2005 June–July: The SP 1.8 model was discontinued in the United States and Europe.Newly introduced features were the 16x dual-layer SuperDrives across the line and increased storage, up to 800 GB for the higher-end models. 2005 April: CPU speed increased: DP 2.5 GHz → DP 2.7 GHz (PCI-X, LC), DP 2.0 GHz → DP 2.3 GHz (PCI-X), DP 1.8 GHz → DP 2 GHz (PCI).Apple's official name for this machine is 'Power Mac G5 (Late 2004)'. 2004 October: A new SP 1.8 reintroduced, with a slower, 600 MHz FSB (front-side bus), PCI bus, based upon the iMac G5's architecture (U3lite and Shasta chips).The 2.5 GHz model is notable as the first major PC with liquid cooling included as stock. 2004 June: 90 nm DP 1.8, DP 2.0 and DP 2.5 GHz replace all previous models.2003 November: DP 1.8 replaces SP 1.8 GHz price reduction on SP 1.6 GHz.2003 June: Initial release at speeds of SP 1.6, SP 1.8, DP 2.0 GHz.Optional AirPort Extreme 802.11b/g (internal antenna) with Bluetooth 2.0+EDR card Optional AirPort Extreme 802.11b/g (external antenna)ĥ6k V.92 modem (Optional on Late 2004 model) NVIDIA GeForce 6800 Ultra DDL, ATI Radeon 9600, Radeon 9650, or Radeon X850 XT with 128 or 256 MB of DDR RAM NVIDIA GeForceFX 5200 Ultra, GeForce 6800 GT DDL, GeForce 6800 Ultra DDL, ATI Radeon 9600 XT, or Radeon 9800 XT with 64, 128, or 256 MB of DDR RAM NVIDIA GeForceFX 5200 Ultra, GeForce 6800 Ultra DDL, ATI Radeon 9600 Pro, or Radeon 9800 Pro with 64, 128, or 256 MB of DDR RAM DP designates a dual-processor machine, SP designates a single-processor machine, and DC designates a dual-core-processor machine.

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