Since UMPCs are smaller and lighter than regular notebook PCs, the demands on the cooling system is higher than notebooks with most UMPCs currently using a variety of miniature fans/coolers. Sunonwealth is currently discussing deals with UMPC makers to provide cooling solutions and hopes to ship products by the second quarter of this year, noted the sources.
Sunonwealth to make UMPC coolers

Taiwanese cooling maker Sunonwealth is in talks with Ultra Mobile PC makers to produce cooling modules for these tiny computers: