Setup and test results …
The following PC setup was used as test system:
| Intel Motherboard | ASRock Z490 Steel Legend |
| CPU | Intel Core i5-10500 CPU Default @ 4200 MHz at approx. 1.10 Volt |
| Cooler | Arctic Liquid Freezer II 240 |
| Thermal Compound | ARCTIC MX4 |
| Graphics card | ASRock Radeon RX 5700 Challenger D 8G OC |
| SSD | Crucial MX200 SSD |
| PSU | Cooler Master Silent Pro M 600W |
| Chassis | Cooler Master Testbench v1.0 |
| Operating System | Windows 10 Pro 64 Bit |
The volume measurement was performed in the installed state from a constant distance of 100cm.
The following programs were used for the measurement: Prime95 and Intel XTU.
Thermal compound: Arctic MX-4
The room temperature was around 21°C during the test.
The following image shows a thermal image of the Arctic Liquid Freezer II 240 AIO radiator with the low-profile Arctic P12 Slim PWM PST fans on the ASRock Z490 Steel Legend LGA 1200 test system under Prime95 Small FFTs full load! You can see very nicely how the heated air flows through the radiator.
We first tested the Intel Core i5-10500 CPU without overclocking in idle at low, medium and maximum speed. Thus, the TDP was only 6-7 watts! The temperature was 24°C at the lowest speed and 23°C at the highest speed.
However, since we are here at OCinside.de, we naturally wanted to test the cooler with CPU overclocking despite the locked CPU multiplier. Therefore, we overclocked the locked Intel CPU by increasing Primary Plane Current Limit, Short Duration Power Limit and Long Duration Power Limit to the point where we could reach about 100W TDPc at maximum load (Small FFTs).
So, we stressed the Intel Core i5-10500 CPU with Prime95 Small FFTs to the point that Base Frequency Boost reached about 100 watts TDP and could now measure the temperature at low, medium and maximum speed.
At idle, the original Arctic Liquid Freezer II 240 AIO fan was around 29.8 dBA. Under load, the Arctic P12 120mm PWM fan’s volume went up to about 33.4 dBA at full speed of about 1650 rpm and the temperature was about 58°C with about 100 watts TDP. At idle, the Arctic P12 Slim PWM PST on the Arctic Liquid Freezer II 240 AIO was also just 29.8 dBA. Under load, the Arctic P12 Slim PWM PST 120mm PWM fan volume went to about 35.9 dBA at full speed of about 1356 rpm and the temperature was about 59°C with about 100 watts TDP. There is a bit of a lack of pressure in the lower speed range, but the flat fan easily makes up for it in the upper range.
Yet another test under maximum Small FFTs Prime95 load at about 100W TDP showed that the Arctic Freezer 34 eSports cooler with 2x Arctic P12 Slim PWM PST 120mm PWM fans in push/pull mode (front blowing, rear sucking) achieved almost the same cooling result (about +1°C more) as the original 25mm Arctic BioniX fan also at full speed. The ratio of one to two fans was about 3°C temperature difference with the P12 Slim PWM PST.
So, Arctic has managed to provide the Arctic P12 Slim PWM PST with a good airflow despite its low profile.
Arctic P12 Slim PWM PST Result and general impression …