GTX 980M on a 180W PSU?

Hey, so right now I have a Clevo P177SM with a 170W PSU (it's not the original one, bought the laptop used with it). Right now, it runs fine.

Specs :

i7-4700MQ
3x4GB RAM
1TB HDD + 256GB SATA SSD
GTX 780M 4GB

But I have plans to upgrade to GTX 980M and
I read that on some laptops 180W isn't enough. So, should I upgrade my charger?

 

It will be fine unless you flash a modded vBIOS onto the 980M that allows it draw more power.

 

On a 170W PSU, made a mistake. That makes it worse

 

It's still adequate but cutting it a bit close. The 4700MQ is ~50W and the 780M/980M is ~100W tops assuming you're using the stock power limits.

 

Yeah, stock. I could downvolt the CPU a bit and GPU, if possible, that would help, wouldn't it?

 

I mean, if 170W was fine before, then it should still be fine.

 

You could always get a 230W brick if you are concerned. Stock the 980M is not that hungry, it's when you overclock it 30-40% that it gets hungry.

 

Well yes, but I'm already on a tight budget and 230W PSUs aren't that cheap.

 

See how you go then, worse case you can downclock a little for now. It's the most performance you'll get at that power level.