While the HD Graphics 7520G is faster than the Intel's HD Graphics 3000
( in the 2nd generation core ix processors), it is slower than the HD Graphics 4000. The HD Graphics 7520G is part of the low end Trinity APU from AMD. While the top of the line Trinity is much faster than the HD Graphics 4000, this is not true for all of the Trinity line. Let us take a look at some benchmark results to prove the point. Windows 7 Gaming Graphics Experience Index
Though a crude measurement, the Windows 7 Experience Index shows off that the HD Graphics 4000 is better. 3DMark 06 Benchmark
Again HD Graphics 4000 wins.