Compare ASUS ROG Ally X (280.2×114×36.9 mm, 7" 16:9) vs Powkiddy V90 (82×145.2×26.5 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 V90
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 V90 uses a clamshell (foldable) chassis measuring 82 × 145.2 × 26.5 mm. In width, the ASUS ROG Ally X is 198.2 mm (241.7%) wider than the Powkiddy V90. In height, the ASUS ROG Ally X is 31.2 mm (21.5%) shorter than the Powkiddy V90. In chassis thickness (depth), the ASUS ROG Ally X is 10.4 mm (39.2%) thicker than the Powkiddy V90 (36.9 mm vs 26.5 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the ASUS ROG Ally X occupies 31,943 mm² (319.4 cm²), compared to 11,906 mm² (119.1 cm²) for the Powkiddy V90—a footprint difference of 20,037 mm² (168.3%). On the scale, the ASUS ROG Ally X weighs 678g versus 200g for the Powkiddy V90, representing a 478g (239%) weight difference (Powkiddy V90 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 V90'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 V90, making the ASUS ROG Ally X larger by 3.79" (+374.8% active 16:9 area).
| Specification | ASUS ROG Ally X | Powkiddy V90 | Difference / Comparison |
|---|---|---|---|
| Dimensions (W × H × D) | 280.2 × 114 × 36.9 mm | 82 × 145.2 × 26.5 mm | Powkiddy V90 is 73.2% smaller by volume |
| Width | 280.2 mm | 82 mm | 198.2 mm (241.7% vs V90) |
| Height | 114 mm | 145.2 mm | 31.2 mm (21.5% vs V90) |
| Thickness (Depth) | 36.9 mm | 26.5 mm | 10.4 mm (39.2% vs V90) |
| Footprint Area (W × H) | 31,943 mm² (319.4 cm²) | 11,906 mm² (119.1 cm²) | 20,037 mm² (168.3% diff) |
| Chassis Volume | 1178.7 cm³ | 315.5 cm³ | 863.2 cm³ (273.6% diff) |
| Weight | 678 g | 200 g | 478 g (239% diff) |
| Form Factor | Horizontal Bar | Clamshell (Foldable) | Horizontal Bar vs Clamshell (Foldable) |
| 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 | Allwinner A133 Plus | 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 | 3,000 mAh | 7,390 mAh larger on ROG Ally X |
| Operating System | Windows 11 | Linux | Windows 11 vs Linux |
The ASUS ROG Ally X measures 280.2 × 114 × 36.9 mm (footprint: 31,943 mm² / 319.4 cm²), whereas the Powkiddy V90 measures 82 × 145.2 × 26.5 mm (footprint: 11,906 mm² / 119.1 cm²). Compared to the Powkiddy V90, the ASUS ROG Ally X is 198.2 mm (241.7%) wider, 31.2 mm (21.5%) shorter, 10.4 mm (39.2%) thicker, and 20,037 mm² (168.3%) 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 V90. 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 V90 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 V90 (+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 V90 operates at 75% active screen area with horizontal letterbox bars on top and bottom (native 4:3).
No, the Powkiddy V90 is more compact and pocketable than the ASUS ROG Ally X, with a smaller overall chassis volume (315.5 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 V90 uses a clamshell (foldable) form factor (82 mm wide × 26.5 mm thick, 200g). Overall, the Powkiddy V90 is easier to carry in a pocket due to its slimmer 26.5 mm profile and smaller physical footprint.
Explore how these handhelds compare against other popular emulation models.
