Surface Book i7 is extraordinarily quick for a portable PC in its class, offering double the execution of the first Surface Book. Improved speed, graphics and battery life in a similar, crisp design. Detachable tablet comes included, as does the Surface Pen. Has USB ports and SD card slot. Describing it as the “ultimate laptop,” Microsoft exec Panos Panay said the design goal of the updated Surface Book i7 was simple: “We took the Core i7, and then we gave it more.” Specification Processor Intel Core i7-6600U 2.6 GHz (Intel Core i7) Graphics adapter NVIDIA Maxwell GPU Surface Book (940M, GDDR5) - 1024 MB, Core: 953 MHz, Memory: 1252 MHz, GDDR5, 10.18.13.5415, HD Graphics 520 Memory 16384 MB , DDR4 1066.7 MHz, 10-10-10-28, Dual-Channel Display 13.