ARCTIC P14 Pro PST 140mm Case Fans (5-pack)

Our analysis

Almost twice the rated airflow of the ARCTIC P12 PWM PST, the plain 120 mm five-pack: 110 CFM against 56.3, and 5.2 mmH2O against 2.2, per ARCTIC. The price of that is speed, 2500 rpm against 1800, and a 140 mm mount your case may not have. For a case that takes 140s and a build that runs hot, the extra air is the point; for a quiet office PC, the P12 is enough.

What stands out

• More air at a lower top speed than the 120 Pro. 110 CFM at 2500 rpm against the P12 Pro's 77 CFM at 3000 rpm: a bigger blade moves more air per turn, so it can reach the same airflow spinning slower.
• Five fans, one header. The PST cable chains them so one motherboard connector sets the speed of all five.
• A 2500 rpm ceiling. Room to push hard under load and drop back at idle.
• Fluid dynamic bearing and no RGB. Plain fans built to move air.

Where it falls short

• Fit is on you: plenty of cases only take 120 mm fans at the front, and some lose radiator clearance with 140s. Count the mounting holes before you order.
• Current adds up: five of these on one header draw a lot, so budget for a hub.

Look elsewhere if

• Your case only takes 120 mm fans up front: the ARCTIC P12 Pro PST is the same series at 120 mm, rated at 6.9 mmH2O and 77 CFM. And if you do go with this five-pack, pair it with the ARCTIC Case Fan Hub so the power comes from the supply and not the header.

Why 140 mm is about noise rather than temperature is belief number six in our guide How Many Case Fans Does Your PC Need?