Project Chair: Mark Shaw | John Stuewe

Open Compute motherboards are power-optimized, barebones designs that provide the lowest capital and operating costs. Many features found in traditional motherboards have been removed from the design.

AMD

The OCP specification for the AMD v2.0 motherboard is a dual AMD G34 socket motherboard (Magny Cours or Interlagos) with 16 DIMM slots (PCB mechanical and motherboard mechanical coming soon). AMD developed their own version of the board, the AMD Open 3.0 modular server, for the AMD Financial Services Open Platform. The OCP Asia-Pacific chapter translated the AMD v2.0 motherboard into Japanese. For CAD files and other specifications, see the AMD Motherboard page.

ARM

Calxeda has developed an ARM-based server that converts the Open Vault JBOD into a storage server. You can download the specification.

High Availability

The high availability (HA) server leverages the Intel Motherboard Hardware Specification v2.0. Instead of accommodating two server motherboard trays with one shared PSU, it accommodates one server motherboard tray with one PSU tray holding two PSUs. This adds redundant PSU capability into the server design of the Intel motherboard, to facilitate more use cases that require a redundant PSU. You can download the HA server specification.

Intel

The OCP specification for the Intel v2.0 motherboard uses two Intel® Xeon® E5-2600 processors and 16 DIMM slots per board. Intel developed their own version of the board, called Decathlete, for financial services. Facebook developed a server for Open Rack that uses the Intel v2.0 motherboard code-named Windmill (you can download the CAD files for Windmill). There is a specification for the mezzanine card designed for use with Intel v2.0 motherboards. The mezzanine card provides extended functionality, such as support for 10GbE PCI-E devices. The OCP Asia-Pacific chapter translated the Intel v1.0 motherboard into Japanese. For CAD files and other specifications, see the Intel motherboard page.

System on a Chip

System on a chip, or SOC, is a micro-server built on a PCIe-like card that hosts the SOC, dynamic memory for the SOC, and a storage device. This micro-server can be installed in slots on a baseboard. The baseboard provides power distribution and control, BMC management capabilities, and network distribution. The baseboard may or may not be plugged into a midplane. Applied Micro and Facebook both developed SOC micro-servers. Download the Applied Micro and Facebook specifications.

Power Supply

OCP power supplies are used in a variety of Open Compute hardware. There are two choices:

  • OCP 700W-SH AC/DC power converter, a single voltage 12.5Vdc, closed frame, self-cooled power supply used in high efficiency IT applications. The supply is configurable to a 450W-SH power rating, as it uses the same PCBs, with just pin-to-pin component replacements.
  • OCP 450W power supply.

For CAD files and other specifications, see the power supply page.