Unfortunately the Micro cooler is too weak to adequately cool higher frequency and higher tdp cpu. You see Dell validates i5-4590, i7-4770/4790 in 9020 tower and sff but not Micro. Micro has a too wimpy heatsink cooler for standard desktop cpu. Consider the Micro as a quasi laptop model. If you really like 9020 might as well switch to tower or sff which are inexpensive now.
PS Micro will boot with standard 84w cpu running above 3 GHz but cpu fan will be noisy loud all the time and cpu temp may be very high all the time, so not practical.
redxps630
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Posted October 24th, 2022 11:00
https://www.ebay.com/itm/Intel-Core-i5-4570T-SR1CA-2-90GHz-4MB-Socket-LGA1150-CPU-Processor/125546813376?