JOYJOM 2 Pack 30x30x0.25mm PTM7950 vs JOYJOM 2 Pack 20x30x0.25mm PTM7950 (2026): Key Differences
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This comparison covers the joyjom 2 pack 30x30x0 25mm ptm7950 vs 2 pack 20x30x0 25mm ptm7950. Both are phase-change thermal pads with 8.5 W/mK conductivity. They share identical material properties and included accessories. The main difference is the footprint. One offers a square 30x30mm shape. The other provides a rectangular 20x30mm shape. You should choose based on the surface area you need to cover.
Key differences
| Aspect | JOYJOM PTM7950 30x30x0.25mm Thermal Pad | JOYJOM 20x30x0.25mm PTM7950 Thermal Pad |
|---|---|---|
| Dimensions | 30x30x0.25mm | 20x30x0.25mm |
| Width | 1.18 inches | 1.57 inches |
| Length | 1.18 inches | 0.79 inches |
| Weight | 1.41 ounces | 1.76 ounces |
Which one should you choose?
Choose JOYJOM PTM7950 30x30x0.25mm Thermal Pad if
- You need a square pad to cover a wider heat source.
- You want the lighter option for minimal weight impact.
- Your component fits better within a 30mm square boundary.
Choose JOYJOM 20x30x0.25mm PTM7950 Thermal Pad if
- You need a rectangular pad for a longer, narrower surface.
- You are covering a component that is 30mm long but narrower.
- You prefer the slightly heavier pad for potentially more material coverage.
Verdict: Choose the 30x30mm pad if your heat source is square or requires a wider contact area. Pick the 20x30mm pad if you need to cover a longer, narrower component. Both deliver the same thermal performance and installation experience.
30x30 vs 20x30 PTM7950 Comparison
Footprint dimensions
The JOYJOM PTM7950 30x30x0.25mm Thermal Pad measures 30 by 30 millimeters. This square shape covers a larger surface area. The JOYJOM 20x30x0.25mm PTM7950 Thermal Pad measures 20 by 30 millimeters. This rectangular shape covers a smaller surface area. Both pads share the same thickness of 0.25 millimeters. You need to match the pad size to your component. The square pad fits larger integrated-circuit devices better. The rectangular pad fits narrower components more precisely. Choose the shape that matches your hardware layout.
Thermal conductivity
Both pads use Phase-Change Material with 8.5 W/mK thermal conductivity. This rating indicates how well heat moves through the pad. The JOYJOM PTM7950 30x30x0.25mm Thermal Pad has this rating. The JOYJOM 20x30x0.25mm PTM7950 Thermal Pad has this rating too. The material melts at 45°C to fill gaps. It solidifies when cool to maintain contact. Both products offer the same heat transfer speed. You get identical thermal performance from either size. The difference lies only in the physical coverage area. Thermal conductivity remains constant across both options.
Thermal impedance
Both pads maintain low thermal impedance below 0.04 °C·cm²/W without a shim. This metric shows how little resistance exists between the heat source and sink. The JOYJOM PTM7950 30x30x0.25mm Thermal Pad achieves this low impedance. The JOYJOM 20x30x0.25mm PTM7950 Thermal Pad achieves this low impedance as well. Lower impedance means better heat dissipation. Both products use the same proprietary PTM7950 material. This material ensures long-term reliability for high-performance devices. You do not need to worry about impedance differences between the two sizes.
Package contents
Both packages include identical accessories for installation. Each pack contains two thermal pads. You also get a screwdriver and a cleaning wipe. A spatula helps with precise placement. Finger gloves protect your hands during handling. Adhesive pull tabs assist with film removal. A cleaning brush prepares the surface. The JOYJOM PTM7950 30x30x0.25mm Thermal Pad includes these items. The JOYJOM 20x30x0.25mm PTM7950 Thermal Pad includes these items too. You receive the same tools regardless of the pad size you choose.
Physical weight
The JOYJOM PTM7950 30x30x0.25mm Thermal Pad weighs 1.41 ounces. The JOYJOM 20x30x0.25mm PTM7950 Thermal Pad weighs 1.76 ounces. The rectangular pad is heavier than the square pad. This difference comes from the material volume distribution. Both weights are minimal for thermal pads. You do not need to worry about strain on components. The weight difference does not affect thermal performance. You can handle either pad with the included gloves. The heavier pad simply contains more material in its rectangular shape.
Choose the right PTM7950 size for your needs
Users with large square heat sources
The 30 by 30 millimeter footprint covers more surface area. This square shape is ideal for larger integrated-circuit devices. It provides broader coverage for high-performance components. The 8.5 W/mK conductivity ensures efficient heat transfer. Choose this pad if your component requires a wider contact area for optimal thermal performance.
Users with narrow rectangular heat sources
The 20 by 30 millimeter footprint fits narrower components. This rectangular shape is better for smaller integrated-circuit devices. It minimizes excess material around the heat source. The 8.5 W/mK conductivity ensures efficient heat transfer. Choose this pad if your component has a smaller or elongated surface requiring precise coverage.
Users needing precise thermal impedance
Both pads maintain low thermal impedance under 0.04 °C·cm²/W. The 30 by 30 millimeter size offers more uniform pressure distribution. This helps minimize interfacial thermal resistance across a wider area. The phase-change material adapts to surface irregularities. Select this option for consistent performance on larger integrated-circuit devices where uniform contact is critical.
Users needing precise thermal impedance
Both pads maintain low thermal impedance under 0.04 °C·cm²/W. The 20 by 30 millimeter size offers targeted coverage. This reduces material waste on smaller components. The phase-change material adapts to surface irregularities. Select this option for consistent performance on smaller integrated-circuit devices where space is limited and precise placement is required.
The products compared
JOYJOM PTM7950 30x30x0.25mm Thermal Pad
Best for: large integrated circuit heat dissipation
- Compatible Device
- CPU, GPU, SSD
- Dimensions
- 30x30x0.25mm
- Features
- Thermal Pad
- Weight
- 1.41 ounces
View on Amazon: JOYJOM PTM7950 30x30x0.25mm Thermal Pad Affiliate link
This JOYJOM kit includes two 30x30x0.25mm PTM7950 phase-change thermal pads. The material offers 8.5 W/m·K thermal conductivity and activates at 45°C. It targets integrated-circuit devices with low thermal impedance. The package provides tools like a screwdriver, cleaning wipes, and spatula for installation. You get precise sizing for larger chips. This setup suits users needing high-performance heat transfer for specific electronic components.
Pros
- 8.5 W/m·K thermal conductivity
- Phase-change material activates at 45°C
- Low thermal impedance under 0.04 °C·cm²/W
- Includes installation tools and cleaning supplies
Cons
- Requires professional handling skills
- Specific 30x30mm size limits compatibility
- Needs refrigeration for easier film removal
Good fit if
- You need pads for large integrated circuits
- You want high thermal conductivity
- You have installation experience
Skip if
- You require 20x30mm dimensions
- You lack technical know-how
- You prefer pre-cut smaller pads
Verdict: JOYJOM 30x30x0.25mm PTM7950 Thermal Pad fits users covering large chips with high heat output. It delivers reliable performance for those comfortable with precise manual installation.
JOYJOM 20x30x0.25mm PTM7950 Thermal Pad
Best for: smaller integrated circuits with included tools
- 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 2-pack of JOYJOM thermal pads uses Phase Change Material (PCM) with 8.5 W/m·K conductivity. The 20x30x0.25mm size fits integrated-circuit devices. It melts at 45°C to fill gaps, then solidifies for low thermal impedance. The package includes tools like a screwdriver and cleaning wipes. You need proper installation skills. This option suits users needing precise fit for smaller components.
Pros
- High thermal conductivity of 8.5 W/m·K
- Phase-change material melts at 45°C
- Includes installation tools and cleaning wipes
- Low thermal impedance under 0.04°C·cm²/W
Cons
- Smaller 20x30mm size limits coverage area
- Requires professional installation skills
- Specific 0.25mm thickness may not fit all gaps
Good fit if
- You need pads for smaller integrated circuits
- You want included installation tools
- You prefer phase-change material reliability
Skip if
- You require larger 30x30mm coverage
- You lack experience with thermal pad installation
- You need pads thicker than 0.25mm
Verdict: JOYJOM 20x30x0.25mm PTM7950 Thermal Pad fits users with smaller integrated circuits who want included tools. It offers strong conductivity but demands careful installation.
Specifications side by side
| Spec | JOYJOM PTM7950 30x30x0.25mm Thermal Pad | JOYJOM 20x30x0.25mm PTM7950 Thermal Pad |
|---|---|---|
| Compatible Device | CPU, GPU, SSD | CPU, GPU, Steam Deck, ROG Ally, SSD |
| Dimensions | 30x30x0.25mm | 20x30x0.25mm |
| Features | Thermal Pad | Thermal Pad |
| Weight | 1.41 ounces | 1.76 ounces |
Frequently asked questions
Which thermal pad is better for large VRM heat spreaders?
The 30x30mm model is the better choice for large heat spreaders. Its square footprint covers a larger surface area than the rectangular option. This provides broader coverage for high-performance components that generate significant heat. It fits users comfortable with precise manual installation for large chips.
Does the 20x30mm pad come with installation tools?
Yes, the 20x30mm pad includes tools for installation. This makes it suitable for users with smaller integrated circuits who want assistance during application. While it offers strong thermal conductivity, the included accessories help manage the careful installation process required for this specific size.
What is the thickness of these JOYJOM pads?
Both pads share the same thickness specification. They are designed to be 0.25mm thick. This consistent dimension ensures they fit standard gaps between heat sources and heatsinks. The height is listed as 0.09 inches, which aligns with the 0.25mm measurement for proper contact.
How do the weights of the two pads compare?
The 30x30mm pad weighs 1.41 ounces. The 20x30mm pad is slightly heavier at 1.76 ounces. This difference in mass does not affect thermal performance, as both use identical phase-change material. You should choose based on footprint size rather than weight considerations.
Are these pads suitable for small integrated circuits?
The 20x30mm pad is specifically recommended for smaller integrated circuits. Its rectangular shape allows for precise placement on compact components. It offers strong conductivity while including tools to aid in the careful installation needed for these smaller, more delicate areas.
Can I use the 30x30mm pad on a small chip?
You can use the 30x30mm pad on small chips, but it may overhang. The square shape covers a larger surface area than the rectangular alternative. If your chip is significantly smaller than 30x30mm, the excess material might interfere with surrounding components or clearance.