Location. Temperate grasslands are located north of the Tropic of Cancer (23.5 degrees North) and south of the Tropic of Capricorn (23.5 degrees South).The major temperate grasslands include the veldts of Africa, the pampas of South America, the steppes of Eurasia, and the plains of North America.limate. Temperate grasslands have hot summers and cold winters. Summer temperatures can be well over 100 degrees Fahrenheit, while winter temperatures can be as low as -40 degrees Fahrenheit. They typically have between 10 and 35 inches of precipitation a year, much of it occurring in the late spring and early summer.
In summary, certain conditions can force a heat pump into a defrost cycle (or cooling cycle) where the fan in the outdoor coil is stopped, the indoor fan is stopped or electric heat is turned on, the frost melts and is removed from the outdoor coils.
I bet it is your cpu fan speeding up due to a increase in heat. I am not sure if this is likely but I think the new video card might have stressed your power supply and your power supply is now causing your computer to over heat. Just a guess.The cpu fan will normally rev up when your cpu is getting hot.he problem would be identifying which fan causes the noise. Either CPU fan, chassis fan or even the power supply fan. If I were you I would open my case side door and see what's inside, maybe snap a picture. and then first try to disconnect the chassis fan, since it's the easiest and cheapest to replace.