i7 9750H issue on Lenovo P53 device
i7 9750H issue on Lenovo P53 device
We’re discussing a laptop model, not a desktop. The cooling system design prevents replacement. A paste upgrade might slightly boost performance, but the cooling power from the unit won’t increase much. You’re asking about three things: first, how much extra cooling comes from changing paste quality—this depends on the situation; second, how much wattage reduction results from undervolting—also variable; third, how much room remains for overclocking depends on the first two factors, which are uncertain. The problem here is that systems like this often have built-in slop due to differences in CPU capacity and cooler compatibility. If you have a high-performance chip, strong thermal contact with your new paste, and you manage undervolt effectively, there might be some potential for overclocking. However, because so many variables are involved, making an accurate prediction is really not possible.
I have a clearer idea of what you're seeking. You're looking for insights from those who have worked with undervolting. Are you wondering whether the CPU can handle a small overclock after being undervolted, and if the temperature drop is sufficient to allow it to run? The voltage level you mentioned (~100mV) is often discussed in forums.
It’s possible to achieve a more precise figure by consulting someone with prior experience. The typical approach involves manufacturers dealing with inconsistent product quality, so they anticipate the lowest possible performance and design strategies accordingly. This introduces some flexibility that can be adjusted individually. There might even be significant room for improvement. The main challenge lies in the unpredictable nature of the slop you can actually capture. For example, a perfectly flat cooler or an exceptionally efficient heat sink won’t yield consistent results if your chip has irregularities. You’ll likely see some benefit, but it may not be sufficient for your goals. You might find better results by connecting with others who have achieved similar improvements on the same hardware. I’m afraid I can only share general advice. Your question seems to ask for a specific path forward. That detail should probably be located in the guides within various forum sections, at least conceptually. In reality, I find overclocking databases quite useful. If they exist, you might want to start with an i7 9750h guide before diving into overclocking concerns. Generally, undervolting can help lower heat and allow the CPU to run faster without further adjustments. A YouTube video covering undervolting could be useful. It’s unclear how much it will assist, but a more targeted post later might be better. I recommend beginning with an undervolt test before considering overclocking.
I explored some throttlestop tutorials and tested them on my laptop. Adjusting the CPU and cache with the same offset caused a black screen at -170mV, so I settled on -150.4. Cinebench gave inconsistent scores (100 to 200 points) even with the same configuration, indicating some progress (latest score 2822). For a stress test using aida64, after about 5 minutes the system remained stable despite thermal throttling, though it still experienced heat-related slowdowns. The CPU limits appear to show "vr current" and related labels in the column. What are these limits and how might they be addressed?