1GB (1x1GB) 667MHz DDR2 SDRAM (PC2-5300), supports up to 4 GB
Standard graphics
ATI Radeon HD 2400 XT with 128MB of GDDR3 memory
Hard drive
250GB Serial ATA(2); 7200 rpm
Optical drive
Slot-loading 8x SuperDrive with 2.4x Dual Layer burn (DVD+R DL/DVD±RW/CD-RW)
Expansion
na
Video camera
Built-in iSight; Mini-DVI output port with support for DVI, VGA, S-video, and composite video connections via adapter
Display
20-inch (viewable) widescreen TFT active-matrix LCD, 1680x1050 pixels, millions of colors
Wireless
Built-in AirPort Extreme (802.11n); built-in Bluetooth 2.0+EDR (Enhanced Data Rate) module.
Color
Aluminum Silver / Glass
Ports and Bays
One FireWire 400 ports; 7 watts each, Three USB 2.0 ports; two USB 2.0 ports (on keyboard),
Audio
Built-in stereo speakers, built-in microphone, optical digital audio output/headphone out, optical digital audio input/audio line in
Networking
Built-in 10/100/1000BASE-T (Gigabit)
Software
Mac OS X v10.4 Tiger (includes Spotlight, Dashboard, Mail, iChat AV, Safari, Address Book, QuickTime, iCal, DVD Player, Xcode Developer Tools), iLife ’08 (includes iTunes, iPhoto, iMovie HD, iDVD, iWeb, GarageBand), Microsoft Office 2004 for Mac Test Drive, iWork (30-day trial), Big Bang Board Games, Comic Life, Omni Outliner, and Apple Hardware Test, Front Row, Photo Booth
Hardware accessories
Apple Remote, Apple Keyboard, and Mighty Mouse, Built-in IR Receiver
Limited warranty and service
Your iMac comes with 90 days of free telephone support and a one-year limited warranty