In that case Gass3d, I would go with an i5 760 instead of the i3 540 and add in an small ssd, like a 60 to 120GB OCZ Vertex 2 Extended and you'd be laughing with the performance you'd be enjoying with it! Still keep the 500GB or upgrade it to a 1TB and use it for a data storage disk so that way you've got all of your important stuff on a separate drive
