You do not have to possibly remove the PSU from the PC to be able to see the wattage sometimes the label is visible on PSU by just opening the case without disconnecting anything.
Now if you provide the Model Number of this PC, either you or I can look it up on the manufacturer's site will most likely give the power supplies wattage.Unless custom build. Need 500 watts for this card to even run, but also matters how much other hardware you have on system, number of hard drives, optical drives,USB Devices and any other slot cards. Everything like that takes some power. On internet find PSU calculaters determine if have enough.
Also would not go ut and buy the adapter yet because most of times the Video card will come with one, no rush for it.
Monitor is decent not high resolution or contrast ratio, but as i said it will work with card, just not provide the best performance for this type of card.
Your welcome post back if need more help or when you are finished with this thread to show how everything was resolved and worked to help others who read it.ty
Edited by jds63, 13 November 2014 - 12:54 PM.