This is a pretty cool tool. At least it gives an idea of what chip is old, which may account for a "bargain" from Dell, HP, etc.
Core i7 looks good. I had never heard of it before this. I did not know that quad had come and gone, following duo. One day you don't read the papers ...
I compared 17" laptops. Same processor and otherwise comparable:
Sony Viao $1,100
Apple starts at $2,500.
Yet another reason I hate Apple.