When comparing ODROID-C2 vs ODROID-XU4, the Slant community recommends ODROID-XU4 for most people. In the question“What are the best single-board computers?” ODROID-XU4 is ranked 7th while ODROID-C2 is ranked 20th. The most important reason people chose ODROID-XU4 is:
Much faster than 10/100 as it contains a gigabit ethernet port.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Good support for Ubuntu
The C2 has pretty decent support for Ubuntu and it can be used with it for basic day-to-day operations such as browsing the web and editing documents with LibreOffice among others.
Pro Superior performance compared with other boards
Pro Built-in heatsink
The ODROID C2 has a built-in heatsink which covers the CPU and two of the RAM chips.
Pro Can fit inside Raspberry Pi cases
Since its shape and size closely mimic that of Pi 3, it can fit on most Raspberry Pi cases available.
Pro Will have mainline kernel support
Pro Relatively low power requirements
The board by itself needs about 0.5A to run, but it's advised to use a 2A power supply for when peripherals are attached.
Pro Fast ethernet
Much faster than 10/100 as it contains a gigabit ethernet port.
Pro Great performance
The performance runs laps around competitors in terms of raw power with its impressive specs and octa-core processing.
Pro Includes cooling system
Includes fan and heatsink combo standard. Fan spins when CPU is load is high. Other single-board computers require a seperate purchase where fan runs constantly, has improper power supply, or requires complex setup for proper funtion.
Pro USB 3.0 ports
The ODROID-XU4 has two USB 3.0 ports. Making it one of the few single board computers to have them.
Pro Great OS support
ODROID supports and can run a full desktop version of Ubuntu. Other than that it can run Android, of which there are some excellent ports for ODROID-XU4.
Pro Supports eMMC 5.0 storage
Pro Includes a power button
Some single-board computers have no power button, requiring the power supply to be unplugged or customization to add a button.
Pro Fast processor and good memory capacity
It is very good for emulation.
Pro Fast processor and good memory capacity
Very good for emulation
Pro Practically very usable general purpose computer experience
Practically very usable general purpose computer experience with much lower power consumption when eMMC 5.0 storage is used for booting.
Pro Includes power adapter
Many single-board computers require you to purchase a power adapter separately.
Cons
Con No built in WiFi
There is no built-in WiFi, and kernel headers for 3.14 are almost impossible to find, making driver compiling very difficult.
Con Old kernel available
Only the 3.14 branche is available
Con Early revisions use a 2.5mm power socket instead of a USB port
Early revisions of the C2 use a 2.5mm power socket instead of the micro USB port available on the board or any of the other USB ports. While not a drawback in terms of strength of the board, it's a bit annoying having to order a new power supply to work with the C2.
Later revisions of the board can use the USB port for charging. However, ODROID recommends using the power socket if there are several devices attached to the board because they can increase the draw up to 2A and a lot of cheaper USB power adapters won't do 2A.
Con Might have problems with default HDMI resolution when first starting up
It's not unusual for the C2 to have a "Mode not supported" message when first booted up and connected to a monitor through the HDMI port. This can be fixed by logging through SSH and editing the boot.ini on a FAT partition on the SD card to set the correct HDMI resolution and the process is detailed pretty well on the ODROID wiki but it may be out of scope for some users and pretty annoying for the rest.
Con SD card corrupts
SD card corrupts easily with the XU4, use emmc for more stability but even then it is not that reliable. Also need to reimage the memory every so often.
Con No Audio CODEC
To get Audio out of the XU4 you need to use an HDMI device that has built-in speakers. A USB pdif will work, too.
Con Expensive
It’s expensive for a SBC, for ~$20 more you can get a faster x86 PC barebone.
Con No SATA port
Con Requires a separate power supply (no power via USB OTG)
Con Does not natively support most accessories and sensors on the market
The ODROID GPIO pins operate at 1.8V which means that it cannot support most accessories and sensors on the market which operate at 3.3V or 5V. But this can be fixed for the XU4 with the XU4 Shifter Shield which adapts them for voltages used in the market. It comes at an extra cost of $18 though.
Con SD card corrupts
SD card corrupts easily with the XU4, you can use emmc for more stability but even then it is not that reliable. You will also need to reimage the memory every so often.