New Standard in High-Bandwidth Connectivity for Military Systems

VPX Technology Roadmap

In 2004, VITA and its members embarked on a journey with the goal to improve the performance of VITA's VME technologies. VPX and the family of supporting specifications is accomplishing that goal. VPX (VITA 46) specifications establish a new direction for the next revolution in bus boards. VPX breaks out from the traditional connector scheme of VMEbus to merge the latest in connector and packaging technology with the latest in bus and serial fabric technology. VPX combines best-in-class technologies to assure a very long technology cycle similar to that of the original VMEbus solutions. Traditional parallel VMEbus will continue to be supported by VPX through bridging schemes that assure a solid migration pathway.

Technologies calling for VPX include:

  • 3U and 6U formats
  • 7-row high speed connector rated up to 6.25 Gbps
  • Choice of high speed serial fabrics
  • PMC and XMC mezzanines
  • Hybrid backplanes to accommodate VME64, VXS and VPX boards


The US Department of Defense and other users are mandating improved implementation of open standards and interoperability. VPX specifications have been focused at the board level, but there is also a need for considering system-level requirements to improve interoperability and reduce customization, testing, cost, and risk. The OpenVPX™ System Specification describes the technical implementation details for 3U and 6U VPX payload and switch modules, backplane topologies, and chassis products, which will provide clear guidance to the Defense primes and suppliers on how to build interoperable computing and communication platforms. Widespread adoption of OpenVPX™ would ultimately create a healthy ecosystem of interoperable components and systems providing customers with the benefits of reuse, choice of best of breed, faster time-to-market, lower risk technology refresh, and more competitive marketplace.

Stay connected