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| | 21.5" iMac $1,199.99 | 21.5" iMac $1,499.99 | 27" iMac $1,699.99 | 27" iMac $1,999.99 |
| Processor | 3.06GHz Intel Core 2 Duo 1066MHz frontside bus 3MB shared L2 cache | 2.66GHz Intel Quad-Core i5 8MB shared L3 cache |
| Memory | 4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM | 4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM
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| Hard drive | 500GB SATA, 7200rpm | 1TB SATA, 7200 rpm |
| Optical drive | Slot-loading 8x SuperDrive with 4x double-layer burning (DVD±R DL/DVD±RW/CD-RW) |
| Display | 21.5 inch (viewable) LED-backlit glossy 16:9 widescreen TFT active-matrix display; 1920 by 1080 pixels; millions of colors; IPS technology
| 27 inch (viewable) LED-backlit glossy 16:9 widescreen TFT active-matrix display; 2560 by 1440 pixels; millions of colors; IPS technology
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| Video | Built-in iSight camera Mini DisplayPort output with support for DVI, dual-link DVI and VGA video (requires adapters, sold separately) | Built-in iSight camera Mini DisplayPort output with support for DVI, dual-link DVI and VGA video (requires adapters, sold separately); supports input from external DisplayPort sources (requires cables and adapters, sold separately) |
| Graphics | NVIDIA GeForce 9400M with 256MB of shared DDR3 memory
| ATI Radeon HD 4670 with 256MB of GDDR3 memory
| ATI Radeon HD 4850 with 512MB of GDDR3 memory
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| Ports | 4 USB 2.0 1 FireWire 800 1 SD card slot |
| Audio | Built-in stereo speakers with two internal 17-watt high-efficiency amplifiers Built-in microphone Combined optical digital audio output/headphone out Combined optical digital audio input/audio line in |
| Ethernet | Built-in 10/100/1000BASE-T (Gigabit) |
| Wireless | Built-in AirPort Extreme 802.11n Wi-Fi wireless networking Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate) |
| Included accessories | Apple Wireless Keyboard and Magic Mouse |
iMac features a brilliant 21.5-inch or 27-inch LED-backlit display with a widescreen 16:9 aspect ratio—perfect for watching HD video.
