Will the real instruction set please stand up?
The Elbrus 4c used in the PCs and servers is said to support two instruction sets: very long instruction word and SPARC. It's also said to be capable of x86 emulation, and to run Linux natively, after one performs binary translation.
This is confusing... what is the real instruction set in it, homegrown, SPARC, x86 or ARM? After googling links for Elbrus 4c (hampered by my lack of Russian skillz), the most likely answer seems the homegrown VLIW, with some emulation support for x86. Sounds just like the plan that worked so splendidly for Intel Itanium... The native VLIW code might not be too slow, despite the low clock speed, provided there is a good compiler, but then all software has to be ported, so it is likely most users (if any...) will use it as a slow x86 replacement.
Elbrus by the way seems to also have been the name for a line of Soviet mainframes.