HP is touting the improved performance and more efficient power management capabilities of 11 new servers that incorporate Intel's highly anticipated Nehalem architecture.

Each server in the new line up uses fewer than half as many watts as its predecessor, says Paul Gottsegen, vice president of marketing for HP's industry standard server group.

Among the biggest problems data centres face today is the provisioning of power to servers, Gottsegen says. Servers use so much energy that IT pros can't get enough power to them, and even if they could, they don't have enough cooling to keep them at a safe temperature, he says.

"Every time I go to a data centre, it's the strangest thing," Gottsegen says. "There are big, beautiful data centres, and every rack is only half-filled."

Intel's newly released Xeon processors, which were code-named Nehalem, offer numerous improvements related to efficiency of power use, the company said.

HP, which is introducing the new Proliant G6 line based upon the next-generation processors, claims it can wring out even more power savings by combining the new chips with a series of 32 sensors which automatically track thermal activity throughout the server and adjust cooling and processing needs as necessary. The granularity of this feature allows each fan within the server to be managed independently.

"The sensors dynamically adjust system components such as fans, memory and input/output processing to optimise system cooling and increase efficiency," HP said in a press release.

Another HP technology called Dynamic Power Capping sets limits on the power drawn by servers. Today, many IT pros provision too much power to individual servers because they think they need more than is actually required, according to Gottsegen. By delivering each server the power it needs and nothing more, IT pros will be able to place larger numbers of servers in their data centres without increasing total power use, HP says.

Dynamic Power Capping was introduced a few months ago and is being included in all 11 servers in the new line. Previously, just a few HP servers contained the technology.

The 11 servers include tower, rack and blade systems, and represent the largest launch of ProLiant servers since the product line was created, according to HP.

The servers are all either available now or will be within the next few weeks. Starting prices range from $1,000 (£750) to $2,105 and vary based on configurations.

Flash-based solid state disk is an option for several of the servers, but will be most useful in a blade system designed for virtualisation, Gottsegen says. "That's the one where the premium you pay [for flash] makes the most sense," he says.