Compare ASUS ROG Ally X (280.2×114×36.9 mm, 7" 16:9) vs Powkiddy X55 (212.5×94.5×19 mm, 5.5" 16:9) 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 X55
Panel 16:9 with native resolution 1280x720.
Physical Dimensions & Thickness: The ASUS ROG Ally X has a horizontal bar chassis measuring 280.2 × 114 × 36.9 mm, while the Powkiddy X55 uses a horizontal bar chassis measuring 212.5 × 94.5 × 19 mm. In width, the ASUS ROG Ally X is 67.7 mm (31.9%) wider than the Powkiddy X55. In height, the ASUS ROG Ally X is 19.5 mm (20.6%) taller than the Powkiddy X55. In chassis thickness (depth), the ASUS ROG Ally X is 17.9 mm (94.2%) thicker than the Powkiddy X55 (36.9 mm vs 19 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the ASUS ROG Ally X occupies 31,943 mm² (319.4 cm²), compared to 20,081 mm² (200.8 cm²) for the Powkiddy X55—a footprint difference of 11,862 mm² (59.1%). On the scale, the ASUS ROG Ally X weighs 678g versus 293g for the Powkiddy X55, representing a 385g (131.4%) weight difference (Powkiddy X55 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 X55'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 ASUS ROG Ally X a 1.23" larger active 4:3 diagonal (62% 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 5.5" (100% screen usage) on the Powkiddy X55, making the ASUS ROG Ally X larger by 1.5" (+62% active 16:9 area).
| Specification | ASUS ROG Ally X | Powkiddy X55 | Difference / Comparison |
|---|---|---|---|
| Dimensions (W × H × D) | 280.2 × 114 × 36.9 mm | 212.5 × 94.5 × 19 mm | Powkiddy X55 is 67.6% smaller by volume |
| Width | 280.2 mm | 212.5 mm | 67.7 mm (31.9% vs X55) |
| Height | 114 mm | 94.5 mm | 19.5 mm (20.6% vs X55) |
| Thickness (Depth) | 36.9 mm | 19 mm | 17.9 mm (94.2% vs X55) |
| Footprint Area (W × H) | 31,943 mm² (319.4 cm²) | 20,081 mm² (200.8 cm²) | 11,862 mm² (59.1% diff) |
| Chassis Volume | 1178.7 cm³ | 381.5 cm³ | 797.2 cm³ (209% diff) |
| Weight | 678 g | 293 g | 385 g (131.4% diff) |
| Form Factor | Horizontal Bar | Horizontal Bar | Both Horizontal Bar |
| Native Screen Diagonal | 7" | 5.5" | 1.5" (27.3% larger on ROG Ally X) |
| Native Aspect Ratio | 16:9 | 16:9 | Identical 16:9 ratio |
| Display Technology | IPS | IPS | Both IPS |
| Native Resolution & Density | 1920x1080 (315 PPI) | 1280x720 (267 PPI) | 48 PPI sharper on ROG Ally X |
| Effective 4:3 Screen Size (PS1, SNES, N64) | 5.72" (75% area, pillarbox) | 4.49" (75% area, pillarbox) | +1.23" (+62% area) on ROG Ally X |
| Effective 16:9 Screen Size (PSP, Streaming) | 7" (100% native, no bars) | 5.5" (100% native, no bars) | +1.5" (+62% area) on ROG Ally X |
| Effective 3:2 Screen Size (Game Boy Advance) | 6.19" (84% area, pillarbox) | 4.86" (84% area, pillarbox) | +1.33" (+62% area) on ROG Ally X |
| Processor (SoC / CPU) | AMD Ryzen Z1 Extreme | RockChip RK3566 | Different architecture |
| Memory (RAM) | 24 GB LPDDR5X (7500 MT/s) | 2 GB LPDDR4X | 24 GB LPDDR5X (7500 MT/s) vs 2 GB LPDDR4X |
| Battery Capacity | 10,390 mAh | 4,000 mAh | 6,390 mAh larger on ROG Ally X |
| Operating System | Windows 11 | Linux (JELOS) | Windows 11 vs Linux (JELOS) |
The ASUS ROG Ally X measures 280.2 × 114 × 36.9 mm (footprint: 31,943 mm² / 319.4 cm²), whereas the Powkiddy X55 measures 212.5 × 94.5 × 19 mm (footprint: 20,081 mm² / 200.8 cm²). Compared to the Powkiddy X55, the ASUS ROG Ally X is 67.7 mm (31.9%) wider, 19.5 mm (20.6%) taller, 17.9 mm (94.2%) thicker, and 11,862 mm² (59.1%) larger in footprint area. In weight, the ASUS ROG Ally X is 385g (131.4%) heavier (678g vs 293g).
The ASUS ROG Ally X delivers a larger active 4:3 image by 1.23" diagonal (62% more active display area) than the Powkiddy X55. 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 X55 has a 5.5" 16:9 IPS screen (1280x720) that yields a 4.49" effective 4:3 diagonal (75% active screen area with vertical pillarbox bars on the sides (native 16:9)).
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 5.5" on the Powkiddy X55 (+1.5", or 62% 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 X55 operates at 100% full screen without black bars (native 16:9).
No, the Powkiddy X55 is more compact and pocketable than the ASUS ROG Ally X, with a smaller overall chassis volume (381.5 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 X55 uses a horizontal bar form factor (212.5 mm wide × 19 mm thick, 293g). Overall, the Powkiddy X55 is easier to carry in a pocket due to its slimmer 19 mm profile and smaller physical footprint.
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