4 Best Copper Pad Shim Kits That DIYers Actually Trust

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You’re upgrading your device’s cooling system, and you need reliable copper pad shims to manage heat effectively. The right kit depends on your specific hardware—whether you’re working with a PS3, laptop, or general thermal management project. Each option offers different thicknesses, sizes, and adhesive backing to match your needs. Understanding what separates these four trusted kits helps you choose the one that actually fits your setup.

Our Top Copper Pad Shim Kit Picks

Easycargo Copper Thermal Pad Shim Kit (100pcs) Easycargo 100pcs 12 sizes 15mm Copper Pad Shim Kit, Pure Best Variety PackThermal Conductivity: 401 W/mKPad Dimensions: 15mm x 15mmQuantity Included: 100 piecesVIEW LATEST PRICERead Our Analysis
Copper Pad Shim Thermal Kit 20x20x1.2mm (20-Pack) Copper Pad Shim Thermal Kit, IC Chipset GPU CPU Thermal Best Single SizeThermal Conductivity: Not specifiedPad Dimensions: 20mm x 20mmQuantity Included: 20 piecesVIEW LATEST PRICERead Our Analysis
Easycargo Copper Thermal Pad Kit for PS3 & Laptops Easycargo 4pcs 40mm Copper Pad Shim Thermal Kit, Cooler Copper Best Large FormatThermal Conductivity: 400 W/m·KPad Dimensions: 40mm x 40mmQuantity Included: 4 piecesVIEW LATEST PRICERead Our Analysis
MECCANIXITY Copper Heatsink Shim Thermal Pads (5-Pack) MECCANIXITY Heatsink Copper Sheet Shim, 0.3mm Thickness 20 x 20mm Best Adhesive-BackedThermal Conductivity: Not specifiedPad Dimensions: 20mm x 20mmQuantity Included: 5 piecesVIEW LATEST PRICERead Our Analysis

More Details on Our Top Picks

  1. Easycargo Copper Thermal Pad Shim Kit (100pcs)

    Easycargo 100pcs 12 sizes 15mm Copper Pad Shim Kit, Pure

    Best Variety Pack

    View Latest Price

    If you’re looking to fill thermal gaps on PC components, laptops, GPUs, or gaming consoles without breaking your budget, the Easycargo Copper Thermal Pad Shim Kit delivers 100 pure copper shims across 12 different thicknesses, giving you the flexibility to match almost any spacing requirement you’ll encounter. The kit includes 12 pieces each of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, and 0.6mm thicknesses, plus 5 pieces each of 0.8mm, 1.0mm, 1.2mm, 1.5mm, and 1.8mm sizes, and 3 pieces of 2.0mm. Each shim measures 15mm x 15mm. Made from pure copper C1100 with thermal conductivity rated at 401 W/mK, these pads efficiently transfer heat away from VGA cards, RAM, VRMs, IC chips, M.2 NVMe SSDs, and PS5 components. Simply select the appropriate thickness for your gap, position the shim between your component and heatsink, and secure it in place.

    • Thermal Conductivity:401 W/mK
    • Pad Dimensions:15mm x 15mm
    • Quantity Included:100 pieces
    • Thickness Options:12 different sizes (0.1mm to 2.0mm)
    • Primary Material:Copper C1100
    • Intended Applications:GPU, CPU, VGA, RAM, VRM, M.2 NVMe SSDs, PS5
    • Additional Feature:Twelve different thickness options
    • Additional Feature:Comprehensive 100-piece assortment
    • Additional Feature:Fits M.2 NVMe SSDs
  2. Copper Pad Shim Thermal Kit 20x20x1.2mm (20-Pack)

    Copper Pad Shim Thermal Kit, IC Chipset GPU CPU Thermal

    Best Single Size

    View Latest Price

    This 20-pack kit stands out for DIYers who need a straightforward thermal solution without complex modifications, since you’re getting pre-sized copper shims that work directly with both OEM stock heatsinks and aftermarket coolers. Each shim measures 20x20x1.2mm, fitting standard 2mm shim thickness requirements for GPU, CPU, and IC chipset applications. Installation requires applying a 1mm thermal pad onto your processor or graphics card, then positioning the copper shim to create a reliable thermal interface. The copper construction enables efficient heat transfer away from your components, enhancing cooling performance immediately. With twenty pieces included, you’ll have backups for multiple devices or future upgrades, making this kit a practical choice for maintaining your system’s thermal health long-term.

    • Thermal Conductivity:Not specified
    • Pad Dimensions:20mm x 20mm
    • Quantity Included:20 pieces
    • Thickness Options:Single thickness (1.2mm)
    • Primary Material:Copper
    • Intended Applications:GPU, CPU, IC chipset
    • Additional Feature:Works with OEM/aftermarket coolers
    • Additional Feature:Pre-sized 20x20mm format
    • Additional Feature:Includes thermal pad application
  3. Easycargo Copper Thermal Pad Kit for PS3 & Laptops

    Easycargo 4pcs 40mm Copper Pad Shim Thermal Kit, Cooler Copper

    Best Large Format

    View Latest Price

    Looking for a compact thermal solution that fits tight spaces in gaming consoles and laptops? The Easycargo kit provides four 40mm copper pad shims designed to transfer heat away from sensitive components. Each shim measures 40mm x 40mm x 0.5mm and conducts heat at 400 W/m·K, making it effective for CPU and GPU cooling. You’ll apply these pads between your heat source and heatsink to fill gaps and improve thermal contact. The kit works with development boards, laptop processors, and PS3 systems. Installation requires clean surfaces and careful positioning. These copper shims weigh just 7 grams per set, keeping your device lightweight while enhancing cooling performance in confined spaces.

    • Thermal Conductivity:400 W/m·K
    • Pad Dimensions:40mm x 40mm
    • Quantity Included:4 pieces
    • Thickness Options:Single thickness (0.5mm)
    • Primary Material:Copper
    • Intended Applications:Laptop GPU/CPU, PS3, thermoelectric modules
    • Additional Feature:Large 40mm x 40mm pads
    • Additional Feature:Compatible with thermoelectric modules
    • Additional Feature:Low-profile 0.5mm thickness
  4. MECCANIXITY Copper Heatsink Shim Thermal Pads (5-Pack)

    MECCANIXITY Heatsink Copper Sheet Shim, 0.3mm Thickness 20 x 20mm

    Best Adhesive-Backed

    View Latest Price

    For DIYers who need reliable thermal management on a budget, the MECCANIXITY 5-pack offers copper shims with adhesive backing that you can apply directly to overheating components. Each pad measures 20x20mm and reaches 0.3mm thickness, designed for GPUs, CPUs, memory modules, and bridge chips. The thermal conductive adhesive makes installation straightforward: peel the backing and press the pad onto your target hardware. Copper’s natural darkening won’t reduce cooling performance, though you can sand the surface if appearance concerns you. With five sets included, you’ll have enough coverage for multiple devices or future upgrades.

    • Thermal Conductivity:Not specified
    • Pad Dimensions:20mm x 20mm
    • Quantity Included:5 pieces
    • Thickness Options:Single thickness (0.3mm)
    • Primary Material:Copper with thermal conductive adhesive backing
    • Intended Applications:GPU, CPU, north/south bridge, memory modules, notebooks
    • Additional Feature:Thermal conductive adhesive backing
    • Additional Feature:High temperature resistance (160°C)
    • Additional Feature:Surface oxidation-resistant design

Factors to Consider When Choosing a Copper Pad Shim Kit

five factors for copper shim kits

When you’re selecting a copper pad shim kit, you’ll need to evaluate five key factors: verify that the shim’s dimensions match your specific hardware components, check the thermal conductivity rating (measured in W/m·K) to ensure it meets your cooling requirements, assess the material quality for durability and longevity, review what thickness options are available for your application, and confirm that the kit’s versatility covers the range of devices you plan to service. Start by measuring your component dimensions and comparing them against the product specifications, then cross-reference the thermal performance ratings with your device’s thermal design power (TDP) needs. Finally, determine whether you need a single-thickness kit or a variety pack that accommodates multiple installation scenarios.

Size And Dimensional Compatibility

How do you know which copper pad shim kit will actually fit your components? Start by measuring your contact areas—GPU, CPU, RAM, VRM, and M.2 modules all vary in size. Most kits offer common footprints: 15×15 mm, 20×20 mm, or 40×40 mm. Match the shim dimensions to your component’s contact surface to avoid gaps that reduce thermal transfer. Next, check the thickness range available. Kits typically span 0.1 mm to 2.0 mm to fill different gaps adequately. Verify the number of pieces at each thickness so you have enough for consistent layering across all components. Finally, confirm mounting hole spacing aligns with your heatsink contact surface. Kits with mixed sizes handle varying geometries better than single-size options.

Thermal Conductivity Performance Ratings

Thermal conductivity values determine how efficiently a copper pad shim transfers heat between your component and heatsink. Look for shims rated around 400 W/m·K, which indicate superior heat transfer capability compared to lower-conductivity alternatives. Check the material specification—pure copper C1100 maintains consistent conductivity across operating temperature ranges, guaranteeing reliable performance. Examine the shim’s thickness, surface area, and contact quality, as these factors directly affect thermal resistance. A thinner shim with larger surface area typically reduces thermal interface resistance more effectively. Verify that the shim fills gaps properly between surfaces, since poor contact quality diminishes real-world performance regardless of nominal conductivity ratings. Cross-reference the kit’s specifications against your component’s heat output requirements to guarantee adequate thermal management.

Material Quality And Durability

Beyond selecting the right thermal conductivity rating, you’ll need to evaluate the actual construction materials and long-term durability of your copper pad shim kit. Look for kits using high-purity copper (C1100 grade) that deliver consistent 401 W/mK thermal performance. Check that thickness options span from 0.1 mm to 2.0 mm, allowing proper gap-filling across different component interfaces. Verify the kit includes multiple pieces at each thickness—typically 12 sizes with several units per size—ensuring you won’t run short during repairs. Consider adhesive-backed options that secure shims firmly, preventing movement during thermal cycling. Note that copper naturally darkens when exposed to air; this surface oxidation doesn’t affect cooling capability. Prioritize kits demonstrating durability through consistent material quality and comprehensive sizing coverage.

Thickness Options And Variety

What thickness range actually covers most repair scenarios you’ll encounter? You’ll need shims spanning 0.1–2.0 mm to handle standard IC cooling gaps. Most kits organize thicknesses into 12 groups, with thinner options (0.1–0.6 mm) providing 12 pieces per thickness and thicker sizes (0.8–2.0 mm) offering 5 pieces each. The standard 15 mm x 15 mm shim size fits most processor cooling areas directly. For broader applications, select kits offering 0.5–2.0 mm ranges. If you’re working with 20×20 mm shims, expect 1.2 mm thickness specifications. Match your kit’s thickness variety to your specific repair needs—narrow gaps require finer increments, while larger gaps need thicker options available in sufficient quantity.

Application Scope And Versatility

Where you’ll actually use these shims determines which kit fits your repair work best. These pads work across GPUs, CPUs, RAM, VRMs, and M.2 SSDs in laptops, gaming consoles like PS5, and development boards. You’ll find them compatible with both OEM heatsinks and aftermarket cooling solutions, giving you flexibility in your thermal management setup. If you’re upgrading a laptop, you need smaller square pads around 15 mm. For desktop GPU repairs, 20 mm pads suit larger component footprints better. Consider what devices you’ll service most frequently—single-purpose kits work fine if you’re focused on one platform, but multi-application kits provide coverage across different projects. Match the kit’s component compatibility to your repair priorities.

Final Thoughts

You’ll find the right copper pad shim kit by matching your device’s needs to each option’s specifications. The 100-piece Easycargo kit handles multiple projects with varied thicknesses. Choose the 20x20x1.2mm pack for standard applications. Pick the PS3/Laptop kit for compact spaces. Select MECCANIXITY’s adhesive-backed shims when you need quick installation. Compare thermal conductivity ratings and dimensions against your cooling requirements before purchasing.

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