How to Replace a Thermal Pad on a GPU: Step-by-Step Guide for South Africans

Overview: Why Replace GPU Thermal Pads?

A GPU's thermal pad is a compressible material that fills microscopic gaps between the card's processing chip (GPU die) or memory chips and its heatsink. Over time, thermal pads can dry out, compress, or lose effectiveness, causing the GPU to overheat. Signs such as sudden thermal throttling, persistent crashes under load, or visible wear on the pad's surface indicate the need for replacement-especially in South Africa's warmer months or after heavy workloads like gaming and mining.

Unlike thermal paste, which is ideal for direct die contact, thermal pads are designed for components where thicker gaps exist, like GDDR modules and certain VRMs. Local South African GPU owners often face limited access to brand-specific pads, so knowing cross-compatibility and having reliable local stock is crucial for school labs, repair shops, and serious hobbyists.

Specifications & Types of Thermal Pads

Higher thermal conductivity pads are generally better at heat transfer, but flexibility and proper thickness are just as important for good contact. Some popular, widely compatible brands and sheet sizes (e.g., Akasa 120 x 20mm) are stocked locally at Communica.

Essential Tools & Preparations

• Phillips and Torx screwdrivers (check your GPU for screw types)
• Isopropyl alcohol wipe or electronics cleaner
• Plastic spudger or prying tool
• Precision caliper or steel ruler (to measure pad thickness)
• ESD wrist strap or anti-static mat (strongly recommended)
• Thermal pad sheet (cut to fit; thickness as required)

Power off your PC and unplug it. Work on a clean, static-safe surface before proceeding. For students or first-time upgraders, consider filming the disassembly for reference-many SA gamers and service technicians use this trick to avoid losing track of screws or order of assembly.

How to Replace the GPU Thermal Pad: Step-by-Step

1. Remove the GPU from Your PC
   Unplug the PCIe power connectors and carefully unscrew the GPU from its bracket and slot. Place it on your anti-static workspace.
2. Disassemble the Graphics Card
   Unscrew all visible heatsink screws (usually around the PCB edge and backplate). Separate the cooler from the PCB gently, using a spudger for stubborn plastic clips if needed. Note: Some fan or LED cables may be attached-disconnect carefully.
3. Identify and Remove Old Thermal Pads
   Gently peel away old pads from memory chips and VRMs. Remove any stuck residue with a lint-free wipe dampened with isopropyl alcohol.
4. Measure and Cut New Thermal Pads
   Using your caliper, confirm pad thickness matches the original (if in doubt, 1 mm is common for many modern GPUs, but always verify). Cut the replacement pads with clean scissors or a craft blade-match the length and width to the components.
5. Apply the New Pads
   Lay the pads flat with no wrinkles or overhangs-make sure each chip is fully covered, but don't let the pad stick out and touch surrounding circuitry. Avoid stacking multiple pads unless specifically required by your card.
6. Reassemble the Cooler
   Reconnect any fan/LED headers, align the heatsink, and re-screw the assembly tightly but not excessively (overtightening can crack the GPU).
7. Test Your GPU
   Reinstall the GPU, reconnect power, and boot up. Run monitoring software to check idle and load temperatures-expect similar or cooler temps compared to your previous readings.

Practical Local Notes

• Communica stocks a range of thermal management products-check for Akasa, Arctic, or generic pads in-cut sheets or bulk rolls.
• Branch collection is available in Samrand (Centurion), Pretoria, and Cape Town; check branches & trading hours for convenient pickup.
• Most students upgrading gaming rigs or working on e-waste projects find 1 mm pads fit a wide range, but always confirm sizing before visiting a branch to avoid returns.

Troubleshooting: Common Issues & Solutions

• GPU runs hotter after replacement: Double-check pad thickness and make sure all chips are covered-too thin or misaligned pads can reduce contact.
• Fan noise increases: Higher temps may cause faster fan speeds-verify correct pad application and heatsink seating.
• GPU not detected: Ensure ribbon/fan cables are plugged in and no PCB traces are shorted by pad overhangs.

Example Calculation: Pad Size for a GTX 1070

Suppose your GTX 1070 uses 1.0 mm thick memory pads across eight modules (each 10 mm x 10 mm). You'll need:
Quantity: 8 pieces
Size per piece: 10 x 10 x 1 mm
Total needed area: 8 x 10 x 10 = 800 mm2
To cover with a 120 x 20 mm Akasa sheet, you'd have enough for one GPU (120 x 20 = 2400 mm2).

Sources

• Communica: Power & Thermal Management
• TechPowerUp: GPU VRAM Thermal Pad Replacement Guide
• Arctic Thermal Pad Datasheet
• GamersNexus: Thermal Pad Types & Reviews
• Communica: Branches & Trading Hours