can i put a gtx 750 ti 2gb in to my pc?

[moneyeater]

can i [strike]but[/strike] put a gtx 750 ti 2gb Gainward Golden in to a ecs geforce 8000 series motherboard (500w power supply) and i have a ddr2 2x2gb and can i switch a geforce 9800 gt to a gtx 750 ti 2gb Gainward Golden?

 

[imsqam]

It would be better if you gave the mobo part number for research. If you don't know it then use this free, safe program to pull your system information.
https://www.cpuid.com/softwares/cpu-z.html

Chances are pretty good that it will work but to be sure really need to mobo PN. The 9800 is a 105W GPU that requires two 6-pin PCI-e power connections, the 750 Ti is a 75W that generally pulls all of its power from the PCI-e slot.