Arctic did it Again! Dropping the Intel Core Ultra 9 285K Temperatures >5°C with An Offset Mounting

Test Methodology

I first install the cooler into a hemi-anechoic chamber, and with the help of a highly sophisticated sound analyzer, I take all necessary noise measurements required for the testing. Afterward, I install the system inside a giant climate chamber, where the ambient temperature remains steady at 25 degrees Celsius; this way, I don’t have to take the delta difference into account since I can evaluate all coolers under the same ambient temperature. I used to believe that taking the delta difference between the measured temperature of the CPU and the ambient temperature provided accurate results. Still, after testing with the climate chamber, I soon realized this was not the case.

Besides the Giant Force climate chamber, I also use the following equipment.

IMG_3923

Noise Low

Noise1

Noise2

To evaluate the coolers, I use an Intel Core Ultra 9 285K. This beast can exceed 300W of sustained load, which I measure accurately using a Powenetics v2 system. Below are all the parts of the CPU cooling station test system. The thermal paste I use is Arctic Cooling MX-4. I run at least two test sessions and take the average results. In all tests, the applied conditions are the following:

• Ambient Temperature: 25°C ±0.5°C
• Humidity: 30% ±4%RH

The load application is no other but the notorious Prime95 (small FFTs), which applies a tremendous load to the processor. I run each test for 20 minutes, allowing for a 10-minute cool period between each test. The whole procedure is fully automated thanks to a particular application that I made for this purpose. In AIOs, the pump runs at full speed during the entire testing duration.

Cooling_Test_App1

Cooling_Test_App2

Cooling_Test_App3

The critical point in my methodology for coolers is that I consider the CPU’s average frequency during testing because it doesn’t remain steady throughout the tests. It constantly changes according to the load and the operating temperatures. Moreover, I have the Powenetics system to continually measure the CPU’s power consumption, which is way more accurate and faster than using a software solution like HWinfo.