"AsusTek Computer has steadily built a solid and deserved reputation as a motherboard supplier, but it's also a large maker of nVidia-based graphics cards. Its Asus AGP-V8170DDR, based on the nVidia GeForce4 MX 440 chip set, is a good fit for business users. But while the card has a decent software bundle, it doesn't really pass muster for today's 3-D gaming."
it's a mx440 like you said
do a benchmark (3dmark 03 and 05) www.guru3d.com
<--can be found there and all three cards
i'm pretty sure it's not as good sa your PCI cards..but that's just a guess