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== Pentium multiplier ==
Intel's [[Pentium]] microprocessor uses a radix-8 variant of Booth's algorithm in its 64-bit hardware multiplier. Because of the way it implements the radix-8 multiplication, it needs a complex auxiliary circuit to perform the special case of multiplication by 3 in a way that minimizes latency, combining the use of [[carry lookahead]], [[Kogge-Stone addition]], and [[carry-select addition]].<ref>{{Cite web |first=Ken|last=Shirriff|title=The Pentium contains a complicated circuit to multiply by three |url=https://www.righto.com/2025/03/pentium-multiplier-adder-reverse-engineered.html |access-date=2025-03-03|website=righto.com}}</ref>
== See also ==
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