Available today, Apple has announced updated iMac hardware. They feature faster processors (with 3.06 GHz as a build-to-order option) and faster internal system buses as well as an improved graphics chip for the high-end model.

The new 20-inch 2.4 GHz iMac, for a suggested retail price of $1,199 (US), includes:

• 20-inch widescreen LCD display;
• 2.4 GHz Intel Core 2 Duo processor with a 1066 MHz front-side bus;
• 1GB of 800 MHz DDR2 SDRAM expandable to 4GB;
• 250GB Serial ATA hard drive running at 7200 rpm;
• a slot-load 8x SuperDrive® with double-layer support (DVD±R DL/DVD±RW/CD-RW);
• ATI Radeon HD 2400 XT with 128MB GDDR3 memory;
• built-in iSight video camera;
• built-in AirPort Extreme 802.11n wireless networking & Bluetooth 2.1+EDR;
• mini-DVI out (adapters for DVI, VGA and Composite/S-Video sold separately);
• built-in stereo speakers and microphone; and
• the Apple Keyboard, Mighty Mouse and infrared Apple Remote.

The new 20-inch 2.66 GHz iMac, for a suggested retail price of $1,499 (US), includes:

• 20-inch widescreen LCD display;
• 2.66 GHz Intel Core 2 Duo processor with a 1066 MHz front-side bus;
• 2GB of 800 MHz DDR2 SDRAM expandable to 4GB;
• 320GB Serial ATA hard drive running at 7200 rpm;
• a slot-load 8x SuperDrive with double-layer support (DVD±R DL/DVD±RW/CD-RW);
• ATI Radeon HD 2600 PRO with 256MB GDDR3 memory;
• built-in iSight video camera;
• built-in AirPort Extreme 802.11n wireless networking & Bluetooth 2.1+EDR;
• mini-DVI out (adapters for DVI, VGA and Composite/S-Video sold separately);
• built-in stereo speakers and microphone; and
• the Apple Keyboard, Mighty Mouse and infrared Apple Remote.

The new 24-inch 2.8 GHz iMac, for a suggested retail price of $1,799 (US), includes:

• 24-inch widescreen LCD display;
• 2.8 GHz Intel Core 2 Duo processor with a 1066 MHz front-side bus;
• 2GB of 800 MHz DDR2 SDRAM expandable to 4GB;
• 320GB Serial ATA hard drive running at 7200 rpm;
• a slot-load 8x SuperDrive with double-layer support (DVD±R DL/DVD±RW/CD-RW);
• ATI Radeon HD 2600 PRO with 256MB GDDR3 memory;
• built-in iSight video camera;
• built-in AirPort Extreme 802.11n wireless networking & Bluetooth 2.1+EDR;
• mini-DVI out (adapters for DVI, VGA and Composite/S-Video sold separately);
• built-in stereo speakers and microphone; and
• the Apple Keyboard, Mighty Mouse and infrared Apple Remote.

Available immediately.