yes it is possible to run the card without watercooling. But you will need watercooling to start off with. After you set up watercooling, go get something like msi afterburner, underclock and undervolt the card to around 20mhz and get the lowest voltages you can. After that, remove the watercooling loop from your graphics card. And then start a gpu stress tester. If the card doesnt go above 80 degrees, it is fine, if it does, continue underclocking and undervolting.