Physical Dimensions & Thickness: The Anbernic RG35XXSP has a clamshell (foldable) chassis measuring 89 × 158 × 27.3 mm, while the Retroid Pocket 5 uses a horizontal bar chassis measuring 199.2 × 78.5 × 15.6 mm. In width, the Anbernic RG35XXSP is 110.2 mm (55.3%) narrower than the Retroid Pocket 5. In height, the Anbernic RG35XXSP is 79.5 mm (101.3%) taller than the Retroid Pocket 5. In chassis thickness (depth), the Anbernic RG35XXSP is 11.7 mm (75%) thicker than the Retroid Pocket 5 (27.3 mm vs 15.6 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Anbernic RG35XXSP occupies 14,062 mm² (140.6 cm²), compared to 15,637 mm² (156.4 cm²) for the Retroid Pocket 5—a footprint difference of 1,575 mm² (10.1%). On the scale, the Anbernic RG35XXSP weighs 197g versus 280g for the Retroid Pocket 5, representing a 83g (29.6%) weight difference (Anbernic RG35XXSP 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 Retroid Pocket 5'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 5 a 0.99" larger active 4:3 diagonal (64.8% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the Anbernic RG35XXSP delivers a 3.21" effective diagonal (75% screen usage) versus 5.5" (100% screen usage) on the Retroid Pocket 5, making the Retroid Pocket 5 larger by 2.29" (+193.1% active 16:9 area).