I am currently running a gtx 750 ti low profile on a dell OptiPlex 7010 with a 250 watt power supply. Long story short I bought this pc over a year ago in one of those all in one bundles on ebay which come with an i5 and 8gb of ddr3 ram but then some terrible card like a gt710. At the time I didn't know much about computers and it seemed like a good idea but I had planned to put a gtx 1050 ti in it. Once I looked into it I found that it only supplied 50 watts to the gpu slot and had a 250 watt power supply. I took a risk with trying a gtx 750 ti and it has been running fine for about a year. I was wondering whether a gtx 550 4gb would work on my pc and if it wold be worth the switch. I was also wondering how cheap and easy it would be to buy another psu and motherboard which would allow me to use a gtx 1050 ti