| Other R4 versions | R4King | |
| Simulator | No support for GB, GBC, MD, FC simulators | Support to GB, GBC,MD, FC and other simulators |
| Power saving | No power saving function, more wastage | With sleeping mode function, to extend standby time |
| Operation interface | Inflexible operation interface | Multi-language setting, simple and easy-operated interface |
| Storage capacity | No SDHC support, storage capacity capped at 2GB. Required a rare Japanese made card | Support to the latest SDHC-128MB and 32GB all level speed micro SDHC memory card |
| Compatibility of the game | The support for R4 version as the team has been dismissed, and no support for the most of the latest games ever after | Several technicians committed to the website maintenance, with the frequent updating, support to all the games for NDS |
| Flexibility | Only the gold fingers and soft function can be used | R4King 3DS can be independently set without affecting each other |
| Multimedia engine | The based-on Moonshell 1.61 software multimedia engine is with more BUG, low video decode speed, and unclear pictures | With the latest Moonshell 2 as the multimedia engine (compatibility of the engine), R4King 3DS is of high quality picture and higher decoding speed |
| Card mould | The adoption of original mould manufacturing makes it of different sizes, poor contact with the DS main neck, which cause halted or start problem | R4King 3DS adopts more accurate mould manufacturing, less than 0.1mm difference with the gold finger contact size and original card, which ensure the stability |
| Internet | No support of web page browsing | R4King 3DS is with web page browser |
| Communication | No support | R4King 3DS is with MSN, SKYPE, and E-MAIL softwares. |
