iMac 24” early 2009 Core 2 Duo 2.6Ghz

24-Inch Aluminum (Early 2009) features a 2.66 GHz Intel “Core 2 Duo” processor
two independent processor “cores” on a single silicon chip
6 MB shared level 2 cache 1066 MHz system bus 4 GB of RAM (1066 MHz DDR3 SDRAM) 640 GB (7200 RPM) hard drive