Choose Between 24 bit and 32 bit

For True Color mode, some graphic cards offer 24 bit while some offer 32 bit. Which is the best? When True Colour mode was first suggested, it utilizes 32 bit which was very pleasing to the eye, they realize that 24 (with less coolers) won't look much different since the human eye can only take about a certain amount of colors. On the other hand, 24 bit will run faster compared to 32 bit because it uses less colors. So if your card utilizes 24 bit, don't worry, it isn't bad.