Is it safe to overclock a laptop video card?

[PetarV]

I was wondering if it is safe to overclock my laptop with a 960m.I use it 2 to 3 hours a day.I do use a laptop cooler, I think its a must have for gaming.I can get +135 core clock speed (base is 1097) and mem clock speed +1000 (base is 2505).What difference will that make and how should I overclock it to be safe enough?Thanks in advance

 

[SkyNetRising]

Just don't. It's a really bad idea to OC a laptop.
Laptops usually don't have any thermal headroom for that and it's really easy to cause permanent damage.

 

[Slow Pri]

It's just a bad idea to OC anything relating to a laptop. Heat is a bad thing especially with laptops. I'd avoid it.

 

[starscream27]

as others have said, i'd advise against it

 

[jsmithepa]

If you can disassemble the laptop, so you can attach an heavier duty cooler to the GPU, to dump the extra heat, go for it.