How many cores does blender support?

I have a question about the video cards. Does windows recognize the apple video cards, thus making them dual use, while the windows only cards are… Windows only.?

so blender can work whit a dual core machine whit out adding or changing anything (is all there by defoult) or do i have to go inside blender guts to change some kind of code so it will work whit a dual core machine??? and what is threads because im still not sure what is the use of that.

It’ll work on a dual core machine, of course! If you want optimal rendering speed, you do want to up the threads to 2.

I have an intel dualcore (dont know the clock speed right now) but is quite new and i experience a significant speed increase when i turn the threads from 2 to 8. Im not sure why this happens but it happens.

Well, if one thread is rendering, and another is waiting for information from the cache/RAM yet another thread could be rendering at the same time. This does not always work, it only works in very complex scenes.

Ayoo 8 cores is not a lot now LOL but it was a lot for then.