Hey everyone! I'm looking to upgrade my PC case and AIO cooler. Currently, I'm running an i9-13900K with a 240mm AIO, and I've noticed some performance inconsistency. To improve cooling, I'm planning to switch to a 420mm AIO, and here's what I'm considering:
* **Fractal** Midi North XL RC Charcoal Black TG
* **Arctic** Liquid Freezer III Pro 420
* 4x **Arctic** Lüfter 140*140*27 P14 Pro PST
* **Arctic** Case Fan Hub
I'm curious if anyone has suggestions on how I could enhance this setup or if there are budget-friendly alternatives for a 420 AIO that can accommodate a push/pull configuration with the Arctic III Pro. Thanks for your help!
2 Answers
Just a heads up, even with a 420mm AIO, the i9-13900K can still throttle under heavy load. It typically takes longer to heat soak than a smaller AIO, but once it does, your clock speeds should stabilize better. Just be prepared for the heat this CPU generates—it can pull up to 300W!
Before you dive into the upgrade, make sure your case can actually fit a 420mm radiator. Some cases might not be compatible with a push/pull config, so it’s worth double-checking the dimensions first!
Yeah, I checked, but it seems push/pull might be an issue. That's why I was wondering about alternatives.

Right? That chip really needs some serious cooling to keep up!