The main difference between the RG-351MP and the RG-503 is power.
The RG-503 plays everything up to Dreamcast well, while the RG-351MP tops out at DS.
Other differences
- The RG-351MP measures 145 x 73 x 18 mm and weighs 271 g; the RG-503 measures 190 x 84 x 21 mm and weighs 236 g.
- The RG-351MP has a 4:3 screen and the RG-503 a 16:9 one, so different systems fill each.
- The RG-503 has an OLED screen with true blacks; the RG-351MP uses an IPS panel.
- The RG-503 has a 4.95 inch screen against 3.5 inches on the RG-351MP.
Which is better
Which fits in a pocket better?
RG-351MPThe RG-351MP (145 x 73 x 18 mm, 271 g). The RG-503 is 190 x 84 x 21 mm, 236 g. Only the RG-351MP fits a jeans pocket.
Which is better for PS2 games, the RG-351MP or the RG-503?
NeitherNeither is built for PS2. They score 0 and 10 out of 100.
Which costs less?
TieThey launched at about the same price: $147 and $140.
Which is better for GBA games?
RG-503The RG-503. GBA games fill 66% of the RG-503's screen at 3x with even pixels, against 50% of the RG-351MP's screen at 2x.
Which has the bigger battery?
TieAbout the same: 3,500 and 3,500 mAh.
Side by side
| RG-351MP | RG-503 | |
|---|---|---|
| Launch price | $147 | $140 |
| Released | Sep 2021 | Apr 2022 |
| Plays well up to | DS | Dreamcast |
| Shape | Horizontal | Horizontal |
| Software | Linux | Linux |
| Chip | RockChip RK3326 | RockChip RK3566 |
| Memory | 1 GB | 1 GB |
| Screen | 3.5 inch IPS 4:3 | 4.95 inch OLED 16:9 |
| Resolution | 640 x 480 | 960 × 544 |
| Battery | 3,500 mAh | 3,500 mAh |
| Weight | 271 g | 236 g |
| Size | 145 x 73 x 18 mm | 190 x 84 x 21 mm |
| Analog sticks | Double, symmetrical | Double, symmetrical |
| L2 and R2 | Yes, side by side | Yes, side by side |
| Wi-Fi | No | Yes |
| Video out | No | Yes |
| Headphone jack | Yes | Yes |
Green marks the better value where one is clearly better. Prices are launch prices.
Emulation
- RG-351MPRG-503
- Game Boy
- NES
- Genesis
- GBA
- SNES
- PS1
- DS
- N64
- Dreamcast
- PSP
- Saturn
- GameCube
- 3DS
- PS2
100 means the system runs at full speed with no known issues.
Full details
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More comparisons
Why this pair: buyers weigh these two against each other. 14 comments by 11 different people compare them in community discussions, and 3 post titles name both. Specs, emulation scores and launch prices from the retrocatalog.com handheld database.