EPIC failure

EPIC failure

Posted Nov 16, 2023 13:06 UTC (Thu) by anton (subscriber, #25547)
In reply to: EPIC failure by paulj
Parent article: The push to save Itanium

What performance cost? Skylake, Kaby Lake, and Coffee Lake are affected, Whiskey Lake, Comet Lake, and Amber Lake with are not. They are all based on the Skylake microarchitecture and have the same IPC, and they have a higher turbo clock rate. Apparently Intel's engineers managed to add the necessay multiplexer for suppressing the invalid speculative result (or however they did it) without increasing the cycle time.

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