Monday, December 12, 2022

Intel Meltdown & Spectre microcode patch performance degradation

Performance comparison before and after applying BIOS update for "Update CPU microcode 0xC2 for Intel-SA-00088 (Meltdown & Spectre) speculative execution side-channel vulnerabilities.".

Tests are made with Geekbench 5 (only CPU, no GPU tested in this case). The CPU is Intel Core i7-6700HQ.

BIOS American Megatrends Inc. E17A1IMS.10C:

  • Run 1 | Run 2
  • Single-Core Score: 802
  • Multi-Core Score: 3163

BIOS American Megatrends Inc. E17A1IMS.10E:

  • Run 3 | Run 4
  • Single-Core Score: 790
  • Multi-Core Score: 2890
Performance degradation (best scores):
  • Single-Core degradation: 1.5%
  • Multi-Core degradation: 8.63%

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