HP says it has made gains in energy efficiency and performance with new ProLiant G6 servers, of which seven are built on six-core AMD Opteron processors. South Pacific enterprise server product manager Andrew Cameron says the servers have been built from the ground up for energy savings. He says customers can cut energy bills by 50 percent by replacing servers bought prior to 2006. The range includes the ProLiant DL785, DL585, DL385 and DL165 rack-optimised servers, and the ProLiant BL465, BL495c and BL685c server blades. In addition, the vendor has released a new platform it says offers double the density of traditional rack servers, along with a modular, scalable tower server design to enable customers to buy capacity as needed and defer capital expenditure to later stages of business growth. HP says the ProLiant DL1000 Multi-node series increases energy efficiency by 30 percent increase over traditional rack servers. The series includes the DL4x170h G6, offering four server nodes in a single two-unit chassis, and the HP ProLiant DL2x170h G6, which provides two server nodes. The modular server tower (HP's ProLiant ML330 G6) is based on Intel Xeon 5500 processors and DDR3 memory. ML330 G6 server is available now with a starting price of $2,835, while the G6 platforms on AMD processors are expected in July, ranging in price from $3180 to $62,350. The ProLiant DL4x170h and ProLiant DL2x170h are planned to reach New Zealand in August.