9Tripod X3399 SoM and Development Board are Powered by Rockchip RK3399 Hexa Core Processor

9Tripod (九鼎创展) has just launched X3399 system-on-module powered by Rockchip RK3399 hexa-core Cortex A72/A53 processor, and as well as a corresponding development board for people wanted to get started quickly before designing their own baseboard.

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X3399 core board preliminary specifications:

  • SoC – Rockchip RK3399 hexa-core big.LITTLE processor with two ARM Cortex A72 cores up to 2.0 GHz, four Cortex A53 cores, and a ARM Mali-T860 MP4 GPU with OpenGL 1.1 to 3.1 support, OpenVG1.1, OpenCL and DX 11 support
  • System Memory – 2GB LPDDR3 (2x Samsung K4E8E304EE-EGCF)
  • Storage – 8GB eMMC 5.0 flash (Samsung KLM8G1GEND-B031)
  • IOs – 204-pin to be soldered on baseboard
  • PMIC – Rockchip RK808-D
  • Dimensions – 55×55 mm

9Tripod does have a forum in English, but the company provides most of the information in Chinese.  I could not find details about Linux or Android images and source code, except a few mentions of Linux Qt, Ubuntu, and Android OS on a WIP Wiki, and that the bootloader used is xboot open source bootloader managed by 9Tripod community. There are some PDF documents with more details, but I failed to download them even after registration. If somebody could download them, and re-uploaded them somewhere, it would be appreciated.

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The company also provides X399BV1 development board with the RK3399 system-on-module soldered on, and the following (preliminary) specifications:

  • Storage – micro SD card
  • Video Output / Display IF – HDMI 2.0, 2x MIPI DSI connector, 1x MIPI DSI dual connector
  • Audio – Via HDMI, optical S/PDIF 3.5mm headphone jack, left and right speaker headers, 2x on-board microphones
  • Camera – MIPI CSI connector, CIF camera connector
  • Connectivity – Gigabit Ethernet, Ampak AP6354 wireless module with 802.11 n/g/n/ac WiFi 2x2MIMO, and Bluetooth 4.1 LE, micro SIM slot
  • USB – 1x USB type C port, 1x USB 3.0 port, 2x USB 2.0 host ports.
  • Serial- DB9 RS-232 port, TTL UART connector
  • Misc – Buttons, RTC + battery slot

The specifications above have been derived from the board’s photos only. I could not figure the two “connectors” on the bottom of the board are for. An IO header appears to be completely missing from the board, a big omission for a “development” board.

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9Tripod X3399 CoreBoard can be purchased for 599 CNY on Taobao (~$87) , while the developer board goes for 999 CNY ($145). If you don’t need a system-on-module for your own project, and/or can’t read Chinese, you’ll probably be much better served by Firefly-RK3399 development board instead.

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7 years ago

Very interresting, if all drawings are avalible, of course. I noticed 32bis LPDDR3 and not LPDDR4, but nobody is perfect. Let’s have a closer look on this..

7 years ago

I think that bottom of board connector is for mPCIe module (f.e. WiFi card, 3G modem) with a metal latch instead screw holes for securing in place.

6 years ago

It is also on Aliexpress with 16Gb emmc and 7 inch LCD @ £194

6 years ago


You mean this one? https://www.aliexpress.com/store/product/X3399-Development-Board-RK3399-ARM-Dual-Core-Cortex-A72-Quad-Core-Cortex-A53-2GDDR3-16G-EMMC/113595_32815921309.html

Package list:

X3399 Development Board(Including 7 Inch Capacitive LCD ,MIPI interface by default,1024*600 Resolution)
5V DC Power Adapter(NOTE: It’s a Chinese standard plug, a converter may be needed if your country’s standard plug differs from China)
Type C Cable
DB9 Serial Cable
Development Files(Please ask the seller to send the download link after you finish the payment)

Do they really sell that board with a 1024×600 friendlyarm LCD panel for $246? Because that’s quite good.

Also it seems the mPCIe slot has been moved to the top of the panel

6 years ago

That’s…. quite a board.

AP6354 (AC+bluetooth) chip
HDMI, eDP and mipi csi+dsi
mPCIe, sim card slot
RS232 serial + uart header
USB 2.0, 3.0, type-C (one of each)

Who’s this board even made for? It seems like such a catch-all.

6 years ago
Khadas VIM4 SBC