FiringSquad has posted a AOpen GeForce2 review. Here a snippet:

The scene here was pretty grim. From experience with other cards our first attempt to overclock the card was by a 20 MHz increase. No dice, the card crashed and burned. Halving that amount we tried again, no luck. We tried the next few digits left to us. In the end we could not manage a 1 MHz overclock with the card. Using either the drivers provided with the card or with the 5.22 reference drivers. So no overclocking with the card we had. I doubt this is a common occurrence with a typical PA256Pro card. Just as we have CPU´s that overclock by insane amounts there are always the occasional duds that go nowhere.

Check it out