Well, if you didn't already know, I have a laptop that runs at 200-300 fps with medium settings, and 60 while recording, and it has:
- Graphics: nVidia GeForce 230M
- Processor: Intel Core Duo
- RAM: 4GB
- Allocated Memory: 500GB
Depending on how much money you're willing to spend I'd suggest this:
- Tower: AlienWare Aurora 6 Core Gaming Tower (2GB Dedicated Graphics, 8GB of RAM, 6 Intel Core i7 Processors, nVidia GeForce GTX 660, 1TB of memory and Windows 7 Home Premium (Yah you can run Minecraft) )
So there is no need to buy your own when you already have decent stuff intergrated in the computer already. :3
This is the one I have been looking at for a while.
Link:
http://www.dell.com/us/p/alienware-aurora-r4/pd