Ex Somnio said:
Would you even recommend getting it if it is just a slight upgrade from 2.16 Ghz to 2.33? Iti s only 7.87% faster.
I would not personally recommend it. Depending on what your mum uses it for, I doubt she would notice the small speed bump.
How much RAM does the iMac have in it, as putting in some more RAM could be a better option. If you go down the RAM route it should be laptop RAM that the machine uses.