I feel like a lot of the stuff mentioned for PC cooling, coming from the USA and Europe, may not be too applicable in Malaysia due to our year long hot and humid weather.

My PC is Dell Inspiron 660, got a GTX 960 inside.

My temperature will reach 80C. If I removed the limit, it go until 89C!!!

Before this I got a GTX 750, the temperature much more manageable. Max 72C.

Please share with me some simple tips kawan-kawan how I can achieve better temperatures.

My PC is in my hall, no air con.

I will appreciate this much!

PC tip top. I actually don't notice difference in GPU temperature when its hot daytime or cold nighttime, surprisingly.