sudden fps droping while gaming

[noobhys]

i have this laptop
intel core i3 2.52 ghz
3 gb ddr3 ram
ati hd 5470 1 gb vga card
win 7 hp 64 bit
while gaming my game fps suddenly dropping
no matter in which res i run the game even if i run the game on highest settings it will work fine at start then suddenly fps drops to 10-15
games i play
dota 2
loadout
css
etc
this laptop is 2 years old
i noticed that when my fps drops my laptop is overheating is this is what causing it ?
i checked temps while i am not gaming cpu gpu
cpu : 60-70 degree
vgu : same as cpu
this is the temp while not gaming can anyone help my laptop use to run these game totally fine is my laptop is old and i should let him rest in peace ? any fix or i have to buy new pc thanks alot

 

[rex4235]

How often do you clean your laptop?

By nature, laptops are terrible at collecting dust/ debris in their intake vents which would be the main cause of overheating. Lots of people misuse laptops because of their name; running them on beds, blankets, couches etc. All the while sucking up all sorts of fabric strands and dust. I would first start (if you havent already) by getting a can (or two) of an electronic duster and going to town. Just try to blow air into the exhaust vents. Blowing air into the intake will only push debris further into any heatsinks along the way.

 

[JeremyRamsey]

Yes, the cpu/gpu getting too hot will cause the framerate to drop because the computer will be throttling back the power to protect itself.

Dust Bunnies love laptops and if you do what Rex suggests that should help.