I want to know whether GPA is supported on G41 chipset with x4500 graphics card.
And what about H61 chipset with G630 CPU (the graphics card seems is in HD family)?
It depends on what you mean by supported... each Intel graphics device has different h/w counters (or none for older systems), and Intel GPA will do the best it can with whatever the h/w supports.
The G41/x4500 is an older system with fewer CPU/GPU metrics. I'm not familiar with the H61/G630 combo, so can you check more on the specific graphics (such as HD2500) so I can tell you what to expect?
By the way, please see online help for which metrics are available for different graphics devices: