I have a Dell Precision 3500 with 2 PCIe x16 slots (both occupied with Nvidia Quadro NVS 295 x16 video cards. I also have two PCIe x4 slot available. I just purchased an Nvidia NVS 295 x1 video card to add to one of the available PCIe x4 slots... is this ok to do? Or am I going to break something?
Yes, they are backward compatible to my understanding.