Does it matter if the monitors and screens are different different diameters from different manufacturers? I have a dell dimension 4550 and I have expanded my memory on the mother board. Will the BFG GeForce 8800GT OC 512MB 256-bit 625MHz GDDR3 PCI-E 2.0 Dual DVI/HDTV+TV Out SLI Supported Video Card work on my machine? Is there a better card or cards I should also look at?