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I guess the same can be said for AMD's x86_64 CPU's? Still it's fair to compare them to Intel x86_64 CPU's. The big difference is that ARM has something like a
by dep_b 8y ago
I guess the same can be said for AMD's x86_64 CPU's? Still it's fair to compare them to Intel x86_64 CPU's. The big difference is that ARM has something like a reference design where Intel doesn't want to share anything if they don't have to.
- rhencke 8y agoIt's actually the other way around, humorously enough. x86_64 is also known as AMD64, and for good reason. AMD created the core 64-bit x86 design, but, more importantly, they have patents to key pieces of the ISA required to legally implement it. So, long story short, it is actually AMD who didn't have to share anything with Intel if they did not want to - Intel's 64-bit x86 CPUs are fundamentally AMD64-compatible CPUs. The most interesting thing is it resulted in a bit of an interesting legal relationship between the two. Intel licenced AMD the required rights to produce x86-compatible processors. AMD, in turn, ended up licensing Intel the IP required for Intel to create x86_64 chips. Sources: https://en.m.wikipedia.org/wiki/X86-64#Licensing https://en.m.wikipedia.org/wiki/X86-64#Licensing https://www.sec.gov/Archives/edgar/data/2488/000119312509236705/dex102.htm https://www.sec.gov/Archives/edgar/data/2488/000119312509236...
- dep_b 8y agoWell AMD might want to sell the 64 part to you, but Intel doesn't want anybody having the x86 part if they can prevent it.