Precision 3520 and PL60 7RD share specifications such as Display Size (15.6 inch), Display Resolution (1920 x 1080), Form Factor (Clamshell), Operating System (Windows 10).
The main differences: Processor Model (Precision 3520: Intel Core i7-6820HQ, PL60 7RD: Intel Core i7 7500U 2.7GHz); GPU Model (Precision 3520: NVIDIA Quadro M620, PL60 7RD: Nvidia GeForce GTX 1050); Installed Memory (Precision 3520: 16 GB, PL60 7RD: 8 GB); Storage Capacity (Precision 3520: 256 GB, PL60 7RD: 1000 GB).
Precision 3520 may suit users who need its differing values, while PL60 7RD benefits those who need its paired strengths. Review the specs table above before deciding.