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However, code density is less for RISC, and that was very important in the 70s and early 80s when memory was not so large. Even now, better density means better performance, since you'll hit the faster caches more often. This article is also wrong about 3D Now! In reality, 3D Now! Games, or other software that could use 3D Now! It was relatively small to implement, and in the correct workloads could show dramatic improvements.
But, of course, almost no one used it. The remarks about the dual bus are inaccurate. The reason was that motherboard bus speeds were not able to keep up with microprocessors speeds starting with the DX2. Intel suffered the much slower bus speed to the L2 cache on the Pentium and Pentium MMX, but moved the L2 cache on the same processor package but not on the same die with the Pentium Pro.
The purpose of having the separate buses was that one could access the L2 cache at a much higher speed; it wasn't limited to the 66 MHz bus speed of the motherboard.
The Pentium Pro was never intended to be mainstream, and was too expensive, so Intel moved the L2 cache onto the Slot 1 cartridge, and ran it at half bus speed, which in any case was still much faster than the memory bus. That was the main reason they went to the two buses. That was as far as I bothered to read this. It's a pity people can't actually do fact checking when they write books, and make up weird stories that only have a passing resemblance to reality.
And then act like someone winning this misinformation is lucky. Good grief, what a perverse world Yes you are correct on the bus issue. You can patent and trademark a slot design.
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