{"id":6832,"date":"2018-01-23T00:09:00","date_gmt":"2018-01-22T23:09:00","guid":{"rendered":"https:\/\/www.hwcooling.net\/test-vplyv-intenzity-pritlaku-na-tepelny-vykon-chladica-cpu\/"},"modified":"2021-04-22T05:48:10","modified_gmt":"2021-04-22T03:48:10","slug":"test-how-can-a-pressure-of-a-cooler-affect-its-cooling-performance","status":"publish","type":"post","link":"https:\/\/www.hwcooling.net\/en\/test-how-can-a-pressure-of-a-cooler-affect-its-cooling-performance\/","title":{"rendered":"How can a pressure of a cooler affect its cooling performance?"},"content":{"rendered":"\n

One of the things that make testing of CPU coolers interesting is that you can never know how will a\u00a0particular cooler perform. There are too many variables that affect the results. Such as the pressure on the processor, for example. We\u2018ve tried to find out what a weaker assembly system can cause, but also whether it pays off to cross the safe threshold.<\/p>\n

Two years ago, the issue of pressure intensity was very popular. Super tight clasps of some coolers were not the best solution for thin Intel PCBs. Maybe you can remember the sad images of deformed or broken substrates. Scythe Mugen 4 became notorious because of that, but some Thermalright coolers were also quite \u201caggressive\u201c. Most manufacturers therefore adjusted their assembly systems by replacing the original screws with ones that have shorter threads.<\/p>\n

To give you an idea how can a pressure of the clasp affect the cooling performance, we carried out detailed tests with Scythe Mugen 5 rev. B.<\/p>\n

How we were testing + results<\/strong><\/h2>\n

We used Core i7-5930K overclocked to 4.3 GHz with Vcore set to 1.25 V. The load was simulated in IntelBurnTest (7500 MB) for 600 seconds.We adjusted everything (high-speed fans included) accordingly to achieve the biggest consumption and heating possible, but we also kept a\u00a0reserve for modes with weaker pressure.<\/p>\n

The clasp was regulated in six steps. First we used maximum pressure, and then reduced the tension by one turn in every following test. We used a\u00a0fixed marker to be as precise as possible.<\/p>\n

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In total, the pressure was reduced five times, and at the last stage, the only force that was keeping the cooler on the IHS was its own weight. We measured each setting twice, with the motherboard horizontally and vertically.
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