The thing thats wrong with it is that its crippled. Its a 128 bit interface with 12 pipelines.... for $200 you could get a X1800XT which is nearly the same as the X1900XT save the R580 core and 24 fewer pixel shaders. The X1900XT can be had for just about 250-270 these days.
Ok true it isn't an 1800 or 1900xt, even they may have trouble with some of the newer games. However I would expect it to be leagues ahead of any onboard graphics you have been using before, so it is worth some investigation if there has been an installation problem.
Not sure where to point you straight off, assuming that you have installed the correct chipset drivers and stuff. Perhaps running one of the popular 3D benchmarks and posting back will give an idea if it is running properly.
alright thanx for the help guys, i guess i should change to x800,
for the benchmark thing, i run aoempires III with maximum shadow and shader, maximum settings at was so slow, perhapsless than 5 fps, with hi shader and no shadows, its still slow but above 15fps, with no shader and no shadow, its acceptable..
Did you disable the onboard video in the BIOS? Did you install the drivers? Did you uninstall the integrated grahpics drivers? What is the brand and model of your PSU, and what are the amps on the +12V rail?