The new iMacs represent a nice speed bump and consolidation around the Intel Core ix family of processors, with new graphics options to keep the line fresh. The entry-level 21.5-inch iMac is equipped with the Dual Core i3 processor at 3.06 GHz, and can be optionally configured with a 3.2.GHz Dual Core i3 or a 3.6 GHz Dual Core i5.
The baseline 27-inch model has the Dual Core i3, with an optional 3.6 GHz Dual Core i5. The Quad-Core models of the 27-inch iMac are a 2.8 GHz Quad Core i5 and a 2.93 GHz Quad Core i7. All models come with 4 GB of RAM.
Graphics options start with the baseline ATI Radeon HD4670 for the 21.5-inch iMac, with an optional ATI Radeon 5670 for built-to-order models. The 27-inch iMac starts with the ATI Radeon 5670, and can be configured with the ATI Radeon 5750.
The 27-inch model also has an optional 256 GB SSD (Solid State Drive). Even more interesting, the SSD drive can be installed alongside the existing 1 or 2 TB hard drive, giving you two hard drives in the 27-inch iMac.