The iMac is a series of Macintosh desktop computers offered by Apple Inc.The current Apple iMac features either an Intel Core 2 Duo, Intel Core i5,or Intel Core i7 processor, nVidia GeForce 9400M integrated graphics or an ATI Radeon HD 4670 with options to upgrade to the ATI Radeon HD 4850 (27" model only),and a choice of glossy 21.5" or a 27" LCD screens.While previous iMac models had a white polycarbonate enclosure as the iMac G5,the current-generation iMac has an enclosure shaped like Apple's Cinema Displays and styling reminiscent of the iPhone. Furthermore, the iMac is now made using the same unibody assembly as the MacBook Pro. Previous aluminum iMac models had a black plastic back, but the current model has an aluminum back continuous with the front aluminum plate.
History:
At the Macworld Conference and Expo on January 10, 2006, Steve Jobs announced that the new iMac would be the first Macintosh to use an Intel CPU, the Core Duo. The introduction of the new iMac along with the Intel-based MacBook Pro signaled the start of a six month transition from PowerPC to Intel processors. The features, price, and case design remained unchanged from the iMac G5. The processor speed, however, according to tests run by Apple using SPEC,[1] was declared to be two to three times faster than the iMac G.
iMac (21.5 and 27-inch, Late 2009) - Technical Specifications
Size and weight
21.5-inch iMac
Height:
17.75 inches (45.1 cm)
Width:
20.8 inches (52.8 cm)
Depth:
7.42 inches (18.85 cm)
Weight:
20.5 pounds (9.3 kg)
27-inch iMac
Height:
20.4 inches (51.7 cm)
Width:
25.6 inches (65.0 cm)
Depth:
8.15 inches (20.7 cm)
Weight:
30.5 pounds (13.8 kg)
Connections and expansion:
One FireWire 800 port; 7 watts
Four USB 2.0 ports
SD card slot
Communications:
Built-in AirPort Extreme 802.11n Wi-Fi wireless networking;2 IEEE 802.11a/b/g compatible
Built-in Bluetooth 2.1 + EDR (Enhanced Data Rate)
Built-in 10/100/1000BASE-T Gigabit Ethernet (RJ-45 connector)
Audio:
Built-in stereo speakers
Two internal 17-watt high-efficiency amplifiers
Headphone/optical digital audio output (minijack)
Audio line in/optical digital audio input (minijack)
Built-in microphone
Support for Apple Stereo Headset with microphone
Environmental Status Report:
iMac is designed with the following features to reduce its environmental impact:
Arsenic-free display glass
BFR-free
PVC-free5
Highly recyclable aluminum and glass enclosures
Meets ENERGY STAR 5.0 requirements
Rated EPEAT Gold
Display:
Built-in 21.5-inch (viewable) or 27-inch (viewable) LED-backlit glossy widescreen TFT active-matrix liquid crystal display with IPS technology
Resolution
21.5-inch models: 1920 by 1080 pixels
27-inch models: 2560 by 1440 pixels
16:9 aspect ratio
Millions of colors at all resolutions
Typical viewing angle: 178° horizontal; 178° vertical
Typical brightness: 320 cd/m2 (21.5-inch models); 375 cd/m2 (27-inch models)
27-inch model can be attached to a wall mount, articulating arm, or other VESA-compliant mounting solution using the optional VESA Mount Adapter Kit
Graphics and video support:
21.5-inch models, one of the following:
NVIDIA GeForce 9400M graphics processor with 256MB of DDR3 SDRAM shared with main memory3
ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory
27-inch model with dual-core processor, one of the following:
ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory
ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory
27-inch model with quad-core processor:
ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory
Built-in iSight camera
Mini DisplayPort output port with support for DVI, VGA, and dual-link DVI (adapters sold separately). 27-inch models also support input from external DisplayPort sources (adapters sold separately).
Support for extended desktop and video mirroring modes
Simultaneously supports full native resolution on the built-in display and up to a 30-inch display (2560 by 1600 pixels) on an external display
Software:
Mac OS X v10.6 Snow Leopard (includes iTunes, Time Machine, Quick Look, Spaces, Spotlight, Dashboard, Mail, iChat, Safari, Address Book, QuickTime, iCal, DVD Player, Photo Booth, Front Row, Xcode Developer Tools)
iLife ’09 (includes iPhoto, iMovie, iDVD, iWeb, GarageBand)
Processor and memory:
21.5-inch and 27-inch models, one of the following:
3.06GHz Intel Core 2 Duo processor with 3MB shared L2 cache
3.33GHz Intel Core 2 Duo processor with 6MB shared L2 cache
27-inch models only, one of the following:
2.66GHz quad-core Intel Core i5 processor with 8MB shared L3 cache; Turbo Boost dynamic performance up to 3.2GHz
2.8GHz quad-core Intel Core i7 processor with 8MB shared L3 cache; Turbo Boost dynamic performance up to 3.46GHz; Hyper-Threading for up to eight virtual cores
4GB (two 2GB SO-DIMMs) of 1066MHz DDR3 SDRAM; four SO-DIMM slots support up to 16GB
Storage:
21.5-inch models:
500GB or 1TB 7200-rpm Serial ATA hard drive
Optional 2TB 7200-rpm Serial ATA hard drive
27-inch models:
1TB 7200-rpm Serial ATA hard drive
Optional 2TB 7200-rpm Serial ATA hard drive
Optical drive:
Slot-loading 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW)
Writes DVD+R DL and DVD-R DL discs at up to 4x speed
Writes DVD-R and DVD+R discs at up to 8x speed
Writes DVD-RW discs at up to 6x speed and DVD+RW discs at up to 8x speed
Reads DVDs at up to 8x speed
Writes CD-R discs at up to 24x speed
Writes CD-RW discs at up to 16x speed
Reads CDs at up to 24x speed
Electrical and operating requirements:
Line voltage: 100-240V AC
Frequency: 50Hz to 60Hz, single phase
Maximum continuous power: 241W (21.5-inch models); 365W (27-inch models)
Operating temperature: 50° to 95° F (10° to 35° C)
Storage temperature: -4° to 116° F (-20° to 47° C)
Relative humidity: 5% to 95% noncondensing
Maximum altitude: 10,000 feet
Typical acoustical performance
Sound pressure level (operator position): 18 dBA at idle
Other Specifications:
Weight varies by configuration and manufacturing process.
Wireless Internet access requires a wireless access point and Internet access; fees may apply.
Memory available to Mac OS X may vary depending on graphics needs. Minimum graphics memory usage is 256MB.
1GB = 1 billion bytes and 1TB = 1 trillion bytes; actual formatted capacity less.
PVC-free external cables in North America only.
Acoustics measured on standard 21.5-inch and 27-inch iMac systems with 3.06GHz Intel Core 2 Duo processors. Acoustics may vary by configuration.
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