thumb|An SX-5 on display at the [[Australian Technology Park]]

NEC SX describes a series of vector supercomputers designed, manufactured, and marketed by NEC. This computer series is notable for providing the first computer to exceed 1 gigaflop,

The SX-4 series was announced in 1994, and first shipped in 1995. Since the SX-4, SX series supercomputers are constructed in a doubly parallel manner. A number of central processing units (CPUs) are arranged into a parallel vector processing node. These nodes are then installed in a regular SMP arrangement.

The SX-5 was announced and shipped in 1998,

Tadashi Watanabe has been NEC's lead designer for the majority of SX supercomputer systems.

SX systems

Each system has multiple models, and the following table lists the most powerful variant of each system. Further certain systems have revisions, identified by a letter suffix.

{| class="wikitable sortable" style="text-align:center" cellpadding="4" width="600"

|+Single node SX systems

|-

! System !! data-sort-type=number | Introduction !! data-sort-type=number | Max. CPUs !! data-sort-type=number | Peak CPU double precision GFLOPS !! data-sort-type=number | Peak system GFLOPS !! Max. main memory !! data-sort-type=number | System memory B/W (GB/s) !! data-sort-type=number | Memory B/W per CPU (GB/s)

|-

| SX-1E

  • NEC GLobal HPC
  • NEC Japan HPC
  • NEC Aurora Web Forums
  • NEC SX Vector Supercomputer