Case fans are the cheapest meaningful upgrade in an SA gaming build, directly improving GPU and CPU temperatures and noise. Buyers want to know how many, which size and what to spend, with quality fans from around R150 each at Evetech.

Quick Answer

Good case fans in SA cost roughly R150 to R400 each at Evetech, so a full set of three to five runs around R1,000, with premium PWM models higher and most quality 140mm fans drawing under 3W each. A typical gaming build wants three to five fans: two front intakes, one rear exhaust, and optionally one or two top exhausts. This airflow path can drop GPU temperatures 5 to 10C versus a poorly ventilated case.

Fan Size, Speed And Pressure

140mm fans move more air at lower noise than 120mm, so use them where the case allows. Choose PWM fans so the motherboard can control speed by temperature, keeping the build quiet at idle. For radiators and restrictive mesh, static-pressure fans work best; for open intakes, airflow-optimised fans. A 1,500 to 2,000 RPM fan offers a good cooling-to-noise balance for a hot card like an RX 7800 XT or RTX 4070 Super.

SA Buying And Setup Notes

Aim for slight positive pressure (more intake than exhaust) with filtered intakes to keep dust out, which matters in dusty SA conditions. Daisy-chain or hub-connect PWM fans for tidy cabling. Spending a little more on quality bearings means quieter, longer-lasting fans. RGB models add looks but the cooling difference is in airflow, not lighting. Evetech stocks case fans in 120mm and 140mm across airflow, pressure and RGB types.

FAQ

How many case fans should a gaming PC have?

Three to five is typical: two front intakes, one rear exhaust, and optionally one or two top exhausts. This balanced path can cut GPU temperatures by 5 to 10C versus a starved case.

Are 140mm fans better than 120mm?

Generally yes. 140mm fans move more air at lower RPM and noise, so use them wherever the case supports them; 120mm fans suit smaller mounts and most radiators.

Should I run positive or negative case pressure?

Positive pressure, with more intake than exhaust and filtered intakes, keeps dust out of the system, which is especially useful in dusty SA environments.

TIP

two filtered front intakes and one rear exhaust for slight positive pressure, and use PWM fans so the motherboard can quiet them at idle while ramping under gaming load.