Phase-change silicone grease is easier to shape. Ordinary silicone grease will overflow around the CPU/GPU due to the extrusion of the cooler after being used for a long time. But the phase-change silicone grease sheet will not, because when the temperature returns below 45 , it will automatically become solid and will not flow. After a long time of use, it will not spread to the surrounding due to being squeezed .
The service life is longer, which is 2-3 times that of ordinary thermal grease.
It is easier to replace, you only need to cut the phase change film to the same size as the CPU/GPU, tear off the films on both sides (no front and back), and you can use it.
It is recommended to let the computer work for more than 2 hours after use, because only when the temperature is higher than 45 , the phase change film will become liquid.
After the UPSIREN official laboratory test, the phase change film has a better cooling effect for liquid coolers and GPU cores.
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Overview
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Product Description
PCM-1 is a super highly thermally conductive Phase Change Material (PCM) in both pad and paste formats. It is designed to minimize thermal resistance at interfaces, maintain excellent performance through reliability testing, and provide scalable application at a competitive cost.
PCM-1, based on a novel polymer PCM system, exhibits excellent interface wetability during typical operating temperature ranges, resulting in extremely low surface contact resistance. Since PCM-1 comes only in 0.25 mm (thicker versions are under development) you need to be sure that this thickness is compatible and suitable for the flatness of your package.
PCM-1 is a proprietary material that provides superior reliability (pass 150C baking 1000 hours, T/C-B 1000 cycles) and maintains low thermal impedance ( <0.04Ccm2/W @ no shim), making the PCM-1 series desirable for high performance integrated circuit devices.
Product Use
Clamping pressure and temperature are suggested to achieve a minimum bond line thickness of the thermal interface material, typically less than 1.5 mil ( 0.038 mm) for best performance. The material must go through the phase change temperature to exhibit entitlement performance. THERMAL IMPEDANCE POST RELIABILITY (ASTM E1461) End of Line 0.04C -cm2/W Bake 150C, 1000 h 0.04C -cm2/W Double 85, 1000h 0.04C -cm2/W Temperature Cycling ''B''(-55C to +125C, 1000 cycles) 0.045C -cm2/W
Pictures of ordinary liquid silicone grease after use.
The distribution is uneven, and it will overflow around after a long time of use. And there is obvious burnt phenomenon in the middle.
Phase change silicone grease sheet before use
Similar to ordinary thermal pads.
Pictures of phase change silicone grease sheet after use.