Performance stays at 4.7GHz despite 9900K settings
Performance stays at 4.7GHz despite 9900K settings
So here’s the latest update. I spoke with Intel’s tech support team. They explained that as long as the CPU exceeds 3.6ghz, it functions properly, and whether it hits 5ghz hinges on various factors like the silicon quality. They mentioned it could also be influenced by the operating system, software, or BIOS settings. That’s quite intriguing. Intel acknowledged that achieving their advertised speeds in stock mode depends on a bit of luck with the silicon. They clarified this isn’t about overclocking but sticking to the base rates. They recommended checking with ASUS for potential issues with motherboards or drivers, though they seemed unhelpful beyond that. I tried it myself, but after over 20 minutes with a staff member who appeared inexperienced, I lost patience. In short, if you’re thinking about a 9900k, be cautious—it’s likely to end up underperforming compared to its specs.
Ensure MCE is activated and configure Windows for high performance. Also, consider updating the old BIOS to observe changes.
Update your information, reset CMOS, install the latest drivers, verify software functions properly. Monitor temperatures regularly and consider testing tools such as Prime95 or other utilities that enable CPU performance enhancement. If you're not achieving desired speeds, check if your motherboard supports overclocking within its limits. Good luck!
I switched MCE from disabled to auto and set Windows to high perf mode. After that, the CPU increased to 5GHz. When I tested Cinebench, my scores improved but temperatures rose significantly. Each core reached at least the high 60s during the test, with some hitting mid-70s. In my timespy results, my score actually fell despite the boost. I’m unsure if temperature was the issue or possible throttling. Max temperatures stayed below 70°C. It’s strange because before the Windows reinstall I thought MCE was off and it still reached 5GHz, but maybe that wasn’t the case. My temps were much lower before, even at 5GHz. This 9900k is definitely tricky. I’m leaning toward keeping MCE disabled and sticking with around 4.7GHz, especially since gaming is my main reason for buying it. I’ll try it in Battlefield 1 to compare performance and temperatures, and see how it feels. Is MCE really just a way of saying overclocking, or is it more about how these processors handle boost?
MCE usually applies more voltage than needed. The optimal approach is to keep it off and clock your cores manually. You can adjust individual cores (Core 0 is typically the strongest) or set them all at once. This lets you raise some cores higher without increasing voltages much. For instance, cores 0 and 1 could run at 5GHz, 2 and 3 at 4.8GHz, others at 4.6GHz, allowing around 1.360V or less (with some variation). A 70°C rise isn’t huge. The goal is to stay as low as possible; I cap daily heavy work at 85°C. I don’t like high temperatures beyond that, but it’s manageable. Experiment manually—Intel seems more suited for this method.
Intel Turbo Boost 2.0 operates differently than commonly thought. Some tools mistakenly suggest cores can run at separate speeds simultaneously. In reality, the 9900K limits this—each core shares the same boost level. The multiplier depends on active cores, but BIOS settings can’t adjust it per-core. @maizenblue Remove AiSuite and Armoury Crate. The Asus Maximus Hero offers a comprehensive BIOS setup. Share your BIOS adjustments if you need guidance. What outcome matters most? Let someone experienced with your board assist.
I purchased it for gaming, but I also use it for other tasks. Gaming was the reason I chose a high-end CPU instead of a cheaper model. My interest in clock speeds began after noticing sluggish performance in Battlefield 1. I double-checked to confirm VSync wasn’t active, which matched the feeling. FPS dropped slightly compared to my previous 4790k. It was confusing, so I started testing, reinstalling Windows, and troubleshooting. You’re correct about the boost. In HDMonitor, all clocks were fixed at 4.7GHz. Before reinstalling, I saw 5GHz in AI Suite, but after, it never exceeded 4.7. It might be optimized to 4.7GHz per core now thanks to updated drivers instead of fluctuating between cores. My Cinebench and Timespy scores are still low, possibly because I’m reviewing older CPUs before they were grouped together. EDIT: The CPU behaves oddly—even at idle every core stays at 4.7GHz. I’m wondering if AI Suite is overclocking all cores. Right now, with MCE off in BIOS and default settings, it feels like I have a full-core overclock. Since idle performance is consistent at 4.7GHz, I might reinstall it again.