Device comparison

SJGAM M17 vs. SJGAM M21

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

Compare

With

M17
M21

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

Quick verdict

Best value
M17
Better screen
M17
Newer model
M21

Main differences

  • SJGAM M21 has similar emulation coverage to SJGAM M17.
  • SJGAM M17 is about $5 cheaper based on catalog pricing.
  • SJGAM M21 has a 60 Hz TFT screen, versus 60 Hz IPS on SJGAM M17.
  • SJGAM M21 runs Linux (EmuELEC); SJGAM M17 runs Linux.
  • SJGAM M21 is highlighted for Game Boy, NES, Genesis, GBA; SJGAM M17 is highlighted for Game Boy, NES, Genesis.

SJGAM

M17

Details
Price
$35
OS
Linux
Released
Sep 2023
Up to
PS1
Screen
4.3 inch IPS
Weight
?

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

SpecM17M21
Price$35$40
OSLinuxLinux (EmuELEC)
Screen4.3 inch3.5 inch
Aspect ratio16:94:3
Resolution480 x 272640 x 480
PanelIPSTFT
ChipsetRockChip RK3126C"N909"
RAM256 MB LPDDR31 GB DDR4
StorageInternal 4 GB eMMC & External MicroSDInternal & External MicroSD
Battery1500 mAh3000 mAh
Weight?208 grams
Video outNoYes

Emulation

Excellent › Good › Playable › Limited › Unsupported

SystemM17M21
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

  • M17 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
  • 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
  • M17 3DS: Nintendo 3DS: Either cannot run any games at all or games are unplayably slow
  • M21 3DS: Nintendo 3DS: Either cannot run any games at all or games are unplayably slow
  • M17 GBA: Nintendo Game Boy Advance: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip "Considerable lag, without frameskip on some games like doom 2 and duke nukem advance (gpsp and minui) to the point where its borderline B rating" - Jan Paweł
  • M21 GBA: Nintendo Game Boy Advance: Almost all games playable at full speed without frameskip
  • M17 N64: Nintendo 64: Only the easiest to emulate games are barely playable
  • M21 N64: Nintendo 64: Most games playable but mostly with frameskip, struggles with harder to emulate games
  • M17 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
  • M17 PS1: Sony Playstation: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip
  • M21 PS1: Sony Playstation: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip
  • M17 PS2: Sony Playstation 2: Either cannot run any games at all or games are unplayably slow
  • M21 PS2: Sony Playstation 2: Either cannot run any games at all or games are unplayably slow
  • M17 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
  • M17 PSP: Sony Playstation Portable: Only the easiest to emulate games are barely playable
  • M21 PSP: Sony Playstation Portable: Only the easiest to emulate games are barely playable
  • M17 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
  • M17 SNES: Super Nintendo Entertainment System: Most games playable at full speed, a few games have lower frame rates but still mostly playable with frameskip "Horrifying audio crackling at some select SA-1 and FX games (DBZ Hyper Dimension and Stunt Race FX), minui + supafaust" - Jan Paweł
  • M21 SNES: Super Nintendo Entertainment System: Almost all games playable at full speed without frameskip
  • M17 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
  • M17 Saturn: Sega Saturn: Either cannot run any games at all or games are unplayably slow
  • M21 Saturn: Sega Saturn: Only the easiest to emulate games are barely playable
  • M17 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
  • M17 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
  • M17 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
  • M17 GameCube: Nintendo GameCube: Either cannot run any games at all or games are unplayably slow
  • M21 GameCube: Nintendo GameCube: Either cannot run any games at all or games are unplayably slow
  • M17 Dreamcast: Sega Dreamcast: Either cannot run any games at all or games are unplayably slow
  • 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 M17 and the SJGAM M21?
SJGAM M21 has similar emulation coverage to SJGAM M17. SJGAM M17 is about $5 cheaper based on catalog pricing. SJGAM M21 has a 60 Hz TFT screen, versus 60 Hz IPS on SJGAM M17. SJGAM M21 runs Linux (EmuELEC); SJGAM M17 runs Linux. SJGAM M21 is highlighted for Game Boy, NES, Genesis, GBA; SJGAM M17 is highlighted for Game Boy, NES, Genesis.
Which is cheaper, the SJGAM M17 or the SJGAM M21?
The SJGAM M17 is the cheaper of the two at around $35, roughly $5 less than the SJGAM M21 based on catalog pricing.
Which is newer, the SJGAM M17 or the SJGAM M21?
The SJGAM M21 is the newer model, released in 2024.

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