So I tried this and to my surprise the 92mm is quiet useless. Meaning that the difference between 100% and 20% which is its minimum speed, is 1 or 2 degrees (with the side panel on).
Just create a fan duct. For tests, using simple card board is totally fine. I did the same, but not with the useless Noctua 92 mm, but instead with the
Silver Soul 110 92 mm fan. Also tested with the
Arctic P9 Max, which is a bit louder in the top range, but aside of that performs almost identical. As this one is probably much easier to come by, I suggest getting that one and just tune it so it doesnt quite hit the max rpm (and noise level).
So my exact setup was:
- Ryzen 9 7950X untamed (because of a weird BIOS reset in the B650-E board)
- Asrock PG-ITX B650-E (look it up, its all those weird letters)
- Thermalright Silver Soul 135 with P12 Max - set to
intake
- P9 Max / Silver Soul 110 92 mm - set to intake
- Silverstone Air Slimmer 120 mm - mounted on top, directly between the CPU cooler and the PSU, set to
exhaust
- fan duct using card board, from the 92 mm intake directly to the CPU cooler
- fan duct from the front of the CPU cooler up to the top exhaust fan
Test results:
Ok, test results are in: Dual-Fan: NF-A9 + Arctic P9 Max, overall temp ~22° C (+0.8 than normal) a) Idle: - 36.2 C (tcl) - 25.2 C (tccd1) - 26.2 C (tccd2) - nvme: 40.9 C / sensor 1: 34.9, sensor 2: 38,9 C b) full sustained load (5 minutes) - 73.2 C - 72.8 -...
smallformfactor.net
cu, w0lf.