The site Home Server Hacks have posted a tutorial on how to upgrade the processor in the HP MediaSmart Server EX470/475 from the supplied 1.8GHz Sempron, which is a Socket AM2 to a low power (45W) 2.6GHz processor with 1MB of L2 cache (from 256KB in the Sempron). And all for the bargain basement price of only $55.
All the details including test results are available to read here.




















