The basic configuration would be as follows:

* iMac with Intel Core i5 processor (I5-2400S) @ 2.5Ghz (1x processor; 4x cores)
* Built-in 21.5" LED-backlit glossy widescreen TFT LCD display with IPS (up to 1920 x 1080 resolution)
* 4Gb RAM DDR3 PC3-10600 (1333Mhz) SDRAM SO-DIMM
* 500Gb Serial-ATA hard drive; 7200rpm
* Slot-loading 8x Dual-Layer SuperDrive optical drive -- reads/writes/rewrites CDs and DVDs
* AMD Radeon HD 6750 with 512MB GDDR5 SDRAM
* Built-in iSight camera
* Built-in stereo speakers, built-in microphone, headphone/optical digital audio output, audio line in
* Built-in 10/100/1000BASE-T (Gigabit) Ethernet
* Built-in AirPort Extreme wireless 802.11a/b/g/n
* Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate) module
* 1x Secure Digital slot (SDXC)
* 1x Thunderbolt digital video output (support for up to two Thunderbolt displays)
* 1x FireWire 800 port (up to 800 Mbps)
* 4x USB 2.0 ports (up to 480 Mbps)
* Apple model: A1311 (EMC 2428), MC309 (iMac12,1)
* Apple description: iMac (21.5-inch, Mid 2011) [codename "Sandy Bridge"]
* Introduced: May 2011
* Discontinued: October 2012
** The below figures may vary and change according to the Geekbench website:
-- Geekbench 2 (64 bit): 7970
-- Geekbench 3 (32 bit): 6698
-- Geekbench 3 (64 bit): 7237