For the moment, you cannot get "identical" configurations.
All iMacs have quad core processors. With the exception
of the Mac Mini Server, all Minis have dual core processors.
And while the Server will out perform the i5 iMacs it is left
in the dust by the i7 iMacs.
All iMacs have discrete graphics cards, all which are superior to
the only Mini with discrete graphics chip. The base model and
the server version have Intels HD3000 integrated graphics.
See this page to see comparative benchmarks of the different systems:
With that said, as to selecting a Mini for gaming, you will want the
version with the Radeon 6630M. You may also want to select
the special order 2.7 GHz i7 option. Always good to have more
horsepower under the hood.
Also, the day you order, place an order with OWC or Newegg and get
an 8 gig RAM upgrade. You will be glad you did. (getting it from
Apple is way to expensive).
Phil Femano wrote:
Apple's web site no longer indicates availability of an i7 iMac? Did they discontinue that, and if so, does anyone know why???
The i7 iMac is a special build to order option
direct from Apple. Look under Processor options.
There is a 2.8 GHz qud core i7 for the 21.5" and there
is a 3.4 GHz i7 for the 27" iMac. The options are only
available with the models with the better graphics chip.