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3M Thermally Conductive Acrylic Interface Pad 5590H vs CS Labs (Computer Systems, Greece) CS Labs K5-Pro: Comparison
3M Thermally Conductive Acrylic Interface vs CS Labs (Computer Systems, Greece) CS: 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 CS Labs (Computer Systems, Greece) CS >5.3 W/mK. They differ on recommended use too, Battery cooling, power electronics and HMI displays on the 3M Thermally Conductive Acrylic Interface versus Thermal pad replacement for GPU VRAM/MOSFETs and laptop hot... on the CS Labs (Computer Systems, Greece) CS. 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://computer-systems.gr/products/k5-pro-20g/ on the CS Labs (Computer Systems, Greece) CS. Paste segment is not the same on both, Pad on the 3M Thermally Conductive Acrylic Interface versus Standard Paste on the CS Labs (Computer Systems, Greece) CS.
Who each one is for
Buy the 3M Thermally Conductive Acrylic Interface for silicone-sensitive assemblies near optics, displays or connectors and power electronics and battery gap filling, though it is the wrong buy 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 CS Labs (Computer Systems, Greece) CS suits GPU VRAM/MOSFET thermal pad replacement and laptop thin-GPU repairs, though it is not the pick for CPU IHS-to-cooler mounting and gaps thicker than a few millimeters. 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 CS Labs (Computer Systems, Greece) CS (5.7/10): A viscous putty-style pad replacement, a niche option for gap-filling rather than a typical CPU paste.
What 3M Thermally Conductive Acrylic Interface and CS Labs (Computer Systems, Greece) CS have in common
The common ground is wider than the gap: electrical conductivity are identical here.
Specs and benchmarks
Brand
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- 3M
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- CS Labs
Model
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- 5590H
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- K5-PRO
Thermal Conductivity
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- 2.08 W/mK (ASTM D5470)
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- >5.3 W/mKBest
Electrical Conductivity
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Insulating
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- 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
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- 20g jar; also sold as 3x10g twist-up tubes and in bulk up to 400g
Recommended Use
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Battery cooling, power electronics and HMI displays (general electronics gap filling)
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- Thermal pad replacement for GPU VRAM/MOSFETs and laptop hot spots, not a CPU IHS-to-cooler paste
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
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- https://computer-systems.gr/products/k5-pro-20g/
Paste Segment
- 3M Thermally Conductive Acrylic Interface Pad 5590H
- Pad
- CS Labs (Computer Systems, Greece) CS Labs K5-Pro
- 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 CS Labs (Computer Systems, Greece) CS Labs K5-Pro if you want the higher thermal conductivity (>5.3 W/mK vs 2.08 W/mK (ASTM D5470)).
Price comparison
| Retailer | 3M Thermally Conductive Acrylic Interface Pad 5590H | CS Labs (Computer Systems, Greece) CS Labs K5-Pro |
|---|---|---|
| Amazon | View on Amazon | View on Amazon |
| Newark | View on Newark | |
| CS Labs / Computer Systems (Manufacturer) | View on CS Labs / Computer Systems (Manufacturer) | |
| Newegg | View on Newegg |
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.
CS Labs (Computer Systems, Greece) CS Labs K5-Pro
5.7 / 10 Expert Rating
A viscous putty-style pad replacement, a niche option for gap-filling rather than a typical CPU paste.




