Thermalright axp90-x53, x47 120mm fan adapter

Saw quite a few of these around but all used an offset design that resulted in some less than ideal temperatures and airflow.

Here's a simple adapter plate that prints without support and uses the stock self-tapping mounting screws to attach to any standard 120mm PC fan. Simply bolt it onto your fan, tape the edges if you really want a seal, and snap into place on the cooler.
The design is centered to maximize air flow through the fin stack and should work well in either exhaust or intake configuration.

Print at 60-100% fill without supports in a heat-resistant material like PETG or similar. Most PCs get to 75C before the fans really ramp up and PETG has a glass transition temp slightly above there so it shouldn't deform. Look into your material and choose something with at least an 80C glass-transition temp so you don't have warpage over time during use.
For testing PLA+ seems to do fine up to around intermittent 70C temps, but its GTT is apparently around 65C so I wouldn't rely on it long-term.

Incorporates the snap-fit tab design from LoserCard's version but is otherwise a new design.

Thermal testing vs stock 92mm and offset 120mm:
System: 7600x, PBO, no thermal or power limit, open side panel, 7z multicore compression benchmark on linux mint (loads the CPU to 100% usage)

• Stock 92mm fan (intake config):
  • Maxes out at 93C, does not thermal throttle but is quite loud at 100% fan
• 120mm offset adapter (intake config):
  • Hits 95.5C and thermal throttles almost instantly
• 120mm central adapter (this design, exhaust config):
  • Hits 95.5C and thermal throttles after roughly 10 seconds
• 120mm central adapter (this design, intake config):
  • Maxes out at 92C, does not thermal throttle, significantly quieter than stock

Based on what I saw, the main advantage is looks and noise vs the stock 92mm fan, 1 degree reduction is not a tremendous boost, though it did mean the frequency of PBO was a little more stable. The x53 CU is a 150W max cooler and the 7600x with PBO an 100% utilization is pushing extremely close to that limit.
Based on what I saw during tests there is zero reason to use an adapter in either exhaust config or an offset adapter, as they make the cooling performance worse than stock.