this turing pi cost $189; 7x rasp pi 3 cost $210 and we need to buy SD card or eMMC, power plug or usb power hub. the total cost is not cheap either, when compa

this turing pi cost $189; 7x rasp pi 3 cost $210 and we need to buy SD card or eMMC, power plug or usb power hub. the total cost is not cheap either, when compare with used server rack.