ODROID-C4 4GB Ram

ODROID-C4 4GB Ram

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ODROID-C4 is a new generation single board computer that is more energy efficient and faster performing than ODROID-C2 which was introduced over four years ago as the world’s first affordable ARM 64bit computer.

The main CPU of the ODROID-C4 is built with a quad-core Cortex-A55 cluster with a new generation Mali-G31 GPU. The A55 cores run at 2.0Ghz without thermal throttling using the stock heat sink allowing a robust and quiet computer. The CPU multi-core performance is around 40% faster, and the system DRAM performance is 50% faster than the ODROID-C2.


A CPU (Amlogic S905X3) H 2 x System LED indicators
B DDR4 memory (4GiB) I 1 x UART for system console
C 4 x USB 3.0 host ports J 1 x IR receiver
D 1 x RJ45 Ethernet port (10/100/1000) K 40 x GPIO pins
E 1 x HDMI 2.0 L 7 x GPIO pins
F 1 x Micro USB 2.0 port (OTG) M 1 x eMMC module socket
G 1 x DC power jack (Outer diameter : 5.5mm, inner diameter : 2.1mm) N 1 x Micro SD slot


CPU performance

Dhrystone-2, Double-Precision Whetstone, 7-zip compression benchmark results show the ODROID-C4 system performance is 40 ~ 55% faster than the previous generation ODROID-C2.

GPU performance

The Mali-G31 runs at 650MHz and is ~50% faster than Mali-450MP in ODROID-C2. The Mali-G31 is the first generation Bifrost-based mainstream GPU from Arm.

GPU performance was measured with the glmark2-es2 “–off-screen” option.

RAM performance

Why does DDR4 matter? ODROID-C4 DDR4 RAM runs at 1320Mhz. The memory bandwidth is 1.6 times higher than ODROID-C2.

CPU frequency vs performance

Some ODROID users may recall the lower than expected clock speed with ODROID-C2’s S905.

We ran a test to confirm the ratio between CPU clock frequency and performance with ODROID-C4.

Thermal characteristics

To check thermal throttling, we ran some heavy CPU and GPU loads together on the SoC and monitored the temperature. We ran the test within a chamber that maintains the ambient temperature at 25°C.

Note that the current thermal throttling point is set at 75°C in the Kernel configuration.

 

Note that if you put the ODROID-C4 board into an enclosure, you may encounter some thermal throttling issues when the ambient temperature is higher than 20°C and the continuous computing load is very high.

Ethernet

According to our iperf test result, the throughput performance was near 1Gbps.

USB Host

We measured the USB3 transfer speed with a UAS capable SSD.

The average ~340MB/s of throughput should be acceptable for many applications.

Since four USB host ports share a single root hub, the transfer rate will be lower if you use multiple USB3 devices at the same time. 

eMMC storage performance

Sequential read and write speed is over 165MB/s and 125MB/s respectively.

4K random access performance is reasonably fast too. iozone test results are as follows.

Micro-SD UHS performance

Using properly implemented UHS dynamic voltage scaling, the sequential read and write speed is over 70MB/s and 50MB/s respectively.

Cryptography

The ARMv8 architecture supports hardware accelerated crypto extensions for building a secure system. As expected, we could see very decent openSSL performance with ODROID-C4.

GPIO (40Pin Header)

The ODROID-C4 GPIO interface is similar to C2 and fully supports a 3.3Volt interface. This is beneficial for using various peripherals without complicated level shifters as with the XU4’s 1.8Volt GPIOs. Another big improvement is a faster SPI bus interface with a maximum frequency of about 100Mhz. It is significantly faster than the ODROID-C2’s 400Khz software “bit-banged” SPI.

Power consumption

Thanks to the modern 12nm fabricated S905X3 CPU, the power consumption and heat dissipation are relatively very low.

Therefore, we can enjoy a quiet and powerful computer with high energy efficiency.

Idle state: ≃ 0.18 Watt
Heavy load state: 3.1~3.3 Watt (stress-ng –cpu 4 –cpu-method matrixprod)
No cables are attached except DC power input and USB-UART debug console cable.

Note:

  • The power consumption in “IDLE” is measured when a device is not being operated for 5 minutes since the CPU governor is set to ‘performance’.
  • The measured power consumption is not absolute and could vary in certain conditions.

Specifications

Form factor Board Dimensions: 85mm x 56mm x 1.0mm

Heatsink Dimensions: 40mm x 32mm x 10mm

Weight: 59g including heatsink

Processor Amlogic S905X3 12nm Processor

L1 instruction cache: 32 KB, 4-way set associative (128 sets), 64 byte lines, shared by 1 processor

L1 data cache: 32 KB, 4-way set associative (128 sets), 64 byte lines, shared by 1 processor

L3 data cache: 512KB , 16-way set associative (512 sets), 64 byte lines, shared by 4 processors

Quad-Core Cortex-A55 (2.016GHz)

ARMv8-A architecture with Neon and Crypto extensions

Mali-G31 MP2 GPU with 4 x Execution Engines (650Mhz)

Memory DDR4 4GiB with 32-bit bus width

Data rate: 2640 MT/s (PC4-21333 grade)

1.2Volt low power design

Storage 1x eMMC connector (8/16/32/64GiB are available)

1x Micro SD slot (DS/HS mode up to UHS-I SDR104)

Networking 1 x GbE LAN ports (RJ45, supports 10/100/1000 Mbps)

– Realtek RTL8211F (Ethernet transceiver)

– LED indicators

* Green LED: Flashing by data traffic at 100Mbps connection

* Amber LED: Flashing by data traffic at 1000Mbps connection

Optional WiFi USB adapters

Video 1 x HDMI 2.0 (up to 4K@60Hz with HDR, CEC, EDID)
Audio 1 x HDMI digital output

1 x Optional SPDIF optical output

External I/O 4 x USB 3.0 Host ports (shares one single root hub)

1 x USB 2.0 OTG port for Host or Device mode. (No power input)

1 x Debug serial console (UART)

1 x Peripheral Expansion Header (40-pin, 2.54mm pitch)

  • 2x DC 5V, 2x DC 3.3V, 1x DC 1.8V, 8x GND
  • 1x SPI
  • 1x UART
  • 2x I2C
  • 6x PWM
  • 2x ADC input (12bit, 1.8V Max)
  • 25x GPIO (Max)

1x Audio Expansion Header (7-pin, 2.54mm pitch)

  • 1x DC 5V
  • 1x SPDIF out
  • 1x I2S

– All 3.3V I/O signal level except for ADC input at max 1.8Volt.

Other features IR receiver for remote controller

System LEDS Indicators:

– Red (PWR) – Solid light when DC power is connected

– Blue (ALIVE) – Flashing like heartbeat while Kernel is running.

Power 1 x DC jack : outer (negative) diameter 5.5mm, inner (positive) diameter 2.1mm

DC input :  5.5V ~ 17V

– DC 12V/2A power adaptor is recommended

Power consumption:

– IDLE : ≃ 1.8W

– CPU Stress : ≃ 3.64W (Performance governor)

– Power-off : ≃ 0.14W

Ubuntu 20.04 + Kernel 5.4 + Wayland + FireFox + WebGL