Techradar posted a review on the new Apple Mac mini 2011

The Apple Mac mini has come a long way since it was first introduced in 2005. The 2011 Mac mini refresh represents a radical change for Apple's small form factor computer. The ageing Core 2 Duo is gone, replaced by second-generation Sandy Bridge Core i5 processors. This is a substantial improvement in processing power for the Mac mini, which was forced to skip the first-generation Core iX chips because its onboard graphics weren't up to scratch, there was no room for a discrete graphics chip and a legal dispute prevented an integrated Nvidia chipset being used.

  Review: New Apple Mac mini 2011