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Intel Core i9 9900K Spectre Mitigation Benchmarks: One of the benefits with the recently launched Core i9 9900K is hardware-based mitigations for Meltdown and L1TF/Foreshadow vulnerabilities. but mitigations are still needed for the other Spectre vulnerabilities. In this article is a look at the performance impact of still needing generic Retpolines via IBPB IBRS firmware for Spectre V2 and Speculative Store Bypass disabling (SSBD) for Spectre V4.

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