Device comparison

SJGAM M18 / R43 Pro vs. SJGAM M21

Compare specs, emulation support, community reviews, ownership, and play history.

Compare

With

M18 / R43 Pro
M21

Not shown to scale. Real-world dimensions are missing for one or both devices.

Quick verdict

Best value
M21
Better screen
M18 / R43 Pro
More portable
M21
Newer model
M21

Main differences

  • SJGAM M18 / R43 Pro has stronger listed emulation coverage.
  • SJGAM M21 is about $36 cheaper based on catalog pricing.
  • SJGAM M21 is about 54% lighter.
  • SJGAM M21 has a 60 Hz TFT screen, versus 60 Hz IPS on SJGAM M18 / R43 Pro.
  • SJGAM M21 is highlighted for Genesis, GBA, SNES, Game Boy; SJGAM M18 / R43 Pro is highlighted for DS, PS1, Genesis, GBA.

SJGAM

M18 / R43 Pro

Details
Price
$76
OS
Linux (EmuELEC)
Released
Jan 2024
Up to
Dreamcast
Screen
4.3 inch IPS
Weight
450 grams

No reviews yet

0 collectors

SJGAM

M21

Details
Price
$40
OS
Linux (EmuELEC)
Released
Jul 2024
Up to
PS1
Screen
3.5 inch TFT
Weight
208 grams

No reviews yet

0 collectors

Specs

BetterWorse

SpecM18 / R43 ProM21
Price$76$40
Screen4.3 inch3.5 inch
Aspect ratio16:94:3
Resolution480 x 272640 x 480
PanelIPSTFT
ChipsetRockChip RK3566"N909"
CPUCortex-A55Cortex-A7
GPUMali-G52 2EEMali-400 MP2
StorageInternal 4 GB eMMC & External MicroSDInternal & External MicroSD
Battery4000 mAh3000 mAh
Weight450 grams208 grams
Dimensions100 mm x 145 mm x 35 mm123 x 78 x 25 mm
Video outNoYes

Emulation

Excellent › Good › Playable › Limited › Unsupported

SystemM18 / R43 ProM21
Classic systems
Game Boy
NES
Genesis
GBA
SNES
PS1
Mid-generation systems
DS
N64
Dreamcast
PSP
Saturn
Sixth-generation systems
GameCube
Wii
PS2
Modern systems
3DS
Switch
Wii U
PS3

Emulation source notes

  • M18 / R43 Pro DS: Nintendo DS: Almost all games playable at full speed without frameskip This device does not have a touchscreen, so you won't be able to play DS games that rely heavily on the touchscreen
  • M21 DS: Nintendo DS: Most games playable but mostly with frameskip, struggles with harder to emulate games This device does not have a touchscreen, so you won't be able to play DS games that rely heavily on the touchscreen
  • M18 / R43 Pro 3DS: Nintendo 3DS: Only the easiest to emulate games are barely playable 3DS will only work on Android, not Linux
  • M21 3DS: Nintendo 3DS: Either cannot run any games at all or games are unplayably slow
  • M18 / R43 Pro GBA: Nintendo Game Boy Advance: Almost all games playable at full speed without frameskip
  • M21 GBA: Nintendo Game Boy Advance: Almost all games playable at full speed without frameskip
  • M18 / R43 Pro N64: Nintendo 64: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip
  • M21 N64: Nintendo 64: Most games playable but mostly with frameskip, struggles with harder to emulate games
  • M18 / R43 Pro NES: Nintendo Entertainment System: Almost all games playable at full speed without frameskip
  • M21 NES: Nintendo Entertainment System: Almost all games playable at full speed without frameskip
  • M18 / R43 Pro PS1: Sony Playstation: Almost all games playable at full speed without frameskip
  • M21 PS1: Sony Playstation: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip
  • M18 / R43 Pro PS2: Sony Playstation 2: Only the easiest to emulate games are barely playable PS2 will only work on Android, not Linux
  • M21 PS2: Sony Playstation 2: Either cannot run any games at all or games are unplayably slow
  • M18 / R43 Pro PS3: Sony Playstation 3: Either cannot run any games at all or games are unplayably slow
  • M21 PS3: Sony Playstation 3: Either cannot run any games at all or games are unplayably slow
  • M18 / R43 Pro PSP: Sony Playstation Portable: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip
  • M21 PSP: Sony Playstation Portable: Only the easiest to emulate games are barely playable
  • M18 / R43 Pro Wii: Nintendo Wii: Either cannot run any games at all or games are unplayably slow
  • M21 Wii: Nintendo Wii: Either cannot run any games at all or games are unplayably slow
  • M18 / R43 Pro SNES: Super Nintendo Entertainment System: Almost all games playable at full speed without frameskip
  • M21 SNES: Super Nintendo Entertainment System: Almost all games playable at full speed without frameskip
  • M18 / R43 Pro Wii U: Nintendo Wii U: Either cannot run any games at all or games are unplayably slow
  • M21 Wii U: Nintendo Wii U: Either cannot run any games at all or games are unplayably slow
  • M18 / R43 Pro Saturn: Sega Saturn: Most games playable but mostly with frameskip, struggles with harder to emulate games
  • M21 Saturn: Sega Saturn: Only the easiest to emulate games are barely playable
  • M18 / R43 Pro Switch: Nintendo Switch: Either cannot run any games at all or games are unplayably slow
  • M21 Switch: Nintendo Switch: Either cannot run any games at all or games are unplayably slow
  • M18 / R43 Pro Genesis: Sega Genesis / Mega Drive: Almost all games playable at full speed without frameskip
  • M21 Genesis: Sega Genesis / Mega Drive: Almost all games playable at full speed without frameskip
  • M18 / R43 Pro Game Boy: Game Boy / Game Boy Color: Almost all games playable at full speed without frameskip
  • M21 Game Boy: Game Boy / Game Boy Color: Almost all games playable at full speed without frameskip
  • M18 / R43 Pro GameCube: Nintendo GameCube: Only the easiest to emulate games are barely playable
  • M21 GameCube: Nintendo GameCube: Either cannot run any games at all or games are unplayably slow
  • M18 / R43 Pro Dreamcast: Sega Dreamcast: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip
  • M21 Dreamcast: Sega Dreamcast: Most games playable but mostly with frameskip, struggles with harder to emulate games

Frequently asked

What's the difference between the SJGAM M18 / R43 Pro and the SJGAM M21?
SJGAM M18 / R43 Pro has stronger listed emulation coverage. SJGAM M21 is about $36 cheaper based on catalog pricing. SJGAM M21 is about 54% lighter. SJGAM M21 has a 60 Hz TFT screen, versus 60 Hz IPS on SJGAM M18 / R43 Pro. SJGAM M21 is highlighted for Genesis, GBA, SNES, Game Boy; SJGAM M18 / R43 Pro is highlighted for DS, PS1, Genesis, GBA.
Which is cheaper, the SJGAM M18 / R43 Pro or the SJGAM M21?
The SJGAM M21 is the cheaper of the two at around $40, roughly $36 less than the SJGAM M18 / R43 Pro based on catalog pricing.
Which is newer, the SJGAM M18 / R43 Pro or the SJGAM M21?
The SJGAM M21 is the newer model, released in 2024.

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