Buy high end GeForce or AMD Radeon Graphics Card. You could buy two of them by crossfire (2 GPU in one motherboard) paired with AMD (choose AMD if your focus is for gaming) or Intel Quad Core (latest for AMD is 8core bulldozer and Intel i7 6core) 8GB worth of Memory should be enough Overheat? Very nice after market Air-cooling system and big Casing for good ventilation if you topped all that you should have no problem in pc slowdown.
Still you must maintain your pc for viruses, malware, and error on Hard disk, those are the top causes of PC slowdown in normal use.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.