piyush2601 :
my processor is inter core2duo 4300 1.8 ghz
and temperature of my cpu goes to 53 to 57 degree Celsius it it normal ?
my country is india
and also when fire up google chrome it shows much lags
help to get rid of it
Have you cleaned out your CPU cooler lately? It might be clogged with dust. Also check your case fans(if you have any) as well. That temperature doesn't sound bad. Also with a 1.8GHz dual core Chrome will lag with quite a few things running. I have an old laptop with a 1.8GHz dual core 2GB RAM and it usually lags if I have more than 3 tabs running or more than 5 tabs open. It also depends on how much data you're loading. I'd suggest upgrading. If you don't want to upgrade, you should check for background processes to clear up data and check for registry errors.
Judging buy the specs of your CPU I'm guessing it's socket is LGA775. If it's not DO NOT BUY THESE.
Good Cheap Desktop Intel LGA775 Dual-Core CPU:
http://pcpartpicker.com/part/intel-cpu-eu80570pj0806m
Good Cheap Desktop Intel LGA775 Quad-Core CPU:
http://pcpartpicker.com/part/intel-cpu-hh80562ph0568m
If it's a laptop, you'll basically have to buy a new computer if you want a better CPU. I'd suggest getting a desktop.
So in short, it's probably the CPU cooler if it's a temperature issue. However, I think your Chrome is lagging because your components aren't good enough. You should have at least 2GB of RAM and a dual core running 2GHz or higher in my opinion.