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Apple debuts quad-core iMacs

| Thursday, May 5, 2011

Apple Inc. released an upgraded line of iMac desktop computers with faster processors, higher-resolution cameras and a new type of data port.

The new iMacs all have Intel quad-core processors, which had been available as an upgrade to the standard dual-core processors of the previous generation. Apple said the new models are up to 70 percent faster. The new 21.5-inch iMac has a single Thunderbolt port, which can carry data at speeds 20 times faster than most current USB ports. It can also connect to additional monitors.

The 27-inch iMac has two Thunderbolt ports. Apple introduced Thunderbolt on MacBook Pro laptops in February. The port was developed by Intel Corp. The 21-inch iMac starts at $1,199, the larger model at $1,699. Apple last revamped its iMacs in October 2009.

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