Update 7 Aug: Waiting for similar condition to test again. Setting case fans to 100% made them a bit more loud but still totally fine under such load. Also by some reason default profile for CPU fan was set to 100% at 85C. Changed it to around 80C. After that Prime 95 CPU was 69C, vCore MOSFETS 54C. Case fans 1200RPM, CPU fan 2571. If I put CPU fan to 100% as well then CPU temp changes to around 68C and continue to drop slowly and vCore MOSFETS dropped to 53C. I cannot hear CPU fan even at 100% because case fans are noisier. Subjectively it is a bit hotter in my room that first time. I don't have any