Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Pomoc pśepytaś

Glědajśo se wobšudy pomocy. Njenapominajomy was nigda, telefonowy numer zawołaś, SMS pósłaś abo wósobinske informacije pśeraźiś. Pšosym dajśo suspektnu aktiwitu z pomocu nastajenja „Znjewužywanje k wěsći daś“ k wěsći.

Learn More

FF is using only 4 of the 8 cores in my CPU. Why isn't it using all 8?

  • 5 wótegrona
  • 3 maju toś ten problem
  • 4 naglědy
  • Slědne wótegrono wót Burgomatic

more options

Task Manager shows that even when opening 15 pages in tabs, FF is still only using 4 out of the 8 cores in the CPU. Is FF made to utilize only 4-core CPUs?

Task Manager shows that even when opening 15 pages in tabs, FF is still only using 4 out of the 8 cores in the CPU. Is FF made to utilize only 4-core CPUs?

Wšykne wótegrona (5)

more options

Firefox does not need to use 8 cores. 4 cores is plenty for it. Even games don't need 8 cores. Max, games would need is 4 cores.

Wót Microrobot změnjony

more options

Firefox is 32 bit if you want to use all 8 cores you can use a 64 bit variant of firefox such as

NOTE: Both of these versions of firefox are unstable and may combust.

Wót kobe změnjony

more options

Maybe because Firefox is a 32-bit application on a 64-bit operating system? Just a WAG.

more options

There is no need for Firefox to be using all your cores, that would just be a waste of resources and energy.

more options

I agree that there's no need to use all cores, but I thought modern apps were made to use all available power. I didn't know that this was caused by FF being a 32-bit app.

Thank you all for your answers.