How to Clean a Graphics Card's Fans and Heatsink Safely, Step by Step

In this guide (10 sections)

• Does your card need cleaning?
• What you’ll need
• 1. Switch off and unplug everything
• 2. Decide whether to take the card out
• 3. Hold the fans and blow out the heatsink
• 4. Wipe the fan blades
• 5. Clean the case filters and other fans
• 6. Put it back and test
• How often should you clean it?
• Real cases: what other users ran into

Over months, dust collects on your graphics cardGPU (graphics card): The graphics card: the part that creates the picture you see on the monitor. More in our PC basics glossary →Close ✕’s fan blades and packs into the thin metal fins of the heatsinkHeatsink: A block of metal fins that pulls heat away from a chip. Fans blow air through it. More in our Cooling & noise glossary →Close ✕ underneath. Less air gets through, so the card runs hotter and the fans spin faster and louder to compensate. The good news: cleaning it is simple, takes about 15 minutes and needs no special skills. You just need to avoid a few mistakes that can damage the cooling fans.

Does your card need cleaning?

These signs point to dust, and to how far you need to go:

What you notice	What it usually means	Where to look
The cooling fans are louder than they used to be, even in the same games.	Dust in the heatsink	Steps 1 to 3
You can see gray fluff between the fins or on the fan blades.	Time for a clean	Step 3 and step 4
The temperatures have crept up over months.	Dust, sometimes dried thermal pasteThermal paste: A thin gray paste between a chip and its cooler that helps heat pass from one to the other. More in our Cooling & noise glossary →Close ✕	Step 3, then check temperatures
The card gets dusty again within weeks.	Missing or dirty case filters	Step 5
You hear grinding, rattling or clicking.	A fan bearing or a cable, not dust	Rattling or grinding GPU fan
The card is still hot after a good clean.	Thermal paste or a faulty cooler	Causes 5 and 6

What you’ll need

• Compressed air (a can from any electronics shop) or a small electric air duster.
• A soft brush, such as a clean paintbrush or makeup brush.
• A toothpick or plastic tool to hold the fans still.
• A flashlight, to see into the fins.
• Optional: a microfiber cloth and a little isopropyl alcohol (90% or stronger) for sticky blades.

Avoid a household vacuum cleaner on the card itself. Its nozzle can build up static electricity and knock small parts, and it can spin the fans far too fast.

1. Switch off and unplug everything

Shut down Windows, switch the power supplyPSU (power supply): The power supply: the box that takes power from the wall and feeds every part through cables. More in our PC basics glossary →Close ✕ off with the switch on its back, and unplug the power cable. Wait a minute, then press the PC’s power button once to drain any leftover charge.

Before touching anything inside, touch a bare metal part of the case. That discharges static electricity from your body.

2. Decide whether to take the card out

• Light clean (most people): leave the card in place and work through the open side panel. It’s quicker and avoids unplugging anything.
• Deep clean: if there’s a lot of dust or you can’t reach the fins, take the card out. Unplug its power cables, undo the screws holding its bracket to the PC case, press the small latch at the end of the slotPCIe slot: The long slot on the motherboard where the graphics card plugs in. It has a small latch that clicks. More in our Graphics cards & display glossary →Close ✕, and lift it out evenly.

Taking the card out to clean it doesn’t void the warranty. Removing its cover or cooler might, so this guide doesn’t need you to.

3. Hold the fans and blow out the heatsink

This is the step that matters most.

1. Hold a fan still with a finger or a toothpick against a blade. Compressed air can spin a fan much faster than it was designed for, which can damage its bearing and leave it rattling.
2. Spray in short bursts, with the can upright. Tilting it can spit out freezing liquid.
3. Aim through the fins from several directions: through the cooling fan, from the top edge and from the end of the card. On many cards, blowing from the back of the card towards the front pushes the most dust out.
4. Repeat for each fan, until no more dust comes out.

Use the flashlight to check the fins. You should be able to see light through them.

4. Wipe the fan blades

Dust modules to the leading edge of each blade. A soft brush removes most of it. For sticky dust, wipe each blade with a microfiber cloth slightly dampened with isopropyl alcohol, never dripping wet, while holding the fan still. Don’t bend the fan blades: a bent blade can touch the frame and click.

5. Clean the case filters and other fans

The graphics card breathes the air coming in through the case, so dirty filters mean dust comes straight back. Most cases have a removable filter at the front, and often at the bottom under the power supply and on top.

• Slide or unclip the filters, brush them or rinse them with water.
• Let them dry completely before putting them back.
• Blow out the case fans and the processor cooler too, holding their cooling fans still as well.

6. Put it back and test

1. If you took the card out, push it firmly back into the top long slot until the latch clicks, and screw the bracket in.
2. Reconnect every power cable the card had. A missing one can leave the card with spinning fans and no picture; see GPU fans spinning but no display.
3. Start the PC and play for 15–20 minutes while watching the temperatures. Our guide on how hot a GPU should run shows how to read them.

How often should you clean it?

Every 6–12 months for most homes. Every 3–6 months if you have pets, carpet, or the PC sits on the floor. If the cooling fans start sounding louder in games you play often, that’s your reminder.

Real cases: what other users ran into

These are real reports from PC forums, summarized in our own words, with a link to each original thread.

Real caseGigabyte RTX 2070 SuperSolution not confirmed by the userCleaning helped, but only for a few monthsRead what happened

The card became very loud in some games and showed about 81°C. The owner said that blowing the dust out of the fans with compressed air helped, but only for about four months at a time. Replies suggested cleaning first, then new thermal paste, and lowering the card’s power limit to cut heat and noise, a gentler cousin of undervoltingUndervolting: Running a chip at slightly lower voltage so it makes less heat and noise, often with no loss of speed. More in our Cooling & noise glossary →Close ✕. The thread doesn’t say which the owner did in the end.

Takeaway: if dust comes back quickly, clean the case filters too. If the card is still hot right after a clean, look at the thermal paste. See step 5.

Source: TechPowerUp Forums

Real caseASRock Phantom Gaming RX 6800 XTSolved by replacing hardwareA grinding fan that cleaning couldn't fixRead what happened

The card made a grinding, rattling noise whenever its cooling fans went above about 60% speed. Forum members said the sound pointed to a failing fan bearing and recommended a warranty return (an RMARMA (warranty return): Sending a faulty part back to the shop or maker under warranty to be repaired or replaced. More in our PC basics glossary →Close ✕). The owner returned the card and bought a Sapphire Pulse RX 6800 XT, which didn’t grind or rattle.

Takeaway: dust makes a fan louder, but not rougher. Grinding or rattling is mechanical. See the guide to a rattling or grinding GPU fan.

Source: TechPowerUp Forums

Real caseRTX 2060 Super in an HP prebuiltSolvedClean card, still hot: the case was the problemRead what happened

The card reached 83–84°C in a small prebuilt case with one intake and three exhaust fans. Undervolting gained only 1–2°C, and swapping its fan made no difference. What helped was lowering the card’s power draw and, later, moving to a new motherboard and processor cooler, after which games ran at 70–75°C. The owner said they were very happy with the temperatures.

Takeaway: if a clean card still runs hot, look at the case airflow and how hard the card is working. See how hot a GPU should run.

Source: Tom's Hardware Forum

Frequently asked questions

Is compressed air safe for a graphics card?

Yes, as long as you hold the fans still, spray in short bursts and keep the can upright. Letting the air spin the fans is the main way people damage them.

Can I use a vacuum cleaner to clean my GPU?

Not on the card itself. Household vacuums can build up static and spin the fans too fast. It’s fine for vacuuming dust off the case filters once they’re out of the PC.

Do I need to take the graphics card out to clean it?

No. A light clean through the open side panel is enough for most cards. Take it out only if there’s a lot of dust or you can’t reach the fins.

Will cleaning my GPU void the warranty?

Cleaning the outside and taking the card out of the PC doesn’t. Removing the fan cover or the cooler can, so check with the maker before opening the card itself.

How do I know if my GPU needs cleaning?

Visible fluff between the fins, fans that are louder than they used to be, or temperatures creeping up over the months are the usual signs.