The Lenovo T540p supports a 1,600MHz processor memory clock speed which is faster than most medium processor core notebook PCs that have been on the market for a comparable time to it. Most portable PCs of a comparable type and age to it support a 133MHz processor memory clock speed. This portable PC also supports 1 and 333MHz processor memory clock speeds.
A 1,600MHz processor memory clock speed is actually the best supported memory clock speeds supported by processor amongst all notebook PCs that came out around the same time as the T540p.
A 133MHz processor memory clock speed is the worst supported memory clock speeds supported by processor across similar types of portable PC.