When I google and look at the speces then it says that the E7450 has an i5 CPU. But on my E7450 it says Intel i7. How can I know what I got? I bought it used but it is rather new computer. I suppose I can get the program CPU-Z to see what I got.
When I was buying my super special E7450 at my last place of employment, i7 was required to get nVIDIA graphics (840m, if I recall). It's definitely an option.
I miss that laptop :\
DXDIAG will also report the CPU model, built-in to Windows. More info is always available at http://ark.intel.com/