Everything from the Core i5-13600K and above rated for more than 65W base power, including i7 and i9 65W chips, is affected. That means T-class parts should be fine, as well as vanilla models like the Core i5-14600, but popular unlocked K-class processors are impacted. There are also reports of problems extending to server and laptop parts.
Intel has a microcode fix that has begun rolling out via BIOS updates. It supposedly targets the root cause, but if your CPU has already showed problems, there’s no fix other than replacing it. Intel isn’t issuing a recall, but I can smell the class action lawsuits. However, it has extended warranty support on the affected CPUs by two years. The official statement reads, in part: “Intel’s current analysis finds there is a significant increase to the minimum operating voltage (Vmin) across multiple cores on affected processors due to elevated voltages. Elevated voltage events can accumulate over time and contribute to the increase in Vmin for the processor. The latest microcode update (0x129) will limit voltage requests above 1.55V as a preventative mitigation for processors not experiencing instability symptoms.”