For both CPU and GPU I would recommend 40C while idle and no more than 85C under load. Heat is the main reason why gaming laptop die and high performing laptops generally produces a lot of heat.
I would recommend a laptop cooler to help lower temps. However, a laptop cooler effectiveness depends on the design of the laptop chassis. Based on my experience with the Lenovo IdeaPad Y470, the chassis is not designed very well at all for laptop coolers. I have a Coolmaster laptop cooler which allows me to strategically move the two fans around the cooler itself depending on where the air vents are on the laptop. Even placing the fans under the Y470's vents, the temperature did not drop.
Thanks for the reply bro. I just wanted to make sure things are not getting to hot. My CPU durning BF3 beta and also BFBC2 are around 60c'- 67c and the GPU temp was 70c - 77c. So these temps are safe and ok right???? Thanks again man.
Thanks bro. Yea I dont maybe ok temps. I wanted to make sure that they are good for a gaming rig......and from all the reading I have done these are really good temps. I have heard people saying that CPU under 80 is good, and GPU under 90c is good. So I am in good shape! =)