title: how to check if a motherboard support Multiple-GPU?
body: <p>I'll be working on a research project with the integrated use of multiple GPUs. I'm thinking of setting up a Desktop with multiple GPU first.</p>
  
  <p>I currently have a <a href="http://www.msi.com/product/mb/P55-CD53.html#/?div=Detail" rel="nofollow">MSI P55 CD53 motherboard</a>, with Intel I5-570 CPU and Nvidia GTS 250 GPU. I want to buy at least another 2 Nvidia Graphic Card to add to my existing desktop.</p>
  
  <p>Is there any resource I can lookup, so that I can know if it's feasible to do, and what Graphic Card I should buy?</p>
  
  <p>Thanks a lot.</p>