Your system has only an nVidia GPU - there is nothing to disable.

This model is built two ways - with integrated video (GM965 chipset) or with nVidia video (PM965 chipset).

The PM965 chipset does not have integrated video.

The chips you refer to are part of the chipset itself - the one near the CPU is called the northbridge;  the one further away is the southbridge.  Both are essential to the operation of the system and neither can be disabled.

So -- though you can choose to believe as you wish, your system actually has only nVidia video -- if there's a cooling problem, it may be time to replace the thermal pads under the heatsinks.  They do dry out with time and lose their effectiveness.

Thank you. But i dont think so. As i said, there are three things under the thermal cooling assebly - cpu, unnamed gpu and nvidia gpu (in the order given). There are several types of vostro 1510 - and for example with or without the nvidia gpu. Laptops withouth nvidia gpu have something like "Mobile Intel(R) 965 Express Chipset video card" - so they have smaller thermal cooling assembly because they dont have nvidia gpu - their motherboards have only free place for nvidia gpu (because it is the same motherboard but without the nvidia gpu chip). So i think that the second thing under the thermal cooling assembly is the unnamed gpu (unnamed because it is nothing written on it). I think the Mobile Intel(R) 965 Express Chipset video card needs to be cooled too. So because i think, that the second thing is unnamed gpu (whatever else?) and because it is too hot and for me useless.. i just would like to know how can i turn it off.