pas mal

http://www.hardkernel.com/main/products/prdt_info.php?g_code=G150229074080

 Samsung Exynos5422 Cortex-A15 2Ghz and Cortex-A7 Octa core CPUs
* 2Gbyte LPDDR3 RAM PoP stacked
* SATA port for 2.5inch HDD/SSD storage
* Gigabit Ethernet port
* USB 2.0 Host
* UHS-1 capable micro-SD card slot for boot media
* Size : 147 x 85 x 29 mm approx.(including Aluminium cooling frame)
* Linux server OS images based on modern Kernel 4.9 LTS
49$

mouai

S905x en Soc ARM + 2Go Ram (le même que dans la box Android je crois, en A53)

Amlogic S905X SoC
4 ARM Cortex-A53
2G + 3P ARM Mali-450
OpenGL ES 1.1 / 2.0
OpenVG 1.1
Amlogic Video Engine 10
Decoders

VP9 P2 4K60
H.265 MP10@L5.1 4K60
H.264 HP@L5.1 4K30
JPEG / MJPEG
Encoders

H.264 1080P60
JPEG
1GB or 2GB DDR3 RAM
HDMI 2.0 Port
3.5mm TRRS Jack – Left Right Ground CVBS 480i / 576i
EMMC Interface with HS400 Support
MicroSD Card Slot with UHS SDR104 Support
ADC + I2S Header
SPDIF Out Header
100 Mb Ethernet
4 USB 2.0 Type A
IR Receiver
UART via Header

etc...

SoC – Amlogic S905 quad core cortex-A53 processor @ 1.5 GHz with penta core Mali-450MP GPU
    System Memory – 2Go DDR3
    Storage – eMMC module socket, micro SD slot
    Video Output – HDMI 2.0 up to 4K @ 60 Hz
    Connectivity – Gigabit Ethernet (Realtek RTL8211F), 802.11 b/g/n WiFi + Bluetooth 4.0 (AP6212 module) with chip antenna + IPX connector
    USB – 4x USB 2.0 host ports (GL825G USB hub) + micro USB OTG port for power and adata
    Expansion Header
        40-pin header with GPIO, I2C, UART, ADC, PWM, SPDIF, and CVBS
        7-pin I2S interface
    Debugging – 4-pin Serial console port (3.3V)
    Misc – Status & power LEDs, IR receiver, boot selector, power jumper, power key (populated)
    Power Supply –  5V/2A DC input via 4.0×1.7mm power barrel, or micro USB port (selectable via jumper)
    Dimensions – 85 x 56mm

SoC – Allwinner H3 quad core Cortex A7 processor @ 1.2 GHz with Mali-400MP2 GPU @ 600 MHz
    System Memory – 512 MB DDR3 SDRAM
    Storage – 8GB eMMC flash + micro SD card slot
    Video Output – HDMI port with CEC support
    Connectivity – 802.11 b/g/n WiFi + Bluetooth 4.0 LE (Ampak AP6212) with u.FL antenna connector and external antenna
    USB – 1x micro USB OTG port
    Camera – MIPI CSI port
    Expansion headers – Unpopulated 26-pin “Raspberry Pi B+” header + 13-pin header with headphone, 2x USB 2.0, TV out, microphone and IR receiver signals
    Debugging – 3-pin serial console header
    Misc – 2x LEDs for power and status
    Power Supply – 5V via micro USB port
    Dimensions – 48 x 46 mm
    Weight – 20 grams
18€

SoC – Allwinner R40 quad Core ARM Cortex A7 processor with ARM Mali-400MP2 GPU
    System Memory – 2G DDR3 SDRAM
    Storage – 8GB eMMC flash (16, 32 or 64GB as options), SATA interface, micro SD slot up to 256 GB
    Connectivity – 1x Gigabit Ethernet port, 802.11 b/g/n WiFi and Bluetooth 4.0 (AP6212 module)
    Video Output – HDMI 1.4 port up to 1080p60, 4-lane MIPI DSI display connector
    Audio I/O – HDMI, 3.5mm headphone jack, built0in microphone
    USB – 2x USB 2.0 host ports, 1x micro USB OTG port
    Camera – CSI camera connector
    Expansion – 40-pin Raspberry Pi compatible header with GPIOs, I2C, SPI, UART, ID EEPROM, 5V, 3.3V, GND signals.
    Debugging – 3-pin UART for serial console
    Misc – Reset, power, and u-boot buttons; IR receiver
    Power Supply – 5V via barrel connector, or 3.7V Lithium battery via battery connector on the back of the board. AXP221s PMIC
    Dimensions – 92 x 60 mm

assez bonne specs mais très cher (370$ la version 570x)

    Intel Joule 570x platform
        SoC – Intel Atom T5700 64-bit quad-core processor @ 1.7 GHz / 2.4 GHz (Burst frequency) with Intel HD Graphics with 4K video capture and display
        System Memory – 4GB LPDDR4 RAM
        Storage – 16GB eMMC memory
        Connectivity – 802.11ac Wi-Fi with MIMO and Bluetooth 4.1
        Other interfaces –  USB 3.0, MPI CSI and DSI interfaces, and multiple GPIO, I2C, UART interfaces
    Intel Joule 550x platform
        SoC – Intel Atom T5500 64-bit quad-core processor @ 1.5 GHz with Intel HD Graphics with 4K video capture and display
        System Memory – 3GB LPDDR4 RAM
        Storage – 8GB eMMC memory
        Connectivity – 802.11ac Wi-Fi with MIMO and Bluetooth 4.1
        Other interfaces –  USB 3.0, MPI CSI and DSI interfaces, and multiple GPIO, I2C, UART interfaces

http://www.cnx-software.com/2016/08/17/intel-unveils-joule-compute-module-and-devkit-for-iot-based-on-atom-t5500-t5700-processors/
et des slides :
https://www.computerbase.de/bildstrecke/74065/1/

huit coeurs ARM Cortex-A53 cadencés à un 1,4 GHz et associé à un bon vieux Chipset Mali 400.

SoC – Allwinner H3 quad core Cortex A7 @ 1.3 GHz with ARM Mali-400MP2 GPU up to 600 MHz
    System Memory – 2GB DDR3
    Storage – 16GB eMMC, micro SD card slot,
    Video Output – HDMI, AV port
    Audio I/O – HDMI, AV port, on-board microphone
    Connectivity – 10/100/1000M Ethernet, 802.11 b/g/n Wi-Fi
    USB – 3x USB 2.0 host ports, 1x micro USB OTG port (without external USB hub chip)
    Expansion – 40-pin Raspberry Pi compatible header
    Debugging – 3-pin UART header for serial console
    Misc – IR receiver; Power, recovery, and upgrade buttons
    Power Supply – 5V/2A via barrel jack or 5V/GND header pins; Power and status LEDs; SY8106A regulator.
    Dimensions – 108 x 67 mm (TBC)
http://www.minimachines.net/actu/orange-pi-plus-2e-40076

SoC        SoM IB8000 – Intel Atom x5-E8000 quad core processor @ 1.04 / 2.0 GHz with 12EU Intel HD graphics @ 320/600 MHz (5W TDP)
             SoM IB3710 – Intel Pentium N3710 quad core processor @ 1.6 / 2.56 GHz with 16EU Intel HD graphics 405 @ 400/700 MHz (6W TDP)
    System Memory
        SoM IB8000 – 1GB (single channel), 2GB, 4GB or 8GB (dual channel)
        SoM IB3710 – Up to 8GB (default size)
    Storage – 64Mbit SPI flash for BIOS/UEFI externally programmable via 8-pin header, optional 4 to 128GB eMMC flash
    Connectivity – 10/100/1000 Mbps Ethernet (RTL8111G)
    MCU – STMicro STM32F042K4U6 ARM Cortex-M4 with 5 generic input/output, 1xHDMI CEC, and 1x IR input connected to main processor via USB.
    Board to Board Connectors – 3x 80-pin Hirose DF40 (1.5mm to 4mm mating) with the following interfaces
        Video Output
            HDMI 1.4b up to 3840×2160 @ 30Hz / 2560×1600 @ 60Hz
            eDP 1.4 up to 2560×1600 @ 60Hz, 24bpp
        Camera I/F – 1x 4-lane MIPI CSI-2, 1x 2-lane MIPI CSI-2
        Storage – 2x SATA 6Gbps, 4x data pins for SD interface
        USB – 4x USB 3.0 including one OTG
        3x PCIe Gen 2.0 1-lane
        2x full UART, 1x I2C, GPIOs (multiplexed)
        Audio signals (no details provided)
    Misc – RTC with 3.3v battery on-carrier
    Power Supply – 7V to 21V Vin; PMU: 2 wake up signal and other power management indications
    Dimensions – 52.8 x 40 mm
"La visée de ce type de solution est évidemment industrielle" (...)                              ultra compact, ça sera sans doute inabordable, mais ça serait tellement top en minipc.