My CPU cooler is Be Quiet! Pure Rock CT500ms is good enough.
Your temp's looking pretty good even at 4 min's on p95, only 76C. Your FIT seems to be happy leaving voltage at 1.325 for 3.9G, which is well above base clock speed. That's pretty good performance for a stock cooler...are you on the stock Wraithe?
Now, if you really want to experiment you could lower voltage a notch or two. BUT ONLY DO IT WITH OFFSET. Dial in a negative offset one or two or two notches, then check this again and compare temps and end voltage with another run like this one. You use offsets because it still leaves the algorithm in control of lowering voltage; setting a manual voltage will over-ride everything and try to keep it at a fixed value.
If you're happy with results then make a Cinebench 20 run both multi-thread and single-thread and compare. You have to check performance as it's easy to lower voltage too much and the processor does something called 'clock compression'. Even though it's reporting similar clock speed it's actually performing worse in benchmark like Cinebench.
Here is 2 videos of the cinebench test.
At this point i would like to thank you for your patience with a ryzen beginner like myself much appriciated!
And what i find intresting is that when the volts are so high why doesnt it boost to advertized 4,2ghz but rather hovers at 3,9ghz - 4,0ghz