Is it worth upgrading the Asus K50AF cooling system?

Question

laptops

Given: Asus K50AF, CPU AMD Turion M520 2.3 Ghz, 3GB RAM DDR2, GPU ATI Mobility Radeon HD 4300/4500, HDD 250 GB, OS Windows 7 Ultimate

32 bit 80-90 in loads. It is used as a typewriter for the Internet, communication, work in web applications in the browser, some graphics and an office with reports. Sometimes I play old games up to 13-14 years old, suitable for the requirements.

Initial conditions: maintenance according to the regulations with cleaning and replacement of thermal paste. TDP CPU 35W and a simple CO on one heat pipe made itself felt, and 5 years after the purchase (it was taken in 10), the bridge fell off, after replacement - after a year of the schedule. After replacing the graphics, I use it carefully, but still the machine heats up decently even in undemanding tasks.

Question:is it necessary/possible to do something with the efficiency of CO? In theory, I looked at several options:

• Coppers + liquid metal or expensive paste - knocks down only in idle time, and even then not very much;
  
• Replacing the stone with a less aggressive one - the Mobile Sempron at 25W becomes in the S1G3 socket, but we get a drop in frequency and minus one core. It will work for XP, but it is preferable to use the machine under 7;
  
• Configuration change - this series of machines went to AMD and Intel. Ideally, on paper, you can convert K50AF to K50ID / IN by changing the motherboard - get a lower TDP, DDR3 memory and a more aggressive video adapter. Looks nice on paper, but no one I know has that experience;
  
• I also found an option with handicrafts - a person put a manual toggle switch on CO in order to independently twist the speed
  

Please tell me from experience how to cool this machine. I will add that this is no longer a laptop, but something like a candy bar for working on the weekends. The battery has been degraded for a long time. Using it in an elevated position on a stand with active coolers does little to help. The option to change the motherboard seems reasonable, but risky, all other alternatives are from the evil one. If anyone has experience with the fight for the survivability of these machines, I will be glad for any comment. Thanks in advance

PS: although the processor supports 64 bits, and it was 64 from the factory, it moved to 32, because. over time, the device began to work inadequately. At 32, the flight is normal, only the heating worries