I'm looking for advice on airflow for a gaming PC with an NZXT H5 Flow, Asus Prime Z690-P WiFi D4 motherboard, Intel Core i5-12400, RTX 3060, and Lian Li Galahad 240 AIO. The radiator is currently mounted at the front with both fans configured as intake. I have one 120mm fan at the rear and another at the top, both exhausting air.
I've heard that mounting the radiator at the top as exhaust can benefit gaming performance because the GPU receives cooler, unobstructed intake air instead of air warmed by the CPU radiator. My RTX 3060 reaches about 85°C during gaming, so I'm wondering whether moving the radiator could help reduce GPU temperatures.
If I move the AIO to the top, I could add more front intake fans. Should I keep the current front-mounted radiator, or move it to the top? What fan layout would work best in this case?
2 Answers
An i5-12400 and RTX 3060 are not especially difficult components to cool, so the current setup is probably fine if the system is stable and quiet. A top-mounted radiator with front intake would generally be the preferred layout when building from scratch, since it gives the GPU cooler direct intake air. However, the difference may be small, and moving everything may not noticeably improve gaming performance by itself.
The top-mounted radiator arrangement could help the GPU somewhat, especially if the front radiator is noticeably warming the incoming air. If you move it, use the radiator as top exhaust, keep the rear fan as exhaust, and install one or two front fans as intake. Still, 85°C on an RTX 3060 is generally within its expected operating range, so the change is more about improving airflow balance than unlocking extra performance.
So even at roughly 85°C, you would treat the current front-radiator setup as acceptable unless I’m seeing noise or throttling?
The GPU reaches around 85°C while gaming. Would that make moving the radiator worthwhile, or is that temperature still acceptable?