Unfortunately, not very well at all. The games are rather CPU-intensive, probably a bit too much for that old C2Q, and your GPU is just not at all fast by modern standards. The games are also not the best optimized games ever, so that'll add to your performance woes. Feel free to try them out though and report back as I've personally never run any of the AC games on anything slower than an i3-2120 and HD6950, so I can't speak on how well they scale down with older hardware.