Laptops have horible cooling.Most vent on the bottom and sides and most of the time they are covered up(thats why it's called a "laptop" but maks cooling impossible).Very poor air circulation would lead to high temps.
Seems that their are lots of people getting high temps with the same card as you.Mostly a laptop thing.
My reccomendtion would be to set the fan speed to 80% if u can.Or set-up sometime of profile for the fan.
Also a great idea that Helltech said was to get a cooling station.
Max temp for 5650 is around 90c maybe a little higher but it's right on the edge.You should tihnk of a cooling soultion and don't do anything strenious so that it doesn't overheat.