+1
Yes, build your own is always better for top performance in gaming..off the shelf computers is for bookworms/accountants...
Gaming/Simulations are very demanding on your system...and off the shelf are really not designed for this..so building is the best and only option..on the other hand you do/will get lucky from time to time with a off the shelf system but I wouldn't recommend it..:thumbup:
A good example is " Alienware " they made the best systems around for " Gaming/Simulations " until " Dell " got their hands into the mix...now you get a watered down version of the original..