Are the new 15 i5's a quad or duo? I went to the Apple store and they told me that it was all quad but i want to make sure. Thanks alot.

The i7 is dual core.

The i7 is dual core.

Wow... so none are 4 cores?

the machines will present 4 virtual cores to applications that are able to take advantage of that, but there are two physical cores

Wouldn't one of the barriers to using quad cores and up would be the significant decrease in battery life? Its a laptop, does it really need 4 cores?

I guess some people require mobility but not battery life. I have a quad-core Lenovo W700 laptop at work. I work out of a few different building and labs, so I can always have it with me, but there is always AC power where I work. Battery lide is about 90 minutes, but I don't really care.

the i7 is dual core with hyperthreading. It can do 2 threads per core.

I guess some people require mobility but not battery life. I have a quad-core Lenovo W700 laptop at work. I work out of a few different building and labs, so I can always have it with me, but there is always AC power where I work. Battery lide is about 90 minutes, but I don't really care.

There's a few out there that need mobility and top notch performance, sure, but Apple would take a lot of heat for releasing a clunky thick MacBook Pro with crappy battery life. Remember, four cores doesn't mean twice as fast as two cores. It's only a small reduction in performance to get lighter and smaller case, and better battery life.