The Lenovo X230 supports a faster memory clock speeds supported by processor than most medium processor core notebook PCs that are a comparable age to it. This Lenovo notebook PC supports a 1,600MHz processor memory clock speed, whereas most laptops of this age and spec support a 133MHz processor memory clock speed. In addition, this notebook PC supports 1 and 333MHz processor memory clock speeds.
A 1,600MHz processor memory clock speed is in fact the best supported memory clock speeds supported by processor across all portable PCs that have been available for around the same time as the X230.
Across similar types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.