JOYJOM 2mm Graphite-Coated Copper M.2 vs JOYJOM 2 Pack 20x30x0.25mm PTM7950: Spec Comparison
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We compare the joyjom nvme m 2 heatsink SSD vs 2 pack 20x30x0 25mm ptm7950 to clarify their roles. Both products manage heat for electronic components, but they serve different purposes. The first is a solid copper heatsink designed to dissipate heat from an SSD surface. The second is a phase-change thermal pad that fills gaps between a chip and a cooler. You need to understand these distinct functions to choose the right part for your build.
Key differences
| Aspect | JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink | JOYJOM 20x30x0.25mm PTM7950 Thermal Pad |
|---|---|---|
| Material | Pure Copper | Phase-Change Material (PCM) |
| Dimensions | 70x20x2mm | 20x30x0.25mm |
| Compatible Device | M.2 2280 SSD | Integrated-circuit devices |
| Thermal Conductivity | 401 W/mK (Copper) | 8.5 W/m·K |
| Included Tools | Thermal Pad, Rubber Rings, Bandages | Screwdriver, Cleaning Wipe, Spatula, Gloves, Tabs, Brush |
Which one should you choose?
Choose JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink if
- You need a rigid heatsink for an M.2 2280 SSD.
- You want high thermal conductivity from a solid metal block.
- You are cooling a laptop or PS5 SSD.
Choose JOYJOM 20x30x0.25mm PTM7950 Thermal Pad if
- You need a pad to fill gaps between a chip and a cooler.
- You require a material that melts at 45°C for better contact.
- You are working on integrated-circuit devices.
Verdict: The JOYJOM 2mm Graphite-Coated Copper M.2 is the correct choice for cooling an SSD directly. The JOYJOM PTM7950 Thermal Pad is designed for filling thermal gaps between components. Select the product that matches your specific hardware requirement.
Copper Heatsink vs Phase Change Pad
primary function
JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink is a solid thermal sink made of pure copper with a graphite coating. It is designed to attach directly to M.2 2280 SSDs to dissipate heat into the surrounding air. In contrast, the JOYJOM 20x30x0.25mm PTM7950 Thermal Pad is a phase-change material sheet. It acts as a thermal bridge to transfer heat from a component to another surface, such as a chassis or another heatsink. One product moves heat away via mass and surface area, while the other transfers heat through contact.
thermal conductivity
The copper heatsink leverages the high thermal conductivity of pure copper, listed at 401 W/m·K. This material spreads heat rapidly across its structure. The graphite coating further enhances surface dissipation. The PTM7950 thermal pad offers a thermal conductivity of 8.5 W/m·K. While lower than copper, this phase-change material maintains low thermal impedance below 0.04 °C·cm²/W. It excels at filling microscopic gaps to ensure efficient heat transfer between two surfaces rather than radiating heat into the air.
compatible device
The copper heatsink is specifically engineered for M.2 2280 SSDs. It fits laptops, desktop computers, and the PS5, provided there is adequate clearance for its 2mm height. The PTM7950 pad is designed for integrated-circuit devices. It is not a standalone heatsink but a component used to bridge heat sources to other cooling surfaces. You must pair the pad with a secondary cooling solution. The heatsink is a complete unit for SSDs, while the pad is a transfer medium for various electronics.
dimensions
The copper heatsink measures 70x20x2mm, or 2.76x0.79x0.08 inches. It is longer and wider but thicker than the pad. The PTM7950 pad measures 20x30x0.25mm, or 0.79x1.57x0.09 inches. It is significantly thinner, making it ideal for tight spaces where a rigid heatsink would not fit. The pad is also smaller in overall surface area compared to the long strip of the copper heatsink. Choose based on the physical space available around your component.
included accessories
The copper heatsink package includes one heatsink, one thermal pad, rubber rings, and bandages for securing it. The PTM7950 package includes two thermal pads, a screwdriver, a cleaning wipe, a spatula, finger gloves, adhesive pull tabs, and a cleaning brush. The pad kit provides more installation tools, including cleaning supplies and precision instruments. The heatsink kit provides only the basic mounting materials. The pad package is more comprehensive for installation preparation.
Choose the right JOYJOM thermal solution
Users needing an SSD heatsink for laptops
This product is a solid 2mm pure copper heatsink with a graphite coating. It fits M.2 2280 SSDs and includes a thermal pad and rubber rings. The copper material offers high thermal conductivity at 401 W/mK. This design helps dissipate heat effectively from your drive. It is the correct choice if you need a physical heatsink structure rather than just a pad.
Users seeking high-performance phase change material
This option uses PTM7950 phase-change material with 8.5 W/m·K conductivity. It melts at 45°C to fill gaps and solidifies when cool. The thermal impedance is under 0.04 °C·cm²/W. It comes in a 2-pack with installation tools like a screwdriver and cleaning wipes. This is ideal if you need advanced thermal interface material for integrated circuits.
Buyers wanting a complete installation kit
The PTM7950 pack includes a screwdriver, cleaning wipe, spatula, finger gloves, adhesive pull tabs, and a cleaning brush. This comprehensive set supports proper installation of the phase-change pads. The JOYJOM copper heatsink includes a thermal pad and bands but lacks the detailed tool set. Choose this if you prefer a full accessory package for your upgrade.
The products compared
JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink
Best for: Laptop M.2 2280 SSD cooling
- Material
- Pure Copper
- Compatible Device
- M.2 2280 SSD, Laptop, PS5
- Dimensions
- 70x20x2mm
- Features
- Thermal Pad
- Weight
- 1.06 ounces
View on Amazon: JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink Affiliate link
This JOYJOM heatsink uses pure copper covered in graphite for M.2 2280 SSDs. The 70x20x2mm size fits laptops and PS5 units with limited clearance. Pure copper conducts heat at 401 W/mK, outperforming aluminum alloys. It includes a silicon grease thermal pad and rubber bands. The design aims for a 10-30°C temperature drop to prevent throttling. It is a practical solution for cooling compact storage drives.
Pros
- Pure copper construction for high thermal conductivity
- 2mm thickness ideal for tight laptop spaces
- Includes thermal pad and rubber bands
- Graphite coating enhances heat dissipation
Cons
- Limited to M.2 2280 form factor
- Cooling effect varies by environment
- Red copper may show through graphite coating
Good fit if
- You need a low-profile heatsink for a laptop
- You want pure copper for better heat transfer
- You have a PS5 with space constraints
Skip if
- You require a 4mm heatsink for desktops
- You need compatibility with M.2 2230 drives
- You prefer aluminum over copper material
Verdict: JOYJOM Graphite Copper M.2 Heatsink 2mm is a solid choice for laptop users needing a thin, high-conductivity cooling solution for M.2 2280 SSDs.
JOYJOM 20x30x0.25mm PTM7950 Thermal Pad
Best for: Low impedance IC heat dissipation
- Compatible Device
- CPU, GPU, Steam Deck, ROG Ally, SSD
- Dimensions
- 20x30x0.25mm
- Features
- Thermal Pad
- Weight
- 1.76 ounces
View on Amazon: JOYJOM 20x30x0.25mm PTM7950 Thermal Pad Affiliate link
This JOYJOM product is a 2-pack of 20x30x0.25mm phase-change thermal pads. It uses PTM7950 material with 8.5 W/m·K conductivity. The pad melts at 45°C to fill gaps, reducing thermal impedance below 0.04 °C·cm²/W. It suits integrated circuit devices needing reliable heat dissipation. You get tools for installation. It is a practical option for high-performance components requiring low interfacial resistance.
Pros
- High thermal conductivity of 8.5 W/m·K
- Phase-change material melts at 45°C for gap filling
- Low thermal impedance under 0.04 °C·cm²/W
- Includes screwdriver, cleaning wipe, and spatula
Cons
- Requires professional installation skills
- Needs refrigeration for easier film peeling
- Limited to 20x30mm dimensions
Good fit if
- You need low thermal impedance for ICs
- You can handle phase-change material installation
- You require 8.5 W/m·K conductivity
Skip if
- You prefer pre-applied thermal pads
- You lack installation tools
- You need larger than 20x30mm size
Verdict: JOYJOM PTM7950 20x30mm Thermal Pad fits users needing low impedance for integrated circuits who can manage precise installation.
Specifications side by side
| Spec | JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink | JOYJOM 20x30x0.25mm PTM7950 Thermal Pad |
|---|---|---|
| Material | Pure Copper | not stated |
| Compatible Device | M.2 2280 SSD, Laptop, PS5 | CPU, GPU, Steam Deck, ROG Ally, SSD |
| Dimensions | 70x20x2mm | 20x30x0.25mm |
| Features | Thermal Pad | Thermal Pad |
| Weight | 1.06 ounces | 1.76 ounces |
| Color | Black | not stated |
| Model | 70x20x2mm | not stated |
Frequently asked questions
Can I use the JOYJOM PTM7950 pad on an M.2 SSD?
No. The PTM7950 is a phase change thermal pad designed for low impedance integrated circuits, not for direct SSD cooling. The JOYJOM 2mm Graphite-Coated Copper Heatsink is the correct choice for M.2 2280 SSDs. It uses a copper base to dissipate heat into the air effectively.
What is the thickness of the JOYJOM copper heatsink?
The JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink is 0.08 inches thick. This equals approximately 2mm. Its thin profile makes it suitable for laptops and PS5 consoles where space is limited. It fits M.2 2280 SSDs directly.
Does the JOYJOM copper heatsink include a thermal pad?
Yes. The JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink features a built-in thermal pad. This pad sits between the copper heatsink and the SSD chip to ensure efficient heat transfer. It helps bridge any small gaps between the components.
What are the dimensions of the JOYJOM PTM7950 pad?
The JOYJOM 20x30x0.25mm PTM7950 Thermal Pad measures 0.79 inches in length and 1.57 inches in width. Its height is 0.09 inches. These dimensions make it ideal for covering specific integrated circuits rather than large SSD surfaces.
Is the JOYJOM copper heatsink made of aluminum?
No. The JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink is made of copper. Copper offers higher thermal conductivity than aluminum, allowing it to pull heat away from the SSD faster. The graphite coating further aids in heat dissipation.
Can the JOYJOM PTM7950 pad replace a heatsink?
No. The PTM7950 is a thermal interface material, not a heatsink. It manages heat transfer between components but does not dissipate heat into the air on its own. You need the copper heatsink to actively cool the SSD surface.
What is the weight of the JOYJOM copper heatsink?
The JOYJOM 2mm Graphite-Coated Copper M.2 Heatsink weighs 1.06 ounces. This weight comes from the solid copper construction. It is heavier than plastic alternatives but provides better thermal performance for demanding laptop or console environments.