Is 75 C degrees /(165 F) good CPU temperature? I have AMD Athlon 1GHz and Titan Majesty fan. Is something wrong? Can I affect it by updating my BIOS? Is that gum-like stuff essential for heat reducing?

Turn of your system, and get some cooling. My pc is on for 15 hours a day. (amd athlon 1GHz) and get not past the 50c. 75 is very hot, if you run all day on that temp, you can buy a other cpu in short time. And the gum like stuff, leave it on your fan.

I have a amd 1.4ghz, mine is running at 118 degrees fahrenheit right this moment. I have it set to alarm overheat at 140 degrees. Looks a little warm to me. What kinda motherboard do you have and I dont think your going to find anywhere in bios to change that.

amd 1.2 ghz athlon. mine is running all day and its at a steady 52 C 123 F in summer that shoots up to about 65 C. and its warning is set for 75 C. in short you need to get some more cooling (better cpu fan and case fans) especialy if its not summer right now.

I have an AMD Athlon 1.4 Ghz on an ASUS A7V which runs at 47 Centigrade when idle and 54.5 centigrade when i "give it some", ie run 3D mark 2001. I used to have 8 fans running in my tower and it sounded like a high powered turbo hairdryer. Eventually i cut a hole in my case with a dremel directly over my cpu and mounted an 80mm fan blowing onto the cpu. I still have a cpu heatsink fan mounted. Then i cut some cardboard up to create a tube around the fan to direct the airflow from the case mounted fan to the cpu. The cardboard tube is approx 60mm long and the diameter decreases as it comes closer to the cpu heatsink which therefore increases the airspeed. As a result of this i now have this one fan blowing in and (including the fan in my power supply) 2 fans blowing out. I also have made sure that there is slightly more airflow into the case than coming out to create a positive presure in the case. AMD Athlons tend to run at high temperatures, they are the V8's of the processing world, ie pure power, and they like it!!! Be wary of temps over 55-60 degrees centigrade. As long as you have a good airflow through your case, blow in from the bottom and pull out air from the top as heat rises you should be ok. Phew.....

Make sure the heatsink & fan for the processor r not dusty. If that's not the case, check to see the ventilation holes fm the power supply (bottom & side) r not dusty too. A bad ventilation can easily create heat inside the case. I usually clean them up every 4-6 months. If u have an extra slot, u may add a "Slot fan" too. I just installed a video card couple weeks ago & I can feel the air coming out fm the Power Supply fan was kind of warm. So, I bought this "Super Duper slot fan"($10 + s&h) & this little sxxker really does the job. It's thin enough to sit next to my video card. Now, at least I have a peace of mind. Hope it's helpful to u. Good Luck.

Make sure you have your heatsink on the correct way around and seated firmly 75 is way too hot