Physical Dimensions & Thickness: The Anbernic RG35XX Plus has a vertical (game boy style) chassis measuring 81 × 117 × 22 mm, while the ASUS ROG Ally X uses a horizontal bar chassis measuring 280.2 × 114 × 36.9 mm. In width, the Anbernic RG35XX Plus is 199.2 mm (71.1%) narrower than the ASUS ROG Ally X. In height, the Anbernic RG35XX Plus is 3 mm (2.6%) taller than the ASUS ROG Ally X. In chassis thickness (depth), the Anbernic RG35XX Plus is 14.9 mm (40.4%) slimmer than the ASUS ROG Ally X (22 mm vs 36.9 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Anbernic RG35XX Plus occupies 9,477 mm² (94.8 cm²), compared to 31,943 mm² (319.4 cm²) for the ASUS ROG Ally X—a footprint difference of 22,466 mm² (70.3%). On the scale, the Anbernic RG35XX Plus weighs 186g versus 678g for the ASUS ROG Ally X, representing a 492g (72.6%) weight difference (Anbernic RG35XX Plus is lighter).
4:3 vs 16:9 Effective Viewable Screen Size: For classic 4:3 retro games (PS1, SNES, N64, Dreamcast), the Anbernic RG35XX Plus's 3.5" (4:3) panel yields a 3.5" effective diagonal (100% full screen without black bars (native 4:3)), while the ASUS ROG Ally X's 7" (16:9) panel yields a 5.72" effective diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)). This gives the ASUS ROG Ally X a 2.22" larger active 4:3 diagonal (167% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the Anbernic RG35XX Plus delivers a 3.21" effective diagonal (75% screen usage) versus 7" (100% screen usage) on the ASUS ROG Ally X, making the ASUS ROG Ally X larger by 3.79" (+374.8% active 16:9 area).
