Compare Anbernic RG405M (162×73.6×15.8 mm, 4" 4:3) vs ASUS ROG Ally (280×113×39 mm, 7" 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.
Anbernic RG405M
Panel 4:3 with native resolution 640x480.
ASUS ROG Ally
Panel 16:9 with native resolution 1920x1080.
Physical Dimensions & Thickness: The Anbernic RG405M has a horizontal bar chassis measuring 162 × 73.6 × 15.8 mm, while the ASUS ROG Ally uses a horizontal bar chassis measuring 280 × 113 × 39 mm. In width, the Anbernic RG405M is 118 mm (42.1%) narrower than the ASUS ROG Ally. In height, the Anbernic RG405M is 39.4 mm (34.9%) shorter than the ASUS ROG Ally. In chassis thickness (depth), the Anbernic RG405M is 23.2 mm (59.5%) slimmer than the ASUS ROG Ally (15.8 mm vs 39 mm).
Footprint Area & Weight: Calculating surface footprint (width × height), the Anbernic RG405M occupies 11,923 mm² (119.2 cm²), compared to 31,640 mm² (316.4 cm²) for the ASUS ROG Ally—a footprint difference of 19,717 mm² (62.3%). On the scale, the Anbernic RG405M weighs 265g versus 608g for the ASUS ROG Ally, representing a 343g (56.4%) weight difference (Anbernic RG405M is lighter).
4:3 vs 16:9 Effective Viewable Screen Size: For classic 4:3 retro games (PS1, SNES, N64, Dreamcast), the Anbernic RG405M's 4" (4:3) panel yields a 4" effective diagonal (100% full screen without black bars (native 4:3)), while the ASUS ROG Ally'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 a 1.72" larger active 4:3 diagonal (104.5% more active display area). For 16:9 widescreen content (PSP, Switch, streaming), the Anbernic RG405M delivers a 3.67" effective diagonal (75% screen usage) versus 7" (100% screen usage) on the ASUS ROG Ally, making the ASUS ROG Ally larger by 3.33" (+263.5% active 16:9 area).
| Specification | Anbernic RG405M | ASUS ROG Ally | Difference / Comparison |
|---|---|---|---|
| Dimensions (W × H × D) | 162 × 73.6 × 15.8 mm | 280 × 113 × 39 mm | Anbernic RG405M is 84.7% smaller by volume |
| Width | 162 mm | 280 mm | 118 mm (42.1% vs ROG Ally) |
| Height | 73.6 mm | 113 mm | 39.4 mm (34.9% vs ROG Ally) |
| Thickness (Depth) | 15.8 mm | 39 mm | 23.2 mm (59.5% vs ROG Ally) |
| Footprint Area (W × H) | 11,923 mm² (119.2 cm²) | 31,640 mm² (316.4 cm²) | 19,717 mm² (62.3% diff) |
| Chassis Volume | 188.4 cm³ | 1234 cm³ | 1045.6 cm³ (84.7% diff) |
| Weight | 265 g | 608 g | 343 g (56.4% diff) |
| Form Factor | Horizontal Bar | Horizontal Bar | Both Horizontal Bar |
| Native Screen Diagonal | 4" | 7" | 3" (75% larger on ROG Ally) |
| Native Aspect Ratio | 4:3 | 16:9 | 4:3 vs 16:9 |
| Display Technology | IPS | IPS | Both IPS |
| Native Resolution & Density | 640x480 (200 PPI) | 1920x1080 (315 PPI) | 115 PPI sharper on ROG Ally |
| Effective 4:3 Screen Size (PS1, SNES, N64) | 4" (100% native, no bars) | 5.72" (75% area, pillarbox) | +1.72" (+104.5% area) on ROG Ally |
| Effective 16:9 Screen Size (PSP, Streaming) | 3.67" (75% area, letterbox) | 7" (100% native, no bars) | +3.33" (+263.5% area) on ROG Ally |
| Effective 3:2 Screen Size (Game Boy Advance) | 3.85" (89% area, letterbox) | 6.19" (84% area, pillarbox) | +2.34" (+158.8% area) on ROG Ally |
| Processor (SoC / CPU) | UNISOC Tiger T618 | AMD Ryzen Z1 / AMD Ryzen Z1 Extreme | Different architecture |
| Memory (RAM) | 4 GB LPDDR4X (3732 MT/s) | 16 GB LPDDR5 (6400 MT/s) | 4 GB LPDDR4X (3732 MT/s) vs 16 GB LPDDR5 (6400 MT/s) |
| Battery Capacity | 4,500 mAh | 5,195 mAh | 695 mAh larger on ROG Ally |
| Operating System | Android 12, GarlicOS, GammaOS | Windows 11 | Android 12, GarlicOS, GammaOS vs Windows 11 |
The Anbernic RG405M measures 162 × 73.6 × 15.8 mm (footprint: 11,923 mm² / 119.2 cm²), whereas the ASUS ROG Ally measures 280 × 113 × 39 mm (footprint: 31,640 mm² / 316.4 cm²). Compared to the ASUS ROG Ally, the Anbernic RG405M is 118 mm (42.1%) narrower, 39.4 mm (34.9%) shorter, 23.2 mm (59.5%) slimmer, and 19,717 mm² (62.3%) smaller in footprint area. In weight, the Anbernic RG405M is 343g (56.4%) lighter (265g vs 608g).
The ASUS ROG Ally delivers a larger active 4:3 image by 1.72" diagonal (104.5% more active display area) than the Anbernic RG405M. Specifically, the Anbernic RG405M has a 4" 4:3 IPS screen (640x480) that yields a 4" effective 4:3 diagonal (100% full screen without black bars (native 4:3)). The ASUS ROG Ally 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)).
For 16:9 widescreen gaming (PSP, Switch, and game streaming), the ASUS ROG Ally provides a larger viewable image at 7" effective diagonal compared to 3.67" on the Anbernic RG405M (+3.33", or 263.5% more active widescreen area). On 16:9 content, the Anbernic RG405M operates at 75% active screen area with horizontal letterbox bars on top and bottom (native 4:3), while the ASUS ROG Ally operates at 100% full screen without black bars (native 16:9).
Yes, the Anbernic RG405M is more compact and pocketable than the ASUS ROG Ally, with a smaller overall chassis volume (188.4 cm³ vs 1234 cm³). The Anbernic RG405M uses a horizontal bar form factor (162 mm wide × 15.8 mm thick, 265g), whereas the ASUS ROG Ally uses a horizontal bar form factor (280 mm wide × 39 mm thick, 608g). Overall, the Anbernic RG405M is easier to carry in a pocket due to its slimmer 15.8 mm profile and smaller physical footprint.
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