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Square pale grey phase-change thermal pad 80 by 80 by 0.25 mm

UPSIREN

UPSIREN PCM-1 Phase Change Thermal Pad 80x80x0.25mm

SKU CH-856C-8G69A

Phase-change silicone pad melts above 45 °C for even coverage, then solidifies to prevent overflow and lasts two to three times longer than standard grease

Option 80x80x0.25mm

  • Phase-change pad solidifies below 45 °C preventing overflow
  • Lasts 2-3 times longer than ordinary thermal grease
  • Cut to size, peel both films, no orientation needed
  • Liquid-cooler and GPU-core tests show better cooling
  • Thermal impedance under 0.04 °C cm²/W after 1000-hour 150 °C bake

UPSIREN PCM-1 Phase Change Thermal Pad

The UPSIREN PCM-1 is a phase-change silicone grease replacement pad measuring 80x80x0.25mm. It suits builders who want a cleaner, longer-lasting alternative to traditional thermal paste for CPU or GPU repasting. The material stays solid below 45 degrees and liquefies above that temperature to fill microscopic gaps. It is not suited for buyers who need a thicker interface material or a conventional paste they can spread manually.

Thermals noise and power draw in normal use

The pad delivers thermal impedance below .04Ccm2/W once it undergoes phase change above 45 degrees. The manufacturer recommends running the system for more than two hours after installation so the material fully liquefies and wets the surfaces. Because it solidifies again when cool, it eliminates the pump-out and overflow common with ordinary grease over long periods. No fan noise or power consumption is added by the material itself.

Build quality connectors and mounting day to day

The pad is supplied as a solid sheet that you cut to the exact size of the die, then peel protective films from both sides before placement. It passes 150 degree baking for 1000 hours and 1000 thermal cycles, indicating strong reliability for liquid coolers and GPU cores. The 0.25mm thickness requires flat mating surfaces; uneven or stepped packages may not make full contact. There are no connectors or mounting hardware included.

Highlights

  • Phase-change pad solidifies below 45 °C preventing overflow
  • Lasts 2-3 times longer than ordinary thermal grease
  • Cut to size, peel both films, no orientation needed
  • Liquid-cooler and GPU-core tests show better cooling
  • Thermal impedance under 0.04 °C cm²/W after 1000-hour 150 °C bake

Specifications

No published specifications for this item yet.

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Questions about this item

How do I install the 80x80mm pad and what is the common mistake?

Cut the pad to the CPU or GPU size, peel both protective films, place it on the die, then run the system over 45°C for at least two hours so the material changes phase and wets the surface.

What maintenance or replacement will the pad need later?

The phase-change material solidifies below 45°C and does not pump out, giving a service life 2-3 times longer than ordinary grease, so replacement intervals are significantly extended.

What limit appears first under sustained heavy load?

The pad passes 150°C baking for 1000 hours and 1000 thermal cycles, while maintaining thermal impedance below 0.04°C·cm²/W, so thermal resistance stays stable before any material degradation.

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