If you need a big, badass box that can support tens of terabytes of memory, dozens of PCI-Express peripheral slots, thousands of directly attached storage devices, all feeding into hundreds of cores that can span that memory footprint with lots of bandwidth, you do not have a lot of options. This is one reason why IBM still has a Power Systems server business based on its Power family of RISC processors, which support IBM’s homegrown variant of Unix, its proprietary and venerable IBM i (formerly...