Sid70

I am looking to get one, specs are:

2.5GHz Mac mini
2.5GHz dual-core Intel Core i5
4GB memory
500GB hard drive1
Intel HD Graphics 4000
OS X Mountain Lion

Will add up memory up to 8GBs.

How different Core i5 is from Core i7 ?
The machine is considered to work with Photoshop mostly,
related question is how good is that Intel HD Graphics 4000 video card?

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