The HP Chromebook 14-q039wm supports a 1,600MHz processor memory clock speed which is faster than most notebook PCs that are a similar age to it. Most similar spec notebook PCs that are a comparable 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 in fact the best supported memory clock speeds supported by processor across all comparable spec laptops that came out around the same time as the Chromebook 14-q039wm.
The worst supported memory clock speeds supported by processor amongst similar types of notebook PC is 133MHz.