The document compares the specifications of three gaming devices: the Nvidia Shield, PSP Vita, and Nintendo 3DS. It analyzes their CPUs, RAM, graphics processors, displays, audio output, software, power supply, and storage. The PSP Vita has the most RAM at 512MB. The Nintendo 3DS has the smallest storage at only 4MB. The document concludes that while each device has strengths and weaknesses, the PSP Vita has the overall best specifications based on the criteria considered.