When the Xserve joined the great server farm in the sky, Mac-minded datacenters everywhere were left without a true rackmountable computer; even the current Mac mini wasn't designed for those kinds of tight spaces. Enter the purposefully anonymous Steve, who just filled the gap with one of the cleverer solutions we've seen yet. He and vendors have developed custom 1U shelving, cooling from car radiators and four-in-one power cables that, combined, fit 160 Mac minis (and a managing Xserve) into one enclosure without cooking the machines to death. With each Mac mini carrying a quad Core i7 and an SSD, Steve now has twice as many cores (640) as an equivalent Xserve cluster despite lower power consumption and a 45-second, network-controlled reboot -- all big helps to his unnamed employer's software development, even with the lack of built-in redundancy for Apple's tiny desktop. As many gritty details as Steve can share are available at the source.