Running cinerbench causes the CPU to reach 100 degrees.
Running cinerbench causes the CPU to reach 100 degrees.
Hello! It seems like you've done everything possible but your CPU reaches 100°C in just a few seconds. After updating the system—CPU, motherboard, and RAM—I switched to a Noctua NH-D15S cooler. The issue persists. I've applied three different thermal pastes and adjusted the cooler orientation in various ways. I've also set GPU fans to full speed and experimented with chassis configurations, including both closed and open panels. I attempted to increase chassis fan speeds from 0 to 100%. It's possible the CPU was damaged during the initial overheating and now it's not functioning properly, despite still showing good idle performance at 32°C. The chassis fans are controlled via the built-in controller, but when I tried connecting them to FAN_1 and CPU_OPT, all fans spun without any meaningful change. I downloaded a fan control tool, but it only detected CPU and GPU fans. I'm using Intel ETU for monitoring, and the system isn't overclocked. The setup details are as follows: OS is Windows 10 (upgradable to 11), motherboard is Asus Prime Z790-P, CPU is i9 12900K, GPU is Gigabyte RTX3080, RAM is 32GB DDR5 6400MHz, power supply Corsair RM750X, chassis uses NZXT Noctis 450 ROG cooler, and the cooler has three fans: front intake 120mm, back exhaust 150mm, and top exhaust 120mm.
Understanding the package's power during testing helps explain the issue. The board might be exceeding Intel's recommended limits. HWiNFO provides the necessary statistics.
This processor needs a solid 280mm AIO or higher. The Noctua NH-D15S isn't powerful enough, even with the LGA1700 socket added.
The reading at 1.35 volts under load looks elevated; however, your system’s power output seems reasonable. On a similar i7-13700KF (same core count as your 12900k), it would reach about 80°C during a single pass CBR23, peaking near 241W. Under load it drops to 1.26V. It features a 360mm AIO quiet profile.
Thank you for your responses. I’ll rotate the cooler so the front is now facing back and install the rear exhaust fan on my CPU cooler using a cat strangeling device to check if it improves things. If that doesn’t help, I’ll try adjusting the CPU settings in BIOS, and if nothing works, I’ll purchase an Nh-d15 as a homemade alternative—it might not be as effective as buying one.