Apple upgrades iMacs with quad-core processors

Apple beefed up its iMac all-in-one desktop computers with powerful new-generation Intel chips
MacWorld attendees look at a display of iMac computers. Apple on Tuesday announced that it beefed up its iMac all-in-one desktop computers with powerful new-generation Intel chips and high definition cameras.

Apple is upgrading its iMac line of 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 were available as an upgrade to the standard dual-core processors of the previous generation. Apple Inc. says the new models are up to 70 percent faster.

The new 21.5-inch iMac has a single port, which can carry data at speeds 20 times higher 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 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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