Apple has upgraded its range of Power Mac G5 workstations. The new line adds a flagship model with two 2.5GHz PowerPC processors, and drops the 1.6GHz model – leaving the entire line as dual-processor configurations. All models feature a new eight-speed DVD-R/CDRW ‘SuperDrive’.

The top-of-the-line model features two 2.5GHz processors, with the new addition of liquid cooling to keep temperatures down. It ships with 512MB 400MHz DDR SDRAM as standard, which is upgradeable to a maximum of 8GB. Also standard is the ATI Radeon 9600XT graphics card, which includes 128MB of RAM and can be swapped out for a 256MB model.

The card connects through an AGP 8x Pro slot, which sits next to three PCI-X slots (one 133MHz and two 100MHz). Other standard features include a 160GB 7,200rpm Serial ATA hard drive and the 8x SuperDrive.

The Power Mac G5 2.5GHz costs £1,870 plus VAT, and will ship in July.

The mid-range model sports two 2.0GHz chips, 512MB of RAM (with an 8GB maximum) and an NVidia GeForce FX 5200 Ultra graphics card with 64MB of RAM. It features the same 160GB SATA hard drive, 8x SuperDrive, AGP 8x Pro slot, and three PCI-X slots as it’s big brother. It’s available now for £1,570 plus VAT.

The new base model features two 1.8GHz processors, 256MB of RAM (with a 4GB maximum) and the NVidia GeForce FX 5200 Ultra graphics card. As standard, it ships with an 80GB SATA hard drive, 8x SuperDrive, AGP 8x Pro slot, and three 64-bit PCI slots. It’s available now for £1,235 plus VAT.

All models ship with Mac OS X 10.3.