Okay, bro, but can you ELI5 the three seashells?
Back in the day, AMD largely was just a cheap clone of Intel, for decades, with about 3% market share for Intel processors. Then came the transition to a 64 bit architecture, that would allow computers the natively address more then 4GB of RAM. Intel tried to use that transition to completely dominate the market with their Itanium solution, that was 64 bit only, requiring all software, including OS, to be updated. AMD built Opteron, a 64 bit chip that had 32 bit backwards compatibility. EVERYONE balked at having to fork their code to support legacy 32 and new 64. While with AMD it would support both old programs AND new. EVERYONE decided to go AMD for 64 because they would not have to re-write everything.
AMD shot up to 40% market share, and Intel was dying. Eventually Intel relented, and tried to add backwards compatibility to Itanium 64. But Microsoft told them to pound sand, and never made a 32 bit Itanium OS.
But Intel lucked out in that Itanium ran too hot for laptops, so Intel Israel had cloned AMD for that market as Intel and AMD had a deal to share tech, which allowed AMD to clone Intel in the first place. Intel then adopted this clone as their 64 bit solution going forward. Then Intel used their massive production capacity, die shrink and some illegal contracts with OEM's to drive AMD back down to 3-4% and AMD stock price down to $3. AMD then was in danger of BK, but saved by winning some billion dollar lawsuits vs. Intel.
But today, Intel is back on the ropes, as they shut down all their USA factories and shipped them overseas, and are getting eaten alive by TSMC, ARM, Samsung, and AMD, among others. And Intel are behind them on yields and die shrink. Intel again, missed the boat most recently on mobile, when they tried, once again to monopolize that market.
AMD is currently winning because they developed a processor with graphics on the chip after they bought ATI. And having that is miles better for AI. Intel graphics is terrible.
Long story short, Microsoft OS identifies the processor as AMD 64 architecture, because it is.
