Articles: Cooling

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Technical Specifications and Recommended Pricing

Testbed and Methods

All tests of the new Antec cooling system and its competitors were performed inside a closed system case with the following configuration:

We managed to overclock our six-core processor with the default (non-lapped) heat-spreader surface using 25x multiplier and enabled “Load-Line Calibration” (Level 2) to 4.32 GHz. The nominal processor Vcore was increased to 1.4 V in the mainboard BIOS:

We disabled Turbo Boost and Hyper-Threading technologies during our tests to ensure that the CPU gets warmed up better. The memory voltage was at 1.64 V and its frequency was 1.4 GHz (7-7-7-16_1T timings). All other parameters available in the mainboard BIOS and connected with CPU or memory overclocking remained unchanged.

All tests were performed under Windows 7 Ultimate x64 operating system. We used the following software during our test session:

  • CPU Stress Test (CST) version 0.18b – to load the processor (matrix # 15, 10-12 minutes);
  • Real Temp GT 3.59 Beta – to monitor the processor cores temperature;
  • CPU-Tweaker 1.5 – to visually monitor temperatures and frequencies of the Intel CPU using graphics.

So, the complete screenshot during the test session looks as follows:

The CPU was loaded with two consecutive CST test runs with the settings as indicated above. The stabilization period for the CPU temperature between the two test cycles was about 8-10 minutes. We took the maximum temperature of the hottest CPU core for the results charts. Moreover, we will also provide a table with the temperature readings for all cores including their average values. The ambient temperature was checked next to the system case with an electronic thermometer with 0.1 °C precision that allows hourly monitoring of the temperature changes over the past 6 hours. The room temperature during our test session varied between 24.2-24.7 °C.

We are going to compare the performance of our compact Antec KÜHLER H2O 620 system against that of Thermalright Archon in its standard configuration with one Thermalright TY-140 fan working in two speed modes: at quiet 800 RPM and at maximum 1300 RPM. Archon costs only $10 more than Antec KÜHLER H2O 620, which is not a determinative difference at the price point of $70-$80.

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