So my PC is.
Intel Pentium D@3.0 GHZ
3 GB DDR2 RAM
Sapphire HD 5570 1 GB GDDR3
iball 400 watts Power supply with 18A on +12V.
So my problem is that when I play games like Resident Evil 5,everything goes just fine and I get 60 FPS but after about 20 minutes,everything starts lagging like a hell and fps goes to 15-20
making game unplayable.this issue is not with games like Devil may cry 4.
I hunt down this problem and finally I decided to do this.
Changing my mainboard and processor core 2 Duo E7500@2.93 GHZ.
also I notice that my GPU temperature runs in between 55-60c and I feel like it is overheating.
so what should I do? change my motherboard and CPU
or get a good aftermarket cooler or both.
I think I need some good aftermarket cooler.
Please help me and sorry for this long information.
A new CPU and motherboard looks like your best bet, Pentium D isn't considered good by any standard these days. Kind of odd however that it works for a while and then begins to chug. 55-60c is normal for a GPU, could you CPU be overheating?
Just clarifying, did you mean the 5770?
If you are looking to replace the motherboard you'd be better off going AMD due to price/performance along with upgrade path. The C2D is a dead end meaning there are no new processors being made and the current CPUs are going to be raising in price due to lack of production.
However, if your current motherboard supports C2D this could be the cheapest/best route to take. What is your current motherboard?
It does sound like you are having heat issues. Try cleaning the cpu heat sink of any dust and run it with the side of. If it runs fine after that you have a problem with airflow in the case. If not you may want to replace the heat sink. The reason I say may is because something like your north bridge overheating can cause the same issue.
how to check my CPU is overheating or how to check the temperature?
If you take off the side of the case it should let you know if the heat is from poor airflow in the case, I would start there. You also need to clean out any dust because it will easily cause your system to heat up.