You could certainly argue that Apple is the company which has ushered in this post-spec era.
[…] the Mac Pro introduces a completely new pro desktop architecture and design that is optimized for performance inside and out. With next generation Xeon processors, dual workstation-class GPUs, Thunderbolt 2, PCIe-based flash storage, and ultra-fast ECC memory, the new 9.9-inch tall Mac Pro packs an amazing amount of power into an incredibly small package.
“With the latest Xeon processors, dual FirePro GPUs, ECC memory, PCIe-based flash and Thunderbolt 2, all built around a revolutionary thermal core, the next generation Mac Pro is the most radical Mac yet,” said Philip Schiller
— Apple Gives Sneak Peek Into the Future of the Pro Desktop
Spec-tacular. Also, post-PC.