6 Best Alternatives to the JIUWU 20x20mm Copper Pad Shim (2026)

How each alternative compares

NEW Games Order PS3 Copper Heatsink Shims

The NEW Games Order PS3 Copper Heatsink Shims target a specific niche: repairing overheating issues in Sony PlayStation 3 consoles. Unlike the standard 20 x 20 x 0.8mm JIUWU shim, this kit includes Arctic Silver 5 thermal paste and shims sized for the PS3 Fat and Slim models. It is a specialized repair solution rather than a general-purpose thermal pad. You should choose this if you are fixing a console with known thermal throttling. It gives up the versatility of standard desktop GPU or CPU sizing. The package dimensions are larger, reflecting the inclusion of paste and console-specific parts. It is not suitable for standard PC builds requiring generic copper shims.

JIUWU 15x15x0.8mm Copper Heatsink Shims

The JIUWU 15x15x0.8mm Copper Heatsink Shims share the same brand and material as the original but differ in footprint. This pad measures 15mm x 15mm x 0.8mm, making it smaller than the 20 x 20 x 0.8mm original. It is designed for tight laptop spaces where the larger pad would not fit. You should pick this if your GPU or CPU component has a smaller contact surface. It offers the same reliable thermal performance in a more compact form. The weight is lighter at 0.32 ounces compared to the 1.6 ounces of the 20mm version. It is ideal for laptop repairs where precise sizing is critical for proper heat transfer.

Uxcell 20mm Pure Copper Thermal Shim

The Uxcell 20mm Pure Copper Thermal Shim differs from the original by offering a thicker profile. While the JIUWU pad is 0.8mm, this Uxcell version is 1.0mm thick. It maintains the same 20 x 20mm footprint, making it a direct substitute for moderate gaps. You should choose this if your component has a larger thermal gap that the thinner original cannot bridge. It provides solid thermal performance for passive cooling in laptops and GPUs. The model number is a16012800ux0600. It is heavier at 2.82 ounces due to the extra copper mass. This thickness helps stabilize temperature in components that run hotter and require more thermal mass.

Honbay 15x15mm Copper Heatsink Pads

The Honbay 15x15mm Copper Heatsink Pads offer a range of thicknesses for precise gap filling. Unlike the single 0.8mm thickness of the original, this kit includes multiple sizes to fit various laptop gaps. The footprint is 15mm x 15mm, which is smaller than the 20 x 20mm original. It is best for laptop repairs where exact thickness matters more than standard desktop sizes. You should pick this if you need to customize the thermal bridge for a specific component. It is versatile for GPU and CPU applications in compact devices. The package weighs 4 ounces, indicating a multi-pack. It sacrifices the larger surface area of the original for greater adaptability in tight spaces.

Alphacool 10 x 10mm Copper RAM Heatsinks

The Alphacool 10 x 10mm Copper RAM Heatsinks are designed for small components like RAM and Mosfets. They are significantly smaller than the 20 x 20mm original, measuring only 10 x 10mm. This 10-pack provides targeted passive cooling for areas where the larger pad would not fit. You should choose this if your build has tight spaces requiring small copper surfaces for heat dissipation. It is not suitable for main CPU or GPU cooling. The model number is 17426. The package weighs 0.07 kilograms. It offers reliable thermal performance for small components without adding noise or power draw. It is a specialized solution for auxiliary cooling rather than primary processor cooling.

Alphacool 14 x 14mm Copper Heatsinks 10-Pack

The Alphacool 14 x 14mm Copper Heatsinks 10-Pack is another option for small component cooling. It measures 14 x 14mm, which is smaller than the 20 x 20mm original but larger than the 10mm version. It provides reliable passive cooling for RAM or Mosfets. You should pick this if you need targeted heat dissipation for small components in tight spaces. It fits users who require more surface area than the 10mm pads but less than the original. The model number is 17427. The package weighs 3.84 ounces. It is designed for passive cooling, meaning it adds no noise or power consumption. It is ideal for auxiliary cooling spots where standard thermal pads are too large.

Quick picks

Our 7 picks

1 Best overall

JIUWU 20x20mm Copper Pad Shim

Best for: Standard 20mm GPU and CPU heat dissipation

Material

copper

Compatible Device

IC chipsets, GPUs, and CPUs

Dimensions

20 x 20 x 0.8mm

Length

0.79 inches

Width

0.79 inches

Weight

1.6 ounces

View on Amazon: JIUWU 20x20mm Copper Pad Shim Affiliate link

This JIUWU thermal shim uses high-purity copper to improve heat dissipation for IC chipsets, GPUs, and CPUs. The 20 x 20 x 0.8mm size fits many standard components. Copper offers excellent thermal conductivity to prevent overheating. You get a versatile pad for laptops or desktops. This kit helps ensure stable performance by transferring heat away from sensitive areas effectively.

Pros

• Made of high-performance copper for excellent thermal conductivity
• 20 x 20 x 0.8mm dimensions fit many GPUs and CPUs
• Versatile design works for laptops and other heat-sensitive devices
• Helps prevent overheating and ensures stable performance

Cons

• 0.8mm thickness may not fit tight clearance spaces
• Sold as a single pad rather than a bulk assortment
• No adhesive backing mentioned for easy installation

Good fit if

• You need a 20 x 20mm shim for a GPU or CPU
• Your device has enough clearance for 0.8mm thickness
• You want pure copper for maximum heat transfer

Skip if

• You require pre-applied adhesive for quick installation
• You need a thinner 0.3mm or 0.5mm shim
• You want a multi-size assortment kit

Verdict: JIUWU 20x20mm Copper Thermal Shim provides reliable heat dissipation for components that fit its specific 20 x 20 x 0.8mm footprint. It is a solid choice for users who need a pure copper pad for standard GPU or CPU heatsink applications.

2 Best premium

NEW Games Order PS3 Copper Heatsink Shims

Best for: PlayStation 3 overheating repairs

Material

100% copper

Compatible Device

Sony Playstation 3 PS3 Fat Slim

Dimensions

6.7 × 4.1 × 1.4 inches

Weight

1 pounds

View on Amazon: NEW Games Order PS3 Copper Heatsink Shims Affiliate link

This kit includes two 42mm by 42mm copper shims and a 3.5g tube of Arctic Silver 5 thermal paste. The shims are 1.2mm thick and made of 100% copper. They fit between the CPU or GPU and the heatsink in Sony PlayStation 3 consoles. This setup helps improve cooling efficiency for both Fat and Slim PS3 models. You get the necessary materials to repair overheating issues directly.

Pros

• Includes 1.2mm thick 42mm copper shims
• Contains 3.5g tube of Arctic Silver 5
• Made of 100% pure copper
• Compatible with PS3 Fat and Slim models

Cons

• Specific to PlayStation 3 consoles only
• Shim size is 42mm, larger than standard PC shims
• Includes only two shims per kit

Good fit if

• You own a Sony PlayStation 3 console
• You need to repair YLOD or overheating issues
• You want a complete kit with thermal paste

Skip if

• You are building a standard desktop PC
• You need shims for laptop GPUs
• You require multiple shims for other devices

Verdict: Sony PS3 Copper Shim with Arctic Silver 5 is a specialized repair kit for PlayStation 3 owners. It provides the exact copper shims and paste needed to fix cooling problems in Fat and Slim models.

3 Best budget

JIUWU 15x15x0.8mm Copper Heatsink Shims

Best for: small laptop GPU and CPU thermal gaps

Material

High Purity Copper

Compatible Device

Laptop GPU and CPU

Dimensions

15mm x 15mm x 0.8mm

Length

0.59 inches

Width

0.59 inches

Weight

0.32 ounces

View on Amazon: JIUWU 15x15x0.8mm Copper Heatsink Shims Affiliate link

This pack of 20 copper pads measures 15mm by 15mm with a thickness of 0.8mm. You get high purity copper material designed for efficient heat dissipation on laptop GPUs and CPUs. The dimensions offer a compact footprint suitable for smaller components. This option provides a reliable thermal interface for your internal hardware cooling needs.

Pros

• High purity copper material for effective heat transfer
• Compact 15mm x 15mm size fits small areas
• 0.8mm thickness balances contact and clearance
• Includes 20 pads for multiple replacement needs

Cons

• Smaller 15mm x 15mm footprint than the 20mm alternatives
• No pre-applied adhesive backing listed in specifications
• Not compatible with larger GPU VRM heatsinks

Good fit if

• You need smaller 15mm pads for tight laptop spaces
• You require high purity copper for better conductivity
• You want a bulk pack for multiple repairs

Skip if

• You need the larger 20mm size for your heatsink
• You want pre-applied adhesive for easier installation
• You are cooling a desktop GPU with large VRMs

Verdict: JIUWU 15mm High Purity Copper Heatsink fits users needing smaller 15mm pads for tight laptop spaces. It offers reliable thermal performance for compact GPU and CPU components.

4 Also great

Uxcell 20mm Pure Copper Thermal Shim

Best for: Moderate gap thermal bridging

Material

Pure Copper

Compatible Device

PC, Laptop CPU, GPU

Dimensions

0.79 x 0.79 x 0.04 inches

Mounting Type

Thermal Shim Pad

Length

0.79 inches

Width

0.79 inches

View on Amazon: Uxcell 20mm Pure Copper Thermal Shim Affiliate link

This Uxcell copper pad measures 20 by 20 by 1.0 millimeters. It is made from pure copper for high thermal conductivity. The 1.0mm thickness acts as a gap filler for CPUs, GPUs, and laptop components. You get five pieces in the package. This size suits devices with moderate spacing needs.

Pros

• Pure copper material for efficient heat dissipation
• 20x20x1.0mm dimensions fit standard thermal gaps
• Package includes 5 pieces for multiple uses
• Lightweight at 19g net weight

Cons

• 1.0mm thickness is thicker than the 0.8mm option on the list
• No thermal adhesive included in the package
• Only 5 pieces per pack

Good fit if

• You need a 1.0mm gap filler for GPU or CPU heatsinks
• You want pure copper for reliable thermal conductivity
• You need multiple shims for a multi-device repair

Skip if

• You require a thinner 0.8mm shim for tight spaces
• You need pre-applied adhesive for easier installation
• You prefer a larger quantity than five pieces

Verdict: Uxcell 20x20x1.0mm Pure Copper Shim provides solid thermal performance for moderate gaps. It is a practical solution for users needing pure copper pads with a 1.0mm profile.

5 Also great

Honbay 15x15mm Copper Heatsink Pads

Best for: Laptop GPU and CPU gap filling

Material

Copper

Compatible Device

Laptop GPU CPU

Dimensions

15*15mm

Weight

4 ounces

View on Amazon: Honbay 15x15mm Copper Heatsink Pads Affiliate link

This Honbay kit provides 25 copper pads in a 15x15mm footprint. You get five thicknesses: 0.3mm, 0.5mm, 0.8mm, 1mm, and 1.2mm. The pure copper material helps transfer heat from laptop GPUs and CPUs to heatsinks. This variety lets you fill small gaps precisely. It is a practical solution for upgrading thermal contact on specific components.

Pros

• Includes 25 pads for multiple repairs
• Five distinct thickness options from 0.3mm to 1.2mm
• 15x15mm size fits standard laptop components
• Pure copper material for heat dissipation

Cons

• Smaller 15x15mm size than the 20x20mm standard
• Requires manual installation without pre-applied adhesive
• Not designed for desktop CPU coolers

Good fit if

• You need to fill small gaps between chips and heatsinks
• You are working on a laptop GPU or CPU
• You require multiple thicknesses for different components

Skip if

• You need larger 20x20mm pads for desktop parts
• You want pre-applied adhesive for easier installation
• You are cooling a large desktop processor

Verdict: Honbay 15x15mm Copper Thermal Pads offers a versatile range of thicknesses for precise gap filling. It is best for laptop repairs where exact thickness matters more than standard desktop sizes.

6 Also great

Alphacool 10 x 10mm Copper RAM Heatsinks

Best for: small RAM and Mosfet cooling spots

Material

Solid copper

Cooling Method

Passive

Compatible Device

GPU RAM, VRam, voltage converters

Dimensions

10 x 10 mm

Weight

0.07 kilograms

View on Amazon: Alphacool 10 x 10mm Copper RAM Heatsinks Affiliate link

This Alphacool pack includes ten 10 x 10mm copper passive heatsinks. The material is pure copper, which conducts heat well for Mosfets or RAM modules. The compact size fits tight spaces where larger shims do not work. You get a 10-pack for multiple application points. This option suits builds needing small, dedicated cooling surfaces for specific components.

Pros

• Made from pure copper for efficient heat transfer
• Compact 10 x 10mm dimensions fit tight areas
• Pack includes ten units for multiple applications
• Designed specifically for GPU RAM and Mosfets

Cons

• Smaller 10 x 10mm size limits surface area
• Passive cooling requires airflow to function
• No adhesive or mounting hardware included

Good fit if

• You need small heatsinks for RAM modules
• You are cooling Mosfets in tight spaces
• You want pure copper passive cooling

Skip if

• You require larger 15 x 15mm shims
• You need pre-applied adhesive backing
• You want active cooling with fans

Verdict: Alphacool 10x10mm Copper Heatsink 10-Pack provides targeted passive cooling for small components like RAM and Mosfets. You should buy this if your build has tight spaces requiring 10 x 10mm copper surfaces.

7

Alphacool 14 x 14mm Copper Heatsinks 10-Pack

Best for: small passive cooling for RAM and Mosfets

Material

Solid copper

Cooling Method

Passive

Compatible Device

GPU RAM, VRam, voltage converters

Dimensions

14 x 14 mm

Weight

3.84 ounces

View on Amazon: Alphacool 14 x 14mm Copper Heatsinks 10-Pack Affiliate link

This is a passive copper heatsink designed for GPU RAM and Mosfets. The fins measure 14 by 14 millimeters. The pack contains ten units. It helps dissipate heat from small components without needing a fan. You should use it if you need precise coverage for memory modules or voltage regulators on your graphics card or motherboard.

Pros

• Made from pure copper for efficient heat transfer
• Compact 14 by 14 millimeter footprint
• Passive design requires no power or noise
• Includes ten heatsinks for multiple components
• Compatible with GPU RAM and Mosfets

Cons

• Smaller 14x14mm size limits coverage area
• Passive cooling only, no active fan support
• No adhesive or thermal pad included in data

Good fit if

• You need to cool specific RAM modules
• You are upgrading VRM cooling on a motherboard
• You require small passive heatsinks for tight spaces

Skip if

• You need active cooling with a fan
• You require larger heatsinks for high-end GPUs
• You want pre-applied thermal adhesive

Verdict: Alphacool 14x14mm Copper Heatsink offers reliable passive cooling for small components. It fits users who need targeted heat dissipation for RAM or Mosfets without adding noise or power draw.

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