Intel I9-12900 not hitting boost frequency – issue resolved.
Intel I9-12900 not hitting boost frequency – issue resolved.
Fixed: Adjusted Multicore Enhancement off in BIOS, single core speeds now reach 5.1ghz. This change could be done by keeping MCE active and turning on C6/C7 C States in the BIOS. I'm struggling to understand this CPU setup, so please help clarify the architecture. I'm testing a used 12900 nonk for a friend, installed on a Gigabyte Z690 UD DDR4 board with 32GB 3600MHz Fury RAM and an 800W 80plus gold Bloodpump power supply. The CPU is cooled by my Nzxt Kraken x52, so ample cooling should be available. I'm running the High Performance power plan in Windows 11 on a brand new system. Unfortunately, none of the P Cores are hitting the advertised 5.1ghz or the E Cores reaching 3.8ghz. Using Intel Extreme Tuning Utility, I see the ratios are capped at 4x51 and 4x50 on the P cores (I can't modify those on the nonk). The E cores are locked at 38: In the Gigabyte Bios, Multicore Enhancement is enabled. Power limits are removed, Turbo Boost is on, and Turbo 3.0 is active, so the CPU should exceed 200W during Prime95 tests. However, P cores never go above 4.65ghz and E cores stay below 3.56. I've tried Star Citizen, NFS Unbound, BF2042, Cyberpunk 2077. Can anyone explain how to achieve these speeds? Do I need a K variant for this result?
. It's completely fine. The 4.6ghz performance core is the standard load boost speed for all cores. Reaching 5.1ghz means just one core is fully loaded while the rest stay below 5%.
This fake 750w PSU that claims to be a 800w sticker version is definitely not beneficial . It's completely fine. The 4.6ghz performance core is the standard load boost speed for all cores. Reaching 5.1ghz means just one core is fully loaded while the rest stay below 5%.
The headline maximum turbo speed applies to one active core only. All other cores will operate at lower speeds. Turbo performance depends on available power, current, and heat. Aim for peak performance only when you're within all limits. Don't assume every core stays at full turbo continuously unless you're pushing it. To check actual speeds, use tools like hwinfo64 to see the highest clocks. For testing, run a simple single-thread stress test such as CPU-Z's built-in benchmark, which might reveal the limits. Light workloads can also help achieve higher readings. On my 7920X, with a 4.4 GHz max turbo, I observed it reaching near 4.4 GHz within seconds while typing and a YouTube video played elsewhere. My typical game clocks hover around 3.8 GHz.
Xpers_Gaming
09-22-2021, 06:47 PM #6Consider the K and apply manual adjustments. Modern mobile systems don’t typically offer a true multi-core boost, but you might achieve results with K. If unavailable, the only option is to lower power settings and let the device handle the rest. This isn’t considered overclocking but is permitted technically.
LeftAndRight
09-24-2021, 12:48 AM #7Thanks for the idea, I ran the CPUz benchmark and set one core to pinning, but it still shows all cores at 4.65 and never reaches 5.1. Not even in the single-thread test.
I'm wondering if missing the 5.1 boost across all cores affects my gaming performance noticeably. In the TechPowerUp review of the 7800x3d, this chip only lags by 4%, which is currently the fastest gaming CPU for 4K. I’m comfortable with a 4.65GHz clock speed, but I want to know if this trend is typical.
endergirl08
10-13-2021, 05:38 AM #10There are issues because even with intentional stress on one core, other background processes still consume power, which can prevent it from staying there. It should eventually settle down. Running all cores at 5.1 GHz is unusual and likely not ideal. The overall turbo clock should be reduced, but as long as you're near that setting it functions properly. Keep an eye on power consumption while it runs. If it stays low (<100W), it's probably working as intended.