Nvidia 940m vram overclock

So I've been thinking about overclocking my laptop's vram.

Would this be safe? What would I need to be cautious about?
I've seen several articles online but not many that specifically involve laptop vram overclocking.

Gpu specs(according to nvidia inspector):
Nvidia 840m
Memory size: 2048MB
Bus width: 64 bit (14.4 GB/s)
Memory type: DDR3 (samsung)
Current memory clock: 900 MHz

The laptop is an HP envy 15

Thanks for any help.
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  1. Best answer
    I don't recommend Overclocking any laptop gpu as most laptop will run during and Overclocking may send them to an early grave. Vram Overclocking would be the same thing as increasing the memory clock.
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