Compare ASUS ROG Ally X (280.2×114×36.9 mm, 7" 16:9) vs Powkiddy RGB20S (83×120×20.8 mm, 3.5" 4:3) side-by-side at true 1:1 millimeter scale.
Silhouettes and screens to true relative scale (mm). Inner rectangle represents the physical screen.
ASUS ROG Ally X
Panel 16:9 with native resolution 1920x1080.
Powkiddy RGB20S
Panel 4:3 with native resolution 640x480.
Physical Dimensions & Thickness: The ASUS ROG Ally X has a horizontal bar chassis measuring 280.2 × 114 × 36.9 mm, while the Powkiddy RGB20S uses a vertical (game boy style) chassis measuring 83 × 120 × 20.8 mm. In width, the ASUS ROG Ally X is 197.2 mm (237.6%) wider than the Powkiddy RGB20S. In height, the ASUS ROG Ally X is 6 mm (5%) shorter than the Powkiddy RGB20S. In chassis thickness (depth), the ASUS ROG Ally X is 16.1 mm (77.4%) thicker than the Powkiddy RGB20S (36.9 mm vs 20.8 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the ASUS ROG Ally X occupies 31,943 mm² (319.4 cm²), compared to 9,960 mm² (99.6 cm²) for the Powkiddy RGB20S—a footprint difference of 21,983 mm² (220.7%). On the scale, the ASUS ROG Ally X weighs 678g versus 200g for the Powkiddy RGB20S, representing a 478g (239%) weight difference (Powkiddy RGB20S is lighter).
4:3 vs 16:9 Effective Viewable Screen Size: For classic 4:3 retro games (PS1, SNES, N64, Dreamcast), 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)), while the Powkiddy RGB20S's 3.5" (4:3) panel yields a 3.5" effective diagonal (100% full screen without black bars (native 4:3)). 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 ASUS ROG Ally X delivers a 7" effective diagonal (100% screen usage) versus 3.21" (75% screen usage) on the Powkiddy RGB20S, making the ASUS ROG Ally X larger by 3.79" (+374.8% active 16:9 area).
| Specification | ASUS ROG Ally X | Powkiddy RGB20S | Difference / Comparison |
|---|---|---|---|
| Dimensions (W × H × D) | 280.2 × 114 × 36.9 mm | 83 × 120 × 20.8 mm | Powkiddy RGB20S is 82.4% smaller by volume |
| Width | 280.2 mm | 83 mm | 197.2 mm (237.6% vs RGB20S) |
| Height | 114 mm | 120 mm | 6 mm (5% vs RGB20S) |
| Thickness (Depth) | 36.9 mm | 20.8 mm | 16.1 mm (77.4% vs RGB20S) |
| Footprint Area (W × H) | 31,943 mm² (319.4 cm²) | 9,960 mm² (99.6 cm²) | 21,983 mm² (220.7% diff) |
| Chassis Volume | 1178.7 cm³ | 207.2 cm³ | 971.5 cm³ (468.9% diff) |
| Weight | 678 g | 200 g | 478 g (239% diff) |
| Form Factor | Horizontal Bar | Vertical (Game Boy style) | Horizontal Bar vs Vertical (Game Boy style) |
| Native Screen Diagonal | 7" | 3.5" | 3.5" (100% larger on ROG Ally X) |
| Native Aspect Ratio | 16:9 | 4:3 | 16:9 vs 4:3 |
| Display Technology | IPS | IPS | Both IPS |
| Native Resolution & Density | 1920x1080 (315 PPI) | 640x480 (229 PPI) | 86 PPI sharper on ROG Ally X |
| Effective 4:3 Screen Size (PS1, SNES, N64) | 5.72" (75% area, pillarbox) | 3.5" (100% native, no bars) | +2.22" (+167% area) on ROG Ally X |
| Effective 16:9 Screen Size (PSP, Streaming) | 7" (100% native, no bars) | 3.21" (75% area, letterbox) | +3.79" (+374.8% area) on ROG Ally X |
| Effective 3:2 Screen Size (Game Boy Advance) | 6.19" (84% area, pillarbox) | 3.37" (89% area, letterbox) | +2.82" (+238% area) on ROG Ally X |
| Processor (SoC / CPU) | AMD Ryzen Z1 Extreme | RockChip RK3326 | Different architecture |
| Memory (RAM) | 24 GB LPDDR5X (7500 MT/s) | 1 GB DDR3 | 24 GB LPDDR5X (7500 MT/s) vs 1 GB DDR3 |
| Battery Capacity | 10,390 mAh | 3,500 mAh | 6,890 mAh larger on ROG Ally X |
| Operating System | Windows 11 | Linux 351ELEC, AmberELEC, ArkOS | Windows 11 vs Linux 351ELEC, AmberELEC, ArkOS |
The ASUS ROG Ally X measures 280.2 × 114 × 36.9 mm (footprint: 31,943 mm² / 319.4 cm²), whereas the Powkiddy RGB20S measures 83 × 120 × 20.8 mm (footprint: 9,960 mm² / 99.6 cm²). Compared to the Powkiddy RGB20S, the ASUS ROG Ally X is 197.2 mm (237.6%) wider, 6 mm (5%) shorter, 16.1 mm (77.4%) thicker, and 21,983 mm² (220.7%) larger in footprint area. In weight, the ASUS ROG Ally X is 478g (239%) heavier (678g vs 200g).
The ASUS ROG Ally X delivers a larger active 4:3 image by 2.22" diagonal (167% more active display area) than the Powkiddy RGB20S. Specifically, the ASUS ROG Ally X has a 7" 16:9 IPS screen (1920x1080) that yields a 5.72" effective 4:3 diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)). The Powkiddy RGB20S has a 3.5" 4:3 IPS screen (640x480) that yields a 3.5" effective 4:3 diagonal (100% full screen without black bars (native 4:3)).
For 16:9 widescreen gaming (PSP, Switch, and game streaming), the ASUS ROG Ally X provides a larger viewable image at 7" effective diagonal compared to 3.21" on the Powkiddy RGB20S (+3.79", or 374.8% more active widescreen area). On 16:9 content, the ASUS ROG Ally X operates at 100% full screen without black bars (native 16:9), while the Powkiddy RGB20S operates at 75% active screen area with horizontal letterbox bars on top and bottom (native 4:3).
No, the Powkiddy RGB20S is more compact and pocketable than the ASUS ROG Ally X, with a smaller overall chassis volume (207.2 cm³ vs 1178.7 cm³). The ASUS ROG Ally X uses a horizontal bar form factor (280.2 mm wide × 36.9 mm thick, 678g), whereas the Powkiddy RGB20S uses a vertical (game boy style) form factor (83 mm wide × 20.8 mm thick, 200g). Overall, the Powkiddy RGB20S is easier to carry in a pocket due to its slimmer 20.8 mm profile and smaller physical footprint.
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