[RobRich]

Quote:

While all of these new chipset products which are being launched today are based on the same core architecture, Intel has segmented this one architecture into four individual products. Those four products are the G45 Express, G43 Express, P45 Express, and the P43 Express. As implied by this naming schema, these four products are very close in terms of features, capabilities, and performance. The P45 and P43 products are the “high-end” and “low-end” models which do not have integrated graphics support, while the G45 Express and G43 Express are the "high-end" and "low-end" models which do have Intel’s new integrated graphics engine, the X4500 / X4500HD.

Source: HotHardware