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3M Thermally Conductive Acrylic Interface Pad 5590H vs Thermalright TF8: Comparison
3M Thermally Conductive Acrylic Interface vs Thermalright TF8 thermal conductivity compared
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 Thermalright TF8 13.8 W/mK. Conductivity source is not the same on both, 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.thermalright.com/product/tf8-thermal-paste-1-2g/ on the Thermalright TF8. They differ on paste segment too, Pad on the 3M Thermally Conductive Acrylic Interface versus Standard Paste on the Thermalright TF8.
3M Thermally Conductive Acrylic Interface vs Thermalright TF8: which one fits your build
The 3M Thermally Conductive Acrylic Interface suits 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. Avoid it for builds where silicone pads are acceptable and higher conductivity is wanted. The Thermalright TF8 is the one to take for experienced builders comfortable spreading stiff paste, though it is the wrong buy for anyone who can't verify which TF8 batch they are buying and beginners who want an easy thin spread. The same goes for buyers who can confirm pre-2025 stock and want a dense, high-performing paste. 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 Thermalright TF8 (6.6/10): A high-density filler paste from an older TF-series batch; buyers should be aware a 2025 formula change was flagged by independent testers.
Frequently asked questions
Do the 3M Thermally Conductive Acrylic Interface and Thermalright TF8 differ on viscosity?
Yes. Viscosity reads Firm, tacky acrylic polymer sheet on the 3M Thermally Conductive Acrylic Interface versus Dense mix of thermally conductive fillers with relatively little... on the Thermalright TF8.
Is the Electrical Conductivity the same on the 3M Thermally Conductive Acrylic Interface and Thermalright TF8?
It is. Both are listed at Insulating, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- 3M
- Thermalright TF8
- Thermalright
Model
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- 5590H
- Thermalright TF8
- TF8
Thermal Conductivity
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- 2.08 W/mK (ASTM D5470)
- Thermalright TF8
- 13.8 W/mKBest
Electrical Conductivity
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Insulating
- Thermalright TF8
- 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
- Thermalright TF8
- 1.2g, 2g, 5.8g, 12.8g syringe options
Recommended Use
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Battery cooling, power electronics and HMI displays (general electronics gap filling)
- Thermalright TF8
- High-end CPU/GPU
Safety Notes
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Non-conductive acrylic pad; no special handling precautions required
- Thermalright TF8
- Electrically non-conductive, harmless per manufacturer
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
- Thermalright TF8
- https://www.thermalright.com/product/tf8-thermal-paste-1-2g/
Viscosity
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Firm, tacky acrylic polymer sheet
- Thermalright TF8
- Dense mix of thermally conductive fillers with relatively little silicone binder, per igor'sLAB teardown
Paste Segment
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Pad
- Thermalright TF8
- 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 Thermalright TF8 if you want the higher thermal conductivity (13.8 W/mK vs 2.08 W/mK (ASTM D5470)).
Price comparison
| Retailer | 3M Thermally Conductive Acrylic Interface Pad 5590H | Thermalright TF8 |
|---|---|---|
| Amazon | View on Amazon | |
| Newark | View on Newark | |
| Thermalright (Manufacturer) | View on Thermalright (Manufacturer) |
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.
Thermalright TF8
6.6 / 10 Expert Rating
A high-density filler paste from an older TF-series batch; buyers should be aware a 2025 formula change was flagged by independent testers.