There are some great computers for online gaming like the one I have now it is made by Alien Ware and it is the perfect Computer and here is a link for it....

http://www.alienware.com/products/alx-x58-desktop.aspx?SysCode=PC-ALX-X58-R2&SubCode=SKU-DEFAULT

And there are some that I would like to have and I would rather not make a list... So the one listed above is my favorite and it is perfect for the type of online gaming I do.