Physical Dimensions & Thickness: The Anbernic RG35XXSP has a clamshell (foldable) chassis measuring 89 × 158 × 27.3 mm, while the Retroid Pocket 4 Pro uses a horizontal bar chassis measuring 184.8 × 82.6 × 15.8 mm. In width, the Anbernic RG35XXSP is 95.8 mm (51.8%) narrower than the Retroid Pocket 4 Pro. In height, the Anbernic RG35XXSP is 75.4 mm (91.3%) taller than the Retroid Pocket 4 Pro. In chassis thickness (depth), the Anbernic RG35XXSP is 11.5 mm (72.8%) thicker than the Retroid Pocket 4 Pro (27.3 mm vs 15.8 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Anbernic RG35XXSP occupies 14,062 mm² (140.6 cm²), compared to 15,264 mm² (152.6 cm²) for the Retroid Pocket 4 Pro—a footprint difference of 1,202 mm² (7.9%). On the scale, the Anbernic RG35XXSP weighs 197g versus 261g for the Retroid Pocket 4 Pro, representing a 64g (24.5%) 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 4 Pro's 4.7" (16:9) panel yields a 3.84" effective diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)). This gives the Retroid Pocket 4 Pro a 0.34" larger active 4:3 diagonal (20.4% 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 4.7" (100% screen usage) on the Retroid Pocket 4 Pro, making the Retroid Pocket 4 Pro larger by 1.49" (+114.1% active 16:9 area).
