New
#1171
Ok thanks for clearing that up, I kinda thought that was the way of it. Cheers!Lol... Sounds almost like my build, I get most things from eBay (newer CPU and GPU currently in transit from USA). Only thing I bought locally was my case and PSU.
Multiple graphics cards would generally either be Nvidia SLI (Scalable Link Interface - Wikipedia, the free encyclopedia) or ATI CrossFire (AMD CrossFire - Wikipedia, the free encyclopedia). Generally speaking, it's to give your PC a performance boost in the graphics-based department.
The basic idea is that the graphics processing is shared between multiple cards... Mostly for gaming rigs and high-end server setups (they sometimes use GPU power to add to the processing power of the server CPU). A good example in games is the ability to have alternate frames rendered by alternating GPUs; so frames 1, 3, 5, 7, 9, ect by GPU 1 and frames 2, 4, 6, 8, 10, etc by GPU 2.