Measure or look up the specs on the case card compatibility and same thing for the power supply. Check the rated wattage, brand and model of the power supply vs what the video card needs. All the needed info can be found with what you have. Size of the card you want will be in the specs for it as will the power needs. You can do a web search for your power supply brand and model to see if it's a decent one enough to run the card.No, good question, how can i check this?
it doesnt fit in the slot