content: I would think that SPARC is not vulnerable, but don't know that for sure. SPARC is a completely different architecture from the X86 generational line of processors. From what I've read so far, it looks like these vulnerabilities are limited to these types of processors. AMD however says their processors are not vulnerable. As to your other question, SPARC, Power and IA-64 never went away. There is tons of hardware running non-Intel processors around the world.