The TLB lookup is combinational -- it evaluates in the same half-cycle as the limit check, requiring no additional clock. The common case (TLB hit, no page boundary crossing) adds zero overhead to a memory access. This is why the Segment Descriptor Cache and Page Cache (TLB) together occupy such substantial die area -- they are the fast path that makes protected mode competitive with real mode.
Struggles in low light
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explored some other intriguing opportunities, like the very first production
According to a report in TechCrunch, apparently confirmed by locals who spotted the vehicles in their area, Waymo is currently conducting test drives in both cities.