I have a Dell Optiplex 380 which has a 250-watt PSU, and I want to install a PNY GT 730 1GB into it for dual monitor support (spare video card laying around). I will not be gaming on this computer, as it is used for work. The 730 has a recommended minimum power supply of 300-watts. Should I upgrade the psu, or will I be okay with the stock power supply? I'm somewhat afraid of the PC going up in smoke and losing all my data or causing a fire. Also, the card is designed for an x8 slot. Will this work okay in the x16 slot, and will I need to reconfigure the BIOS? Thanks!