Few days ago I bought a system on Ebay as it was very cheap and had 4 500GB Samsung SSD's that cost more than what I paid for the hole rig. When I got the PC, I was surprised when I saw that it had GTX 970 4GB plugged into first PCIe slot and a GTX 750 2GB into second and the GTX 970 had original plastic cover caps on all ports while the GTX 750 didn't, I went back to the Ebay listing and there was a picture of the back and the seller had 3 monitors plugged into the GTX 750 and none to the GTX 970. When I first booted the PC and started going thru the settings, I noticed that it was setup so GTX 970 is used in games. I'm really interested to find out why would someone have this weird setup with a GTX 750 just for monitors and GTX 970 to render games? I don't see any performance gains. The only thing I can think of is that the seller used the GTX 750 for monitors output and stream encoding and played games on the GTX 970? If anyone has any idea, please let me know, I'm very interested in this setup.