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08-07-2020 06:29 PM #1New ROGer Array
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- Jul 2019
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i9-9900 (non K) has AVX -1 -- can't find AVX in BIOS
I have an i9-9900 (non K) running on my ROG STRIX Z370-i motherboard. Whenever I run an all-core work load that doesn't have AVX instructions (e.g., Cinebench R15), the CPU boosts to 4.6 GHz as it should. Whenever I run an all-core workload with AVX instructions (e.g., Cinebench R20 or Handbrake), the CPU will only boost to 4.5 GHz. I've used the Intel Extreme Tuning Utility to verify that an AVX -1 is being applied (although, it is grayed out so I can't change it).
I've looked through the UEFI BIOS pages from top to bottom, and I cannot find anything mentioning the AVX offset. I have the latest version of the BIOS installed (2401, dated 7/12/2019). Is there some other setting I need to change in the BIOS that will expose the AVX offset?
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08-23-2020 01:44 PM #2ROG Guru: Orange Belt Array XYchromosone PC Specs
XYchromosone PC Specs Motherboard ASUS Maximux XI Extreme [BIOS 1602] Processor i9 9900KS Memory (part number) G.Skill Trident Z RGB CL17 3600MHz 32GB [4x8] Graphics Card #1 ASUS ROG Strix Gaming GTX 1080Ti 11GB Monitor AOC AGON AG271QG 27" 144Hz [165Hz OC] Storage #1 2 X Samsung 970 Pro NVMe 1TB M.2 SSD [DIMM.2_1+ DIMM.2_2] Storage #2 Samsung 850 Evo SSD 500GB SATA 3 CPU Cooler Thermaltake Floe Riing 360 Premium AIO Case Fractal Design Define R6 Black Power Supply Corsair AX1600i Keyboard RAZER Blackwidow X Tournament Chroma Mouse RAZER Lancehead [ambidextrous] Chroma Headset Sennheiser RS165 Wireless Headset/Speakers Sennheiser CX 100 inner ear headphones OS Windows 10 Pro x64 + Ubuntu Studio 20.04 Network Router ASUS DSL-AC68U
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If memory serves me, the BIOS omits AVX tweaking on non-K CPUs you need an unlocked CPU to be able to adjust AVX and CPU multiplier etc.
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