Quick Answer

For AAA single-player gaming, a 240mm AIO is enough for most CPUs — a Ryzen 7 7800X3D or Core i5 stays in the low-70s C under long story sessions on a quality 240mm unit (around R2,200). Step up to a 360mm (around R3,200) only for a Ryzen 9 / Core i9 or if your case has the radiator space and you want lower noise.

Why 240mm covers most builds

AAA single-player games load the CPU moderately while the GPU does most of the work, so heat output is manageable. A good 240mm AIO dissipates the 90-120W a gaming Ryzen 7 or Core i5 produces, holding temperatures in the low-70s C through hours of play. The extra radiator of a 360mm mainly helps high-core, high-wattage chips or lets fans spin slower for a quieter rig — not more frames.

When 360mm is worth it

A 360mm AIO earns its place on a Ryzen 9 9950X or Core i9 that can pull 200W+, where the larger radiator keeps clocks boosting and noise down. It also suits a warm Highveld room in summer or a case with poor airflow. If your case supports a 360mm mount and you want the quietest possible cooling, it is a reasonable upgrade — but it will not raise your AAA frame rates over a capable 240mm.

Build notes

Check your case lists a 360mm mount before buying one — many mid-towers top out at 240/280mm. Pair either with good case intake fans. Both sizes are stocked locally with AM5 and LGA1700 brackets.

FAQ

Is a 240mm AIO enough for AAA gaming?

Yes for most CPUs. A quality 240mm holds a Ryzen 7 or Core i5 in the low-70s C through long story sessions. 360mm mainly helps high-end chips.

Does a 360mm AIO add fps?

No. Once the CPU is not throttling, a bigger radiator does not add frames — it lowers temperatures and lets fans run quieter.

When should I buy a 360mm AIO?

For a Ryzen 9 / Core i9 that draws 200W+, a hot room, or a case with poor airflow. Confirm your case supports a 360mm mount first.

TIP

Before you buy

Most AAA rigs are fine on a 240mm AIO — only step to 360mm for a Ryzen 9 Core i9 or for quieter fans.