ThinkPad P40 and Aspire 3 A315-51 share specifications such as Operating System Architecture (64-bit), Processor Manufacturer (Intel), CPU Architecture (x86-64), CPU Process Node (14 nm).
The main differences: Processor Model (ThinkPad P40: Intel Core i7 6600U 2.6GHz, Aspire 3 A315-51: Intel Core i3 7130U 2.7GHz); GPU Model (ThinkPad P40: Nvidia Quadro M500M, Aspire 3 A315-51: Intel HD Graphics 620); Installed Memory (ThinkPad P40: 8 GB, Aspire 3 A315-51: 4 GB); Storage Capacity (ThinkPad P40: 512 GB, Aspire 3 A315-51: 1000 GB).
ThinkPad P40 may suit users who need its differing values, while Aspire 3 A315-51 benefits those who need its paired strengths. Review the specs table above before deciding.