The Ryzen 7 3800X runs at a clock speed of 3.8 GHz.
The Ryzen 7 3800X runs at a clock speed of 3.8 GHz.
I've run some benchmarks using the Ryzen 7 3800x. In idle mode, NZXT displays the CPU clock peaking near 4500Mhz. Under load, the clock doesn't exceed 4150Mhz. I'm not very technical, but shouldn't the processor reach its maximum under stress? Why isn't it faster? The value stays below 4.2GHz in my tests. It seems counterintuitive to have such a low peak when browsing or checking emails. It doesn't make sense. In all my trials, the clock stays under 4.2GHz. It just doesn't go higher. I turned on PBO in the BIOS, which actually increased it to around 4Ghz under stress. But then I couldn't boot into BIOS on an X570 Gigabyte Aorus Pro WiFi motherboard. I had to switch to Windows Recovery and restart to access BIOS and disable that unnecessary function. I won't even attempt to overclock the CPU because I know it will underperform compared to the default settings. Someone more experienced should clarify why the clock doesn't reach 4.5GHz during stress—it seems to contradict its intended purpose. Thanks for your time.
You're asking about the limitations of PBO's performance scaling. It won't raise all cores to 4.5Ghz at full capacity, which would match an all-core 4.5Ghz configuration. Instead, it will enhance a few cores as high as possible based on workload details like temperature, voltage, and stress. The boost is adjusted accordingly for each situation.
The issue is why I don’t notice any core running at 4.5 GHz, yet it appears boosted to 4.5 Gzh during idle. I’m not sure if you’re just trying to protect something that isn’t working or if I’m misunderstanding the language. In short, the CPU doesn’t reach 4.5 GHz under load when it’s actually needed. As I mentioned, it rarely goes above 4.1 GHz. How can I make this more obvious? I suspect a faulty unit and I’m prepared to return every one that fails to hit 4.5 under stress. Why do they promote misleading information? Just say it’s around 4.15 GHz and it’s fine.
Artificial stress tests aim to push every core to its limit. The 3800x can receive a full boost across all cores around 4.1. In real use, like browsing, only 1 or 2 cores are active. The system can raise those to 4.5 while keeping others at 3.6 or similar. You won’t notice 4.5 in stress tests unless you set it up to load just one core.
I don't believe the nzxt software actually reads CPU stats accurately, which was true when the new AMD processors launched. I’d prefer a tool like CPUID hardware monitor to check real performance. It’s also important to have the latest BIOS for your motherboard and the most recent drivers from AMD. Check out this custom power plan here: https://www.guru3d.com/files-details/1us...nload.html. With updated BIOS, latest drivers, and this power plan, my 3800x managed to reach 4.5+ on all cores—though not simultaneously across every core. Probably only a few cores hit that level beforehand. Also, ensure Windows is fully updated; the latest updates around the end of last year included improvements for AMD CPUs.
This approach consumes a lot of power. Running the clock down when more cores are available is more efficient because you have additional processing units to handle the workload. By reducing the speed, AMD can reach its energy goals and the CPU generates less heat. Each "turbo boost" works this way. Also, if a CPU claims a higher boost clock, it usually affects just one core—sometimes two—but typically only one. Zen 2 uses a strict "wake to sleep" method: the core activates, runs the task, then goes back to sleep, boosting as high as possible during that pause. This is why you notice the clock rising. Your limits are mainly the motherboard or cooling system. Or both. If you want more performance, keep temperatures low. A 10°C rise can drop your speed by 25–50MHz. https://www.gamersnexus.net/guides/3491-...ks-auto-oc PBO extends the official power, current and thermal limits of the processor. The reported clock might be lower, but it would be more stable across all cores. Don’t assume you don’t understand a technology just because you’re unfamiliar with it. If you’ve seen the Zen 2 presentation or read discussions from real AMD engineers/users on Reddit, you’ll grasp how the stock PB2 algorithm functions and how PBO modifies it. Forcing recovery is up to you. Resetting the CMOS would have been better. It won’t. Trying to maintain a fixed frequency instead of letting PBO vary per core will be much more effective. My 3950X reached 4.7GHz on two cores, boosted to about 4.2–4.3GHz across all cores and achieved a 9100 score on CB R20. With a steady 4.2GHz, it scored 9800cb—about a 700cb improvement by settling for a reliable speed rather than chasing every microsecond.
I need this setup to handle heavy tasks smoothly—3D rendering or complex calculations without lag. The performance isn’t up to expectations, especially when multitasking. Even at idle, temperatures stay high, around 50-60°C. This is expected for a Ryzen 2nd gen CPU, but it’s not meeting the advertised speed. The custom power plan doesn’t support CPPC, and the default settings are better for stability.