The DELL Inspiron 15 supports a faster memory clock speeds supported by processor than most notebook PCs that came out around the same time as it. This DELL laptop supports a 1,600MHz processor memory clock speed, whereas most similar spec portable PCs that were released more than two years ago support a 133MHz processor memory clock speed. In addition, this portable PC 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 medium processor core notebook PCs that are a similar age to the Inspiron 15.
Amongst similar types of portable PC the worst supported memory clock speeds supported by processor is 133MHz.