Quick Answer
For a clear-headed buying decision: Repasting a GPU after a year is rarely needed; modern factory paste lasts 3 to 5 years. Do it only if temperatures have climbed 10 to 15C above launch or you see thermal throttling, then a quality paste swap can drop temps by 8 to 12C, cheap insurance against straining a card worth R12,000 or more.
When a GPU repaste actually helps
Factory thermal paste on a modern GPU holds up for years, so a one-year repaste is usually unnecessary. The signs that justify it are clear: core temperatures 10 to 15C higher than when the card was new, fans ramping louder, or throttling that caps your clocks. If your GPU still sits in the mid-60s to low-70s under load, leave it alone. A repaste also voids some warranties, so check yours first.
Signs a repaste is worth it
Repaste if load temperatures have risen 10 to 15C over time, the card throttles below its rated boost, or you have it open for cleaning anyway. A quality paste can cut temps by 8 to 12C and quieten the fans. Dust the heatsink at the same time for the biggest gain.
When to leave it alone
If your GPU runs in the mid-60s to low-70s Celsius under sustained load, the paste is fine and opening the card risks damage and warranty loss. Cleaning dust from the fans and fins often fixes rising temps without any repaste at all.
FAQ
Will repasting void my warranty?
It can, since opening the cooler often breaks a warranty seal. Check your card's warranty terms before you start, and consider waiting until the cover lapses.
How much can a repaste lower temperatures?
A quality paste swap on a dusty or aged card can drop load temps by 8 to 12C. On a healthy card the gain is minimal, so check temps first.
Does a GPU need repasting after one year?
Almost never. Factory paste lasts 3 to 5 years, so a one-year repaste is unnecessary unless temperatures have clearly climbed or the card is throttling.
Cooling Tip
Check load temps before repasting; if your GPU sits in the mid-60s to low-70s C, just dust the heatsink rather than risk opening the card.