nVIDIA's 6600GT core must be selling like hot cakes. Performance is great, so is the price. The only problem now is that there are so many different boards to choose from. [H]ard|OCP have a set of PCIe and AGP boards on test.
Once again, we saw no gaming performance differences between the PCI-Express GeForce 6600 GT and the GeForce 6600 GT in AGP format with the HSI bridge chip. If you are concerned that going AGP right now may be holding you back in gaming performance, we have proved this is not the case. In some of the most demanding games out today that we have tested, we are simply not seeing PCI-Express providing a performance benefit in current mainstream video cards like the 6600 GT.
[The review]