Thinkpads Forum

Hi,

I'm thinking of buying a new X61, but I know the screen is not the brightest, only 150 nits on max settings. Together with CCFL fading, does anyone know what is the usual lifespan for such a screen before it becomes too dim?

Thanks!

According to a study:

CCFL life time is determined as the time at which brightness of lamp is 50%. But we'll start to complain at a time well before this 50% happens at 30 to 50 thousand hours.

CCFL Life Prediction Graph.

It will take 2-2.5 years for you to notice it.

Thanks very much the information! I see that having the screen on for 4 hours every day for a year will yield around 10,000 burning hours. Looking the graph you linked to, I agree with your 2-2.5 years statement.