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3M Thermally Conductive Acrylic Interface Pad 5590H vs Deepcool G40: Comparison
3M Thermally Conductive Acrylic Interface vs Deepcool G40: the thermal conductivity difference
There is no decisive spec gap here. Thermal conductivity splits them by a margin most buyers will never feel, 3M Thermally Conductive Acrylic Interface 2.08 W/mK against Deepcool G40 5.2 W/mK. Recommended use is not the same on both, Battery cooling, power electronics and HMI displays on the 3M Thermally Conductive Acrylic Interface versus High-end CPU/GPU on the Deepcool G40. They differ on conductivity source too, https://multimedia.3m.com/mws/media/920112O/3m-thermally-conductive-acrylic-interface-pad-5590h-technical-data-sheet.pdf on the 3M Thermally Conductive Acrylic Interface versus https://www.deepcool.com/products/Accessories/ThermalPaste/2021/11408.shtml on the Deepcool G40. There is a split on paste segment as well, Pad on the 3M Thermally Conductive Acrylic Interface versus Standard Paste on the Deepcool G40.
3M Thermally Conductive Acrylic Interface vs Deepcool G40: which one fits your build
The 3M Thermally Conductive Acrylic Interface is the one to take for silicone-sensitive assemblies near optics, displays or connectors and power electronics and battery gap filling, though it is not built for high-end GPU memory or VRM cooling. It is not the one for builds where silicone pads are acceptable and higher conductivity is wanted. The Deepcool G40 suits multiple installs, dual-GPU setups, or repeat reapplications from one tube and overclockers who want the G-series conductivity in a larger package, though it is not the pick for buyers who need DS7/DS9-tier top-end conductivity. It is the wrong buy for single-install buyers who don't need 4g of paste (G15's 1.5g is cheaper and sufficient). Our rating of the 3M Thermally Conductive Acrylic Interface (6.6/10): an industrial acrylic interface pad from an established materials manufacturer, aimed at OEM and repair use rather than enthusiast builds. Our rating of the Deepcool G40 (5.8/10): an overclocking-focused entry paste from Deepcool, adequate but unremarkable.
Where the two are identical
Everything else lines up. Electrical conductivity read the same on both, so those are not worth weighing.
Specs and benchmarks
Thermal Conductivity
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- 2.08 W/mK (ASTM D5470)
- Deepcool G40
- 5.2 W/mKBest
Electrical Conductivity
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Insulating
- Deepcool G40
- Insulating
Package Size
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Sheets and die-cut shapes, 0.5/1.0/1.2/1.5/2.0mm thick
- Deepcool G40
- 4 g grease weight (16 g net weight incl. syringe)
Recommended Use
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Battery cooling, power electronics and HMI displays (general electronics gap filling)
- Deepcool G40
- High-end CPU/GPU (marketed for the overclocking community and extreme gamers)
Conductivity Source
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- https://multimedia.3m.com/mws/media/920112O/3m-thermally-conductive-acrylic-interface-pad-5590h-technical-data-sheet.pdf
- Deepcool G40
- https://www.deepcool.com/products/Accessories/ThermalPaste/2021/11408.shtml
Paste Segment
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Pad
- Deepcool G40
- Standard Paste
Which one should you pick?
Choose 3M Thermally Conductive Acrylic Interface Pad 5590H if you already have it on hand or find it at a lower price.
Choose Deepcool G40 if you want the higher thermal conductivity (5.2 W/mK vs 2.08 W/mK (ASTM D5470)).
Price comparison
| Retailer | 3M Thermally Conductive Acrylic Interface Pad 5590H | Deepcool G40 |
|---|---|---|
| Amazon | View on Amazon | |
| Newark | View on Newark |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
3M Thermally Conductive Acrylic Interface Pad 5590H
6.6 / 10 Expert Rating
An industrial acrylic interface pad from an established materials manufacturer, aimed at OEM and repair use rather than enthusiast builds.
Deepcool G40
5.8 / 10 Expert Rating
An overclocking-focused entry paste from Deepcool, adequate but unremarkable.