what is the best computer to perform quick MT4 or MT5 backtest optimizations ?

 
I want to buy a computer that will save me time when I request optimization of my backtests. What should be the characteristics of this computer? knowing that the optimization speed is my priority. Thank you by advance.
 
  1. MT4 is single threaded — any modern machine will do.
  2. MT5 is multi-threaded — Many cores and SSD.
 
William Roeder:
  1. MT4 is single threaded — any modern machine will do.
  2. MT5 is multi-threaded — Many cores and SSD.

ok thanks