Cinebench R23 as “AVX-Light” reference
As if there weren’t enough data points already, I also tested Cinebench R23 with the most noteworthy configurations. Maybe we can also observe the “clock stretching” or the drop in performance with a static clock here. As you know, the latest version of Cinebench also uses AVX instruction sets, but not nearly as demanding and with significantly less power consumption.
“Stock” the ASRock B650I only clocks the CPU to 4.9 GHz on all cores, while the Asus X670E boosts all cores up to 5.1 GHz. Accordingly, the different boards are not 1:1 comparable with each other. However, we are mainly interested in the comparison of dynamic to static clock on the same board or between BIOS versions and this still works:
In fact, for Cinebench R23 I can’t measure any drop in performance with static OC in the BIOS versions with AGESA 1.2.0.2a, Asus and ASRock. All configs perform about the same here. However, from BIOS 2604 with AGESA 1.2.0.2b on the X670E Gene, a drop in performance or “clock stretching” can also be observed in Cinebench at the same clock rate, as with the y-cruncher. Not nearly as strong, but also reproducible.
- 1 - Test setup and Ryzen 9 7950X as baseline
- 2 - BIOS 2602 – Asus Crosshair X670E Gene
- 3 - Clock Streching or AVX throttling and workarounds (LN2 mode)
- 4 - The "Fix" BIOS 0029 – Asus Crosshair X670E Gene
- 5 - ASRock B650I Lightning WiFi for comparison
- 6 - BIOSes 2604 and 2506 – Asus Crosshair X670E Gene
- 7 - X3D-Cache confuses y-cruncher (developer)
- 8 - Cinebench R23 with "AVX-Light" as reference
- 9 - Summary and many unanswered questions
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