Evening everyone! Just built a new computer in the past few days. Been enjoying my first foray into the AMD space in almost two decades. I attached an image of my best bench-to-date at 7284. I'm using a Noctua NH-D15 air cooler. The 140 mm fan that comes with the with the cooler is located in the center slot. To accommodate my RAM, I replaced the second fan with an NF-A12X25.
Also, I noticed some discussion above regarding the vcore of the Ryzen 9. I actually did a sweep of offset voltages and compared to a set override of 1.35V. All of those benchmarks were performed on fresh reboots with multiple tests taken at each point. The interesting finding here is that there is an ideal negative offset (and that the override led to a pretty substantial drop in performance in my case). I had one of my friends, who also has a 3900X, perform this voltage test, and he found the same thing. Might be worth scanning if you're looking for more oomph. That being said, I have to add some caution about the -0.15V offset. My friend's machine did not like this setting at all (with our guess being voltage-at-idle being problematic). Anyway! Take care.
Also, I noticed some discussion above regarding the vcore of the Ryzen 9. I actually did a sweep of offset voltages and compared to a set override of 1.35V. All of those benchmarks were performed on fresh reboots with multiple tests taken at each point. The interesting finding here is that there is an ideal negative offset (and that the override led to a pretty substantial drop in performance in my case). I had one of my friends, who also has a 3900X, perform this voltage test, and he found the same thing. Might be worth scanning if you're looking for more oomph. That being said, I have to add some caution about the -0.15V offset. My friend's machine did not like this setting at all (with our guess being voltage-at-idle being problematic). Anyway! Take care.