VPX, CPCI-e and CPCI HDfpga Saturday, March 12, 2011 Comparison of VPX, CPCI-e and CPCI VPX , formerly known as VITA 46 , is an ANSI standard (ANSI/VITA 46.0-2007) that provides VMEbus-based systems with support for switched fabrics over a new high speed connector. Technologies called for in VPX include: Both