Allwinner **F1C100s**, ARM 926EJS processor,up to 900MHz

https://atmega32-avr.com/licheepi-nano-high-performance-sd-card-sized-linux-board-based-on-an-arm9-core/

4 $ https://www.aliexpress.com/item/4000040245703.html?spm=2114.search0302.3.135.7f6916d0oXpTkB&ws_ab_test=searchweb0_0,searchweb201602_0,searchweb201603_0,ppcSwitch_0&algo_pvid=85e5cb7d-9109-465a-af8b-8ba422e47e90&algo_expid=85e5cb7d-9109-465a-af8b-8ba422e47e90-19

  * SoC- Allwinner F1C100s ARM926EJS processor clocked at up to 900MHz
  * System Memory – 32MB DDR integrated into SoC
  * Storage – Micro SD card, and optional 8M SPI flash (unpopulated in the photo above)
  * Display I/F – 40-pin RGB LCD FPC connector supporting 272×480, 480×800, 1024×600 and other resolutions resistive and capacitive displays
  * Video Decoding – H.264 / MPEG up to 720p
  * I/Os via 2.54mm pitch through holes and 1.27mmm pitch castellated holes
  * SDIO for WiFi module
  * 2x SPI, 3x TWI (I2C),3x UART
  * 1x TV out, 2x TV in
  * 2x PWM
  * 1x LRADC
  * 2x speaker output, 1x mic input
  * USB – 1x micro USB OTG port
  * Power Supply
  * Input 5V via micro USB port, 3.3 to 5V via pin
  * Output – 3.3V, selectable input RTC voltage
  * Power Consumption – 54mA (idle) with Linux, 250mA with display
  * Temperature Range – Storage: -40~125°C; operating: -20 to 70°C