Going from dual core to quad core - Much of a performance increase?

[Feek]

As you can see from my signature, I'm running an overclocked E6600 CPU on a Gigabyte 965P-DS3.

 

This board supports quad core bugs so I'm thinking about swapping the E6600 for a Q6600 which I will try and overclock to the same level.

 

Now I know that Leopard is fully multicore aware but is it aware enough for me to notice a performance jag from upgrading chips?

 

I'd be interested to know if anyone has done this and noticed any improvement or just general thoughts.

 

Thanks

[Deomitrus]

I started a thread about this, take a look: http://forum.insanelymac.com/index.php?showtopic=100969

 

Basically I believe performance should increase, especially when encoding and rendering things. I didn't get a lot of technical information, but everyone said quad was better. So, yeah...