The Cray EL90 series was an air-cooled vector processor supercomputer first sold by Cray Research in 1993. The EL90 series evolved from the Cray Y-MP EL minisupercomputer, and is compatible with Y-MP software, running the same UNICOS operating system. The range comprised three models:

• EL92, with up to two processors and 64 megawords (512 MB) of DRAM in a deskside chassis: dimensions 42×23.5×26 inches or 1050×600×670 mm (height × width × depth) and 380 lb/172 kg in weight.
• EL94, with up to four processors and 64 megawords (512 MB) of DRAM, in the same cabinet as the EL92.
• EL98, a revised Y-MP EL with up to eight processors and 256 megawords (2 GB) of DRAM in a Y-MP EL-style cabinet (62×50×32 inches or 2010×1270×810 mm, 1400 lb/635 kg in weight).

The EL90 series Input/Output Subsystem (IOS) was based on the VMEbus and a Heurikon HK68 Motorola 68000-based processor board (or IOP). The IOP also provided the system's serial console. All EL90 models could be powered from regular mains power.^{[citation needed]}

The EL90 series was superseded by the Cray J90 series.

• Fred Gannett's Cray FAQ
  • Cray EL boot sequence

v t e Cray computers
Cray Research	Cray-1 Cray X-MP Cray-2 Cray Y-MP Cray XMS Cray Y-MP EL Cray C90 Cray EL90 Cray T3D Cray J90 Cray T90 Cray T3E Cray SV1
Cray Computer Corp.	Cray-3 Cray-3/SSS Cray-4
Cray Research Superservers	Cray APP Cray S-MP Cray CS6400
Cray Inc.	Cray SX-6 Cray MTA-2 Cray Red Storm Cray X1 Cray XT3 Cray XD1 Cray XT4 Cray XMT Cray XT5 Cray CX1 Cray XT6 Cray XE6 Cray CX1000 Cray XK6 Cray XK7 Cray XC30 Cray XC40 Cray XC50 Urika-XA Urika-GD