Low-power servers running on Calxeda's 64-bit ARM chip will be available a year from now, Calxeda said.
IBM has licensed smartphone and tablet processor designs from ARM, which will be used in new communications and networking gear.
A new ARM architecture for embedded chips could boost the power and precision of systems used in a variety of products, including car brakes, medical devices, and factory systems.
Look for a road map for Intel's shift to the mobile era to be outlined at next week's Intel Developer Forum.
Imagination is the U.K. company that designs the iPhone's and iPad's graphics chips.
Intel is expected to announce availability next week of a low-power Atom server chip code-named Avoton, which is likely to appear soon in systems such as Hewlett-Packard's Moonshot.
ARM has acquired Sensinode in Finland in its bid to provide technology and processors for the "Internet of things," consisting of a variety of low-power and inexpensive devices including sensors communicating with the Internet and one another.
Oracle and ARM are working together to make the Java programming language more suitable for ARM processors, in order to encourage its use for embedded systems and enterprise software.
Does Intel's "Clover Trail" Atom chip outperform the incumbent ARM processor? One analyst has rerun the benchmarks, and concluded that ARM's processor comes out on top.
AMD's "Seattle" chip, the first from the chipmaker to be built around an ARM cores, will sample early in 2014.