All other potential causes aside, including the likely most-relevant of motherboard companies exceeding recommended defaults for power delivery: Running a cooling solution good for less than the TDP (which is NOT the max power, which tends to be about 30% higher than the TDP on these) is frankly extremely dumb. I've seen x950 processors of every generation pull at least double that on extreme workloads. I think it speaks to them being a bit clueless that they did not manually lower the thermal limits. You can cut the power and thermal limits by wild amounts and barely lose 15% multicore performance.
