Have you done any specific research yourself? We do not have all the facts that you have and thus it is difficult to give you a specific recommendation.
Hardware Requirements to Learn Hadoop
Professionals who enrol for online Hadoop training course must have the following minimal hardware requirements to learn hadoop without having any hassle throughout the training-
1) Intel Core 2 Duo/Quad/hex/Octa or higher end 64 bit processor PC or Laptop (Minimum operating frequency of 2.5GHz)
2) Hard Disk capacity of 1- 4TB.
3) 64-512 GB RAM
4) 10 Gigabit Ethernet or Bonded Gigabit Ethernet