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Elbrus (Эльбрус) is the name (after the mountain) of a series of Soviet supercomputer systems developed by Elbrus MCST and/or ITMiVT since the 1970s. There are other microprocessors from MCST, that are compatible with U.S.-developed SPARC architecture.

• Elbrus 1 (1973) was the first Soviet integrated circuit computer,^{[citation needed]} and the first fourth generation Soviet computer, developed by Vsevolod Burtsev. Used tag-based architecture and ALGOL as system language like the Burroughs large systems. It was used by the Defense Ministry. A side development was an update of the 1965 BESM-6 as Elbrus-1K2.
• Elbrus 2 (1977) was a 10-processor computer, considered the first Soviet supercomputer, with superscalar RISC processors. Re-implementation of the Elbrus 1 architecture with the fast ECL chips. It was used in the space program, nuclear weapons research, and defense systems.
• Elbrus 3 (1986) was a 16-processor computer developed by Boris Babaian. Differing completely from the architecture of both Elbrus 1 and Elbrus 2, it employed VLIW architecture.
• Elbrus 2000 or E2K was a vaporware project to implement Elbrus 3 architecture as a microprocessor.
• The current SPARC-like systems have been developed from 1996 with the Elbrus-90micro and the company was formed under an agreement with Sun Microsystems in 1997. The company reported in 1998 the development of an innovative EPIC processor dubbed E2K by a team under Boris Babaian.
• Elbrus-3M. One processor computer. It was used to test the new, VLIW/EPIC (Very Long Instruction Word/Explicitly Parallel Instruction Computing) type processor "Elbrus-3M". This processor is based on MCST/Elbrus E2K (or Elbrus 2000) architecture. The processor "Elbrus-3M" (300 Mhz, power consumption < 5 W) is fabricated with 0.13 micron technology. It has 50 millions of transistors and it executes up to 23 instructions per clock cycle. Performance: 23.7 GIPS/2.4 GFLOPS (64 bits), 4.8 GFLOPS (32 bits).
• Elbrus-3M1 is the latest computer of MCST/Elbrus. It has two processors "Elbrus-3M". It can work in parallel (using high velocity connections) with others Elbrus computers. So, the Elbrus-3M1 could be used to build super computers.
• Elbrus-3S will be the next computer of MCST/Elbrus. It will have four VLIW/EPIC type processors "Elbrus-S" (500 Mhz, 0.09 micron technology, system on a chip).

• Boris Babaian, Elbrus-3, Elbrus 2000 and Elbrus 3M chief architect
• List of Soviet computer systems

• Elbrus website in Russian
• Elbrus E2K
• "Elbrus" processor info (russian)
• "Elbrus-3M1" computer info (russian)
• (I) Power Point document "Elbrus-3M1"
• (II) Power Point document "Elbrus-3M1"
• (I) Power Point document "Elbrus-3S"
• (II) Power Point document "Elbrus-3S"