360mm AIO vs 240mm Guide for SA Builders — SA Edition 2

Quick Answer

On a R20,000 build, a 240mm AIO is enough for most CPUs and frees budget for the GPU; step to 360mm only for a hot top-tier chip like a Ryzen 9 9950X or Core Ultra 9. A 240mm unit runs roughly R1,500-R2,500 and a 360mm about R2,500-R4,000, a R1,000-plus gap better spent on graphics in this budget.

When 240mm is enough

A 240mm AIO comfortably cools mid-to-upper CPUs such as a Ryzen 7 7800X3D or 9700X, which run efficiently and rarely exceed 75-85C under a 240mm radiator. On a R20,000 build the CPU is usually in this class, so 240mm keeps temperatures and noise in check while leaving more of the budget for the GPU, which does more for frame rates.

When 360mm earns its place

A 360mm AIO matters for the hottest chips, like a Ryzen 9 9950X or Core Ultra 9, where the extra radiator area shaves several degrees and keeps boost clocks higher under sustained all-core load. If your R20,000 build does not include one of those, put the R1,000-plus difference toward a stronger GPU instead. Always confirm your case supports a 360mm radiator before buying, since many compact cases only fit 240mm.

FAQ

Do I need a 360mm AIO or is 240mm enough?

A 240mm AIO is enough for most CPUs up to a Ryzen 7 9700X or 7800X3D, keeping them at 75-85C. Step to 360mm only for a hot top-tier chip like a 9950X or Core Ultra 9.

How much do 240mm and 360mm AIOs cost in SA?

Roughly R1,500-R2,500 for a 240mm unit and R2,500-R4,000 for a 360mm. On a R20,000 build, that R1,000-plus gap is usually better spent on the GPU unless you run a very hot CPU.

Will a 360mm AIO fit my case?

Not always. Many compact cases only support a 240mm radiator, so confirm your case's radiator clearance before buying a 360mm unit to avoid a costly return.