Pocket 6 uses a horizontal bar chassis measuring 205.5 × 80.5 × 17.2 mm. In width, the Miyoo Mini Plus is 127 mm (61.8%) narrower than the Retroid Pocket 6. In height, the Miyoo Mini Plus is 27.5 mm (34.2%) taller than the Retroid Pocket 6. In chassis thickness (depth), the Miyoo Mini Plus is 5.1 mm (29.7%) thicker than the Retroid Pocket 6 (22.3 mm vs 17.2 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Miyoo Mini Plus occupies 8,478 mm² (84.8 cm²), compared to 16,543 mm² (165.4 cm²) for the Retroid Pocket 6—a footprint difference of 8,065 mm² (48.8%). On the scale, the Miyoo Mini Plus weighs 162g versus 200g for the Retroid Pocket 6, representing a 38g (19%) 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 Miyoo Mini Plus's 3.5" (4:3) panel yields a 3.5" effective diagonal (100% full screen without black bars (native 4:3)), while the Retroid Pocket 6's 5.5" (16:9) panel yields a 4.49" effective diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)). This gives the Retroid Pocket 6 a 0.99" larger active 4:3 diagonal (64.8% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the Miyoo Mini Plus delivers a 3.21" effective diagonal (75% screen usage) versus 5.5" (100% screen usage) on the Retroid Pocket 6, making the Retroid Pocket 6 larger by 2.29" (+193.1% active 16:9 area).