Overview and Specifications:
The Compute Module 3 Lite contains the guts of a Raspberry Pi 3 (the BCM2837 processor and 1GB RAM), without the 4GB of on-module eMMC flash found on the Compute Module 3.
The Pi 3 has a processor speed of 1.2GHz and runs at roughly 10 times the speed of the Pi 1 due to its quad-core CPU.
This is all integrated on to a small 67.6mm x 31mm board which fits into a standard DDR2 SODIMM connector (the same type of connector as used for laptop memory).
The Flash memory is connected directly to the processor on the board, but the remaining processor interfaces are available to the user via the connector pins.
You get the full flexibility of the BCM2837 SoC (which means that many more GPIOs and interfaces are available as compared to the Raspberry Pi).CM3/CM3L
BCM283764-bit 1.2GHz quad-core ARM Cortex-A53 processor 1GB RAM4GB eMMC Flash (for CM3 only, not for CM3L)200PIN SODIMM connector (35U hard gold plating I/O pins)
48 x GPIO
2 x I2C
2 x SPI2 x UART
2 x SD/SDIO (1x SD pin on CM3 has been used for 4GB eMMC Flash)
1 x HDMI 1.3a
1 x USB2 HOST/OTG
1 x DPI (parallel RGB display)
1 x NAND(SMI)
1 x 4-lane CSI Camera Interface (up to 1Gbps per lane)
1 x 2-lane CSI Camera Interface (up to 1Gbps per lane)
1 x 4-lane DSI Display Interface (up to 1Gbps per lane)
1 x 2-lane DSI Display Interface (up to 1Gbps per lane)
Compared to CM1, the CM3/CM3L supports more OS, like Windows 10 (the free IOT-specific version from Microsoft)