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Sjgam M20 Handheld Gaming Console Review: Specs, Features, and Buying Guide

Sjgam M20 Handheld Gaming Console Review: Specs, Features, and Buying Guide

Overview

The Sjgam M20, also known as the Shijia M20, is a retro gaming handheld released by SJGAM in January 2025. It is built around the RockChip RK3566 processor with a quad-core Cortex-A55 CPU clocked at 1.8 GHz and a Mali-G52 2EE GPU running at 850 MHz. The device features 1GB of DDR4 RAM and relies on external microSD storage (64GB or 128GB options). Its 7-inch IPS display has a resolution of 1024x600, a 17:10 aspect ratio, and a pixel density of 169.5 PPI. The handheld runs an open-source operating system and supports emulation up to N64, PSP, and Dreamcast.

Key Specs Highlights

  • Processor: RockChip RK3566 (4x Cortex-A55 @ 1.8 GHz)
  • GPU: Mali-G52 2EE @ 850 MHz
  • Memory: 1GB DDR4
  • Storage: External microSD (64GB/128GB)
  • Display: 7.0-inch IPS, 1024x600, 60Hz
  • Battery: 4000 mAh
  • Connectivity: WiFi, Mini HDMI, USB-C video out (via dock)
  • Audio: Dual stereo speakers, 3.5mm headphone jack
  • Dimensions: 242 x 105 x 30 mm, 350g

Who It Is For

The Sjgam M20 is ideal for retro gaming enthusiasts who want a larger screen for classic titles. It suits players looking for an affordable device capable of emulating N64, PSP, and Dreamcast games, with the flexibility of open-source software. The plastic build and lack of active cooling make it a casual, entry-level choice.

Buying Notes

As of early 2025, the Sjgam M20 is available from various online retailers. No official price has been disclosed. Consider the external storage requirement and the absence of vibration and sensors. The USB-C video output requires a proprietary dock. For emulation performance, expect smooth gameplay for most 2D and lighter 3D titles, but heavier PSP and Dreamcast games may experience slowdowns.

Specifications
CPUCortex-A55
GPUMali-G52 2EE
NameSjgam M20
AliasShijia M20
BrandSJGAM
Memory1GB DDR4
Weight350 g
Battery4000 mAh
CoolingNone
StorageExternal 64GB / 128GB microSD slot
SpeakersDual stereo
Grip TypeHorizontal
ProcessorRockChip RK3566
VibrationNone
Body ColorBlack
Dimensions242 mm x 105 mm x 30 mm
Screen PPI169.5
Screen Size7.0 inches
Screen TypeIPS full lamination
Audio Output3.5mm headphone jack
ConnectivityWiFi
Release Date2025 / 01
Screen Ratio17:10
Video OutputMini HDMI, USB-C video output (via dedicated dock)
CPU Frequency1.8 GHz
Shell MaterialPlastic
Operating SystemOpen source system
Screen Resolution1024 x 600
GPU Core Frequency850 MHz
Screen Refresh Rate60Hz
CPU Cores and Threads4 cores 4 threads
Emulator Game SupportUp to N64, PSP, DC

Full specs and updates on our site: https://www.oldman.dpdns.org/en/handheld/sjgam-m20

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