

An application server is a server computer in a computer network dedicated to running certain software applications. The term also refers to the software installed on such a computer to facilitate the serving (running) of other applications.
A database server is a computer program that provides database services to other computer programs or computers, as defined by the client-server model.
X uses a client-server model: an X server communicates with various client programs. The server accepts requests for graphical output (windows) and sends back user input (from keyboard, mouse, or touchscreen). The server may function as any one of:
* an application displaying to a window of another display system
* a system program controlling the video output of a PC
* a dedicated piece of hardware.
A peer-to-peer (or P2P) computer network is a network that relies primarily on the computing power and bandwidth of the participants in the network rather than concentrating it in a relatively low number of servers.
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Now, that's settled let's look at the other possibilities.
A workstation, often colloquially referred to as Unix workstation, RISC workstation or engineering workstation, is a high-end technical computing desktop microcomputer designed primarily to be used by one person at a time, but can also be connected remotely to other users when necessary.
Workstations usually offer higher performance than normally found in a personal computer, especially with respect to graphics, processing power and multitasking ability.
At its main console, a workstation is optimized for displaying and manipulating complex data such as 3D mechanical design, engineering simulation results, mathematical plots, etc. Consoles usually consist of a high resolution display, a keyboard and a mouse as a minimum but often support dual displays to double the viewable information. For advanced visualization tasks, specialized hardware such as SpaceBall can be used in conjunction with MCAD software to improve depth perception. Workstations, in general, are usually first to offer accessories and collaboration tools such as videoconferencing capability.
And now the Hi End Gaming Computer.
Example Gaming Rig/Workstation
You can now have a base to work from. This way you can check out gaming rigs of AnandTech gamers to better understand what works and what's Dreamworks.
