c# - How to make console writeline only when read memory has changed? -

i need little here. have program reading memory , writing memory console in while loop, example

while (true) {        console.clear();     console.writeline(readmemory);     thread.sleep(1000); } 

this useful , flickers , slows program since using "thread.sleep" there way output read memory value console , not update unless has changed?