That’s definitely a concern without VRM cooling if used for prolonged heavy utilization. It really depends on what the use will be for. For example, if using heavy multi-core workloads, a 65W CPU is strongly recommended for that VRM. Just curious where you are seeing it struggle with the 12400F? It’s difficult in the market right now with the new Core Ultra details in December, and the remainder of the 14th Gen coming out after the New Year. For long term safe VRM, a 13500 would be a safe solution, which im sure the 14500 will have too, however if not using heavy CPU workloads, the 13600k will work fine as long as good case and CPU cooling, and using the Balanced Power plan (not high performance) if using Windows. Depending on GPU if gaming, 15 to 20 FPS improvement and 1.8x overall multi-core with a 13500. With a 13600k(f) +~ 30fps and 2x faster multi-core performance. I would not go with a 12600k as the 13500 is a far more efficient CPU. The boost power of a 13600k(f) will be throttled by the VRM(heat), but according to MSI, it is compatible with much higher CPUs. If doing heavy workloads for prolonged periods of time, 13500 or 14500(when released). If not heavy core workloads, 13600k(f) with balanced windows power plan, and no stress testing or benchmarks.