1. Odroid XU4

2. The ODROID-XU4 boasts amazing performance and data transfer speeds.
About the Odroid XU4
ODROID-XU4 is a new generation of computing device with more powerful, more energy-efficient hardware and a smaller form factor.
Offering open source support, the board can run various flavors of Linux, (ie: Ubuntu, Debian, SuSE, Fedora, etc.) and Android 4.4 KitKat, 5.0 Lollipop and 7.1 Nougat.
The ODROID-XU4 boasts amazing performance and data transfer speeds.

3. Configuration Samsung Exynos 5422 Octa-core mobile processor
2Gbyte DDR3 Memory
eMMC5.0 Flash Storage slot and a Micro SD 3.0 card slot
2 x USB 3.0 Ports, 1 x USB 2.0 Port
Gigabit Ethernet port
HDMI 1.4a port for display

4. Samsung Exynos 5422
Samsung Exynos 5422, the big.LITTLE™ Octa-core mobile processor w/HMP
(Heterogeneous Multi-Processing) is an ARM-based SoC (System-on-Chip)
Cortex™-A15 Quad-core CPU running at up to 2.1 Ghz
Cortex™-A7 Quad-core CPU running at up to 1.4 Ghz
Mali-T628 MP6 GPU running at 600 Mhz with 6 clusters/cores
2Gb DDR3L Dual channel memory

5. Heterogeneous Multi-Processing (HMP) solution
The ODROID-XU4, equipped with four big cores (ARM® Cortex® -A15™ up to 2.1GHz) and four small cores (ARM® Cortex® -A7™ up to 1.4 GHz), provides improved processing capabilities while maintaining the most efficient power consumption available. With the big.LITTLE™ HMP solution, the Exynos-5422 can utilize a maximum of all eight cores to manage computationally intensive tasks.

6. eMMC5.0 Flash Storage embedded Multi-Media Card Built-in controller
Slower than a Solid-State Drive
Faster than SD cards
Faster access times than some hard drives

7. Odroid XU4 Board Layout

8. Booting Can boot from eMMC or SD card by switch
Can dual boot using the switch

9. Recovery Recovery is not a simple process
eMMC comes with Ubuntu Mate built for the Odroid
Try to avoid OS corruption!!!

10. GPIO The GPIOs are 30 pin and 12 pin headers
These GPIOs only have 1.8 vdc
There are several accessory boards for use with this setup
One is called the XU4 Shifter board
This board converts the 30 and 12 pin GPIO to a standard 40 pin GPIO with 3 level shifting IC chips. With the slide switch, either 3.3 vdc or 5 vdc can be chosen.
This board gives the Odroid XU4 the ability to use most boards that are compatible with Raspberry Pi and Arduino.

11. CPU/RAM PERFORMANCE Unixbench: Dhrystone-2
          
Unixbench:
Dhrystone-2
Double-Precision Whetstone (x3)
Nbench 2.2.3: 
Integer (x40)
Floating-Point (x100)
mbw 100:
Memory Bandwidth (MiB/s)

12. Ethernet Performance
The XU4 has an on-board Gigabit Ethernet controller.
Bi-directional streaming speed was measured at ~910 Mbps.
iperf Server (Mbit/sec) – 915.0
iperf Client (Mbit/sec) – 911.0
iPerf is a tool for active measurements of the maximum achievable bandwidth on IP networks. 

13. Cooling Cooling is a must
Depends on use. Several choices are available.
Static heatsink
Cooling fan attached to CPU
Liquid cooling

14. Odroid XU4 by Hardkernel
Presentation by Ken Morrow – W5DTX