It seems the i9 13900 is not performing well.
It seems the i9 13900 is not performing well.
The HK mobile CPUs are K units. The scaling factor must remain unrestricted. The CPUZ specification section indicates this as an Intel(0000) ES design. Usually these (0000) models are early prototypes with limited similarity to the final product. Here, the 0xB06A2 CPUID matches the production version, suggesting the chip is physically equivalent to a retail 13900HK. https://www.intel.com/content/www/us/en/...specs.html @Baconbaker5000 At standard configurations, many motherboards assign the long-term PL1 boost ceiling to match the TDP value—only 45 Watts here. This would restrict maximum performance. You can check HWiNFO for actual PL1 and PL2 boost settings. On most systems, it displays both static and dynamic limits, which must be configured correctly. Remove the Disable Controls option in the ThrottleStop TPL interface if you wish to modify these power caps while using Windows. The 13th and 14th generation mobile chips will activate once the limits are increased. Monitor the ThrottleStop Limit Reasons window for any throttling events during Cinebench execution. https://www.techspot.com/downloads/7579-...h-r23.html
It appears the power restrictions are quite high (photo). I spoke with the seller who confirmed checking the limits to ensure they weren’t too restrictive, though I’m not noticing any issues here. I was mostly aware of the potential complications with ES chips and understood the risks, but I didn’t expect this level of difficulty. Fortunately, I can return them if necessary.
Do a return. You were scammed. As I said, that was a lapse in my judgement, this is a scam. Go get a i5-14600K and a cheap motherboard. It'll be a MUCH better experience than this overpriced ewaste. Your CPU is a science fair project, not a real processor. Edited August 7, 2025 by HelpMyComputerIsBroke
I see the power limits are acceptable. Close HWiNFO and attempt ThrottleStop. Access the Limit Reasons window. Identify the red box beneath the CORE column when the CPU is under load and throttling—this could indicate a BD PROCHOT problem. Share screenshots from the FIVR and TPL interfaces. The BIOS may not be configuring the CPU properly.
Thermal shines faintly at the center, EDP OTHER illuminates around the ring.
The ThrottleStop TPL window displays the issue. PROCHOT Offset is configured at 36 and locked. This instructs the CPU to begin thermal throttling once the temperature reaches 64°C (100°C minus 36). The typical default threshold for thermal throttling is 100°C for comparable mobile CPUs. Review the BIOS settings. This adjustment is now secured by the BIOS, requiring modification before startup. If you locate the PROCHOT Offset value in the BIOS, update it from 36 to 0. That should resolve the performance drop you’re experiencing. Another label for this parameter is Tcc Activation Offset. Consider disabling Undervolt Protection if found in the BIOS; it may have been misconfigured. The updated BIOS could be faulty. If you can modify PROCHOT Offset, everything appears normal. If not, installing an older BIOS version might be necessary. The screenshot of Limit Reasons you shared is obstructing the main ThrottleStop window. Opening it should reveal PROCHOT 64°C, confirming the reduced throttling setting.
The adjustment seems to be initialized at zero, as indicated in the provided reference.
It seems the numbering follows a pattern where 0 corresponds to "Auto" (64°C), and higher values map to different ranges. Setting it to 100 would likely shift the limit to 100°C, which aligns with your observation. The activation range beginning at 37°C makes sense, though the current offset is around 36°C. Trying a middle value like 55 could help clarify whether the setting relates to offset or temperature.
BIOS labels this option TCC Activation. It isn't referred to as an Offset. The default value is 100 for TCC Activation. Set it in BIOS to 100 and observe what ThrottleStop indicates. Remove the existing ThrottleStop.INI file before executing ThrottleStop to ensure it interprets the CPU's configured value correctly.