Originally Posted by fatfred
2 cores? According to Intel's price list:
i7-920 (8M L3 cache, 4 cores
, 8 Threads, 2.66 GHz, 4.80 GT/sec Intel QPI 45nm)
Not a big expert on hardware, so please explain to me if I got this all wrong :]
Edit: ok that was the 920 (desktop), not 620M (mobile) model... my bad... I see it now.. 2 cores.. meh.. Maybe someone can explain to me why this CPU is good? I thought all i7 was quad cores :o
The number of cores has nothing to do with the Core-ix
Furthermore, the number of cores is not an indictor of the how good the processor is. The architecture should be the first thing you look at. If you're getting a notebook and plan to use on battery power and/or on your lap you need to look for an efficient design.
The first mobile QUAD Core-i7s to hit the market came out in 2009. These were the Clarksfield microprocessors using a 45 nanometer design and run at a 45W or 55W TDP. They are too hot for any Mac notebook. Notebooks that use these processors have to be considerably thicker to deal with the power and ventilations needs. The exception to this is the 15" HP Envy, but it removed the optical drive to make space for this. Even after all that extra room was had the battery life was still pretty poor and the performance comparisons show very little gain for it.
The Arrandale Core-i7s are the first of the Core-i7s that are great for mass consumption in notebooks. They are built using a 32 nanometer design and are 18W, 25W and 35W. The next MacBook Air should be using an 18W Core-i7.
Also, as the link below shows the Arrandale Core-i7s are the first to include the IGP into the processor, thus removing the need for a Northbridge, bringing it from a 3 chip design to a 2 chip design. This improves power usage, speed and size.
I know it's Wikipedia, but it's usually a great place to start. From there you can find pretty much everything else you need to know.