We have a Dell Dimension C521 desktop with the stock power supply (250 W, I believe) and no upgrades, aside from an internal card reader (original from Dell). We want dual monitors for the desktop and it looks like the best bet is to add a PCI-e video card. The computer is used almost exclusively for connecting to a terminal server so it has low graphic card requirements. I was considering the NVIDIA GeForce 210 or 220 as it has DVI and VGA outputs and fairly low power requirements ( http://www.xbitlabs.com/articles/video/display/gf-210-gt220_5.html#sect0 ). I was looking at http://www.futureshop.ca/en-CA/product/bfg-tech-bfg-geforce-210-512mb-pci-e-video-card-bfgr210512d2e/10138649.aspx or http://www.futureshop.ca/en-CA/product/evga-com-evga-geforce-210-superclocked-video-card-512-p3-1211-lr/10134617.aspx The BFG GeForce 210 512MB PCI-E says it wants "300W PCI Express compliant system power ".

I have two VGA-only connection monitors so I figured I'd get a VGA-to-DVI adapter ( http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=162594&CatId=467 ) for one and connect one monitor straight to the card's VGA output and the other through the adapter to the card's DVI output.

My question is would the NVIDIA GeForce 210 or 220 likely work OK on the stock power supply unit if used lightly?

Any other possible issues with this setup?