You can get one of these to run Windows.They do play WoW well, the problem is all of that power won't matter. These computers are for programs that have been coded to use the Nvidia Tesla GPUs. One of the distributed computing centers I frequent has one of these. They use it for artifact imaging. Thats all their good for, the impact on a consumer program is minimal at most. Give it a 2 billion frame 3d movie and it can work on that, or give it a complex 3D model that needs to be meshed for Finite element analysis or a complicated flow system that needs to be tested in ANSYS or any other CFD programs. It will tackles those like a champ, these are made for the companies or person(s) that need quick rendering but cant afford to have a distributed computing system.