As said, it depends on what you want to do with it. It's better than an integrated solution by far, which I try to stay away from anyway. However, the 5450 is really intended to be used for multimedia, which it is great for. You know, video playback/editing, DVD/Blu Ray viewing, etc. However, don't expect to play any modern games. It may run some older games somewhat but it's performance is around, or slightly higher than Nvidia's 210 chip.
Again, it all depends on what you want to use it for.