Substantially all modern high performance microprocessors, including Ryzen, were found to be vulnerable to a new category of speculative execution vulnerabilities.
The vulnerabilities can be mitigated without hardware changes via microcode updates or operating system workarounds,
but the mitigations incur a performance penalty.[149] AMD Ryzen/Epyc suffer a zero to nine percent penalty from the mitigations depending on workload
Substantially all modern high performance microprocessors, including Ryzen, were found to be vulnerable to a new category of speculative execution vulnerabilities.
The vulnerabilities can be mitigated without hardware changes via microcode updates or operating system workarounds,
but the mitigations incur a performance penalty.[149] AMD Ryzen/Epyc suffer a zero to nine percent penalty from the mitigations depending on workload
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