3900x, unclear about interpreting PPT/CPU Power, TDC—whether cooler and EDC are necessary.
3900x, unclear about interpreting PPT/CPU Power, TDC—whether cooler and EDC are necessary.
Hey, let's go through this together. You're planning to build a PC focused on CPU performance, right? You've got everything set up and are running tests to see how it holds up under load.
First off, your setup sounds solid. You've installed all updates, enabled XMP for RAM, and you're using Ryzen Master with the right settings. The temperatures you mentioned—81-82°C—is actually quite high for sustained heavy workloads, especially if you're pushing 12 hours a day. That's a good sign your cooling is handling it, but you might want to double-check the fan speeds and ensure the case isn't too tight.
The power metrics look a bit concerning:
- CPU Power: 105W
- TDC: 87-90% at 95A
- EDC: 94-97% at 140A
These numbers suggest your CPU is being pushed hard, which could lead to thermal throttling or even long-term damage if not managed properly. The SOC power is only 20W, which is decent, but sustained high loads can still stress components.
Regarding the PSU, an EVGA 650 GQ should handle it unless you're running very intensive tasks for extended periods.
Given your goals and the current readings, adding an NH-D15 might not be necessary unless you're aiming for maximum performance or future-proofing. If you're okay with the current setup, you can likely run safely for a few more years, especially since you mentioned you won't need it for 10 years. Just keep monitoring temperatures and consider improving airflow if needed.
If you want to stay within safe limits, focus on better cooling solutions and maybe reduce workload intensity. Let me know if you'd like tips on optimizing your build!
Everything appears normal from the read. The PPT focuses on power tracking—peak wattage equals thermal design current. Ampere that the VRM can supply depends on thermal conditions; EDC sets the electrical design limit. The VRM’s maximum peak amps can spike, but this doesn’t guarantee the CPU will make use of the extra capacity you’ve allocated. It really hinges on the voltage applied during heavy load situations. These are all motherboard-specific details tailored to your power solution. No concerns here.
Ryzen CPUs rely on three key settings for Precision Boost: PPT, TDC, and EDC. These aren't safety thresholds like voltage; you can adjust them beyond what’s shown in Ryzen Master—often setting them all to 1000 won’t hurt much, except possibly accelerating thermal limits and reducing boosting capacity. For more details on PPT and other restrictions, check the Reddit discussions here: https://en.wikichip.org/wiki/amd/pbo. As long as your CPU voltage and clock speed remain default, your Ryzen processor stays safe. There’s a lot happening in the background to maximize performance while maintaining stability.
Your CPU was overheating significantly before you installed the case airflow solution. From what I've learned, that level of heat isn't ideal. Beyond reducing noise, does an expensive liquid cooler like the NH-D15s offer any advantages? If you're not planning to overclock and don’t need extra speed, the benefits might be limited.
Your maximum temperatures after adding case fans reached 81-82°C, which is excellent. During CPU stress tests, your temps were 85-87°C with two fans inside and one outside—possibly lower if more space allowed better airflow. I’m not sure about the specifics of choosing an expensive cooler like NH D15S versus a cheaper option, since I’ve used the cheaper one with my 3900X for years. A cooler chip helps the CPU run hotter before it reaches its thermal limits, which matters because 7nm Ryzen chips are tougher to cool. They don’t generate much heat on their own, but many small cores in a tight space make it harder. Besides performance gains, this cooler is among the best in cooling power and is very user-friendly. It was a bit tricky at first, but using both a second screwdriver and the Allen wrench made it much easier.