Games drop to to 15 fps for atleast 4-5minutes then come back to 60fps

[va5]

Laptop SVS13A15GGN

http://www.sony.co.in/product/svs13a15gg

Intel® Core™ i7-3520M Processor 2.90 GHz with Turbo Boost up to 3.60 GHz
Windows® 7 Ultimate 64bit
HDD: 750 GB
GPU : NVIDIA® GeForce® GT 640M LE 2 GB
RAM: 8 GB

FPS drops in Games like Assassin's Creed 4 , Crysis 3 , Remember me , etc.
This did not happen before.
I have tried all steps in this guide . http://www.mediafire.com/download/stv1lq9aamus4yb/Simple+Guide+to+optimize+your+PC.pdf

 

[Tobias Kuess]

Do they drop and stay low for 5 minutes? Or do they drop every 5 minutes?

 

[calza]

Are you the temperatures like?

Could be throttling back to cool down.

 

[va5]

Do they drop and stay low for 5 minutes? Or do they drop every 5 minutes?

its like they drop for 15fps 5min and come back after 5min again. so there is a gap 5-6 mins gap for playing at 60fps..

 

[va5]

Are you the temperatures like?

Could be throttling back to cool down.

what do u mean by that ?

 

[calza]

I think it's getting too hot. So it's reducing the performance to reduce stress and temperature (and fps). Then when cool putting it back up.

 

[va5]

I think it's getting too hot. So it's reducing the performance to reduce stress and temperature (and fps). Then when cool putting it back up.

yeah it maybe true but this has not happened before to my laptop.

 

[calza]

Dust builds up. Thermal paste degrades.

Won't take long to investigate

 

[Tobias Kuess]

I am pretty sure, as far as I can tell over the internet, that this is a temperature problem, like calza stated before. Your components heat up during load produced by the game you are running, and getting hotter and hotter. As soon as they reach a certain temperature your CPU or GPU clock goes down to prevent damage from overheating, this means that your system will now run a lot slower. As soon as they cooled down a bit, they start to run at full clock again, till they reach a hot temperature again - then the circle repeats.

That's what heat throttling means. The reason why it has been running fine before is propably dust which blocks the heatfans so air can no longer go through them

 

[va5]

So i ] think i will clean it.
Thanks guys.

 

[va5]

How would i clean it without vacuum cleaner ?

 

[calza]

Is it still under warranty?

Are you confident taking a few bits off to get access?

Failing that, turn it off let it cool and use compressed air?

 

[va5]

Is it still under warranty?

Are you confident taking a few bits off to get access?

Failing that, turn it off let it cool and use compressed air?

will try