It's the confluence of the two hip tech trends: "green" IT and cloud computing.
IBM on Wednesday detailed its iDataPlex servers aimed at Internet companies that need compute power on-demand but also want to keep a lid on electricity costs.
They pack more than double the number of servers in a typical rack while using 40 percent less electricity.
The systems allow people to create a pool of computing resources, rather than have specific servers tied to applications--the typical way of configuring servers that keeps most server capacity unused.
IBM said the iDataPlex is aimed at Web companies that need rapid scalability to serve consumer applications, such as search and online gaming.
Vendors are in a race to provide the on-ramp to cloud computing for start-ups and established Web companies. In addition to scalability, they need ways to cap rising energy and real-estate costs.
"iDataPlex will help to fuel this growth by erasing some of the inhibitors holding Web 2.0 back--namely the amount of space and energy required to serve content to more and more end users," Ann Winblad, co-founder and a managing director of Hummer Winblad Venture Partners, said in a statement.