I have a 7970 gigabyte that is acting weird. Crashes during games only and when I use gpu z it shows the clock speed jumps from 1000 MHz to 1258332 MHz. Bought a brand new power supply ax1200i to make sure it wasn't that. ( plus I wanted one : ) ... ) I have a second msi card that runs fine. Try a reflash? Btw my card is watercooled? Suggestions before RMA.