Omen Max 45L: It’s got a little AIO hat
The Omen 45L isn’t actually a brand new design, as it’s been available for most of this calendar year. But this was the first time I’d seen what HP is calling the “Omen Cryo Chamber”—a dedicated area above the primary PC component compartment, specifically made for an all-in-one cooler.
The one installed in the demo unit (and presumably any pre-built you buy) was 360mm, but any standard cooler with the usual radiator-and-fans combo should work. The pump and heat spreader is connected to the coolant lines through a narrow channel between the compartments.
Michael Crider/Foundry
This separated AIO space keeps the main chamber cooler and allows better ventilation for the cooler itself. HP claims this maximized air flow can lower full-load temperatures by up to 7.5 degrees Celsius. I asked, and yes, you can replace or upgrade the AIO with any standard model, again, up to 360mm.

HP
That’s not the only trick in the Omen Max 45L’s playbook, though. Hiding under a shroud at the other end of the case is a new, exclusive 1,200-watt modular power supply.
It’s connected to the motherboard via USB-C, allowing for real-time monitoring, custom fan curves, and “built-in cleaning mode.” Occasionally, the fan’s rotor will be reversed, helping to clear out any accumulated dust. I doubt it’ll be enough to completely overcome the need for manual cleaning, but it’s an undeniably cool trick.

Michael Crider/Foundry
The updated Omen Max 45L maxes out the configurable parts to an AMD Ryzen 9950X3D and a GeForce RTX 5090 graphics card, about as good as it gets for pre-built machines on the consumer level.
HP isn’t talking prices at the moment, so just assume “a hell of a lot” if you want those top-tier components.