If I remember correctly my first PC I got as a kid in the 90s had an 6x86 in it. The nostalgia is strong with this one.
The company's marketing strategy was never great before the National Semiconductor merger, and AMD would repeat the same mistakes with Athlon and Sempron processors in the 2000s.
These were labeled as to indicate that they were faster than an Intel processor, while operating at a lower clock speed, but that didn't always translate well in benchmarks or real-world performance tests. AMD dropped that scheme, but suffice to say, things remain a bit confusing to this day.