Riva 3D heeft na het bekend worden van het feit dat AGP 2x niet helemaal goed gaat werken op een plankje met de Irongate chipset en de GeForce2 een paar benchmarks gedraaid om te zien hoeveel snelheid dit kost:
After discovering that the GeForce 2 also had problems with the AMD 751 problem, I decided to put things to the test and see how much of a performance drop we should expect to see by comparing 1x and 2x settings in 3D Mark 2000 and Quake 3 Arena. These scores were posted by the same machine, containing an AMD Fester reference motherboard with the 751 chipset. I used the latest version of Powerstrip to switch between 1x and 2x mode, as the previous EnableIrongate2x DWORD registry key fix does not seem to work with the GeForce 2 cards. The results are quite interesting.
While most scores indicate a minor performance hit (around 5-7%), what's most shocking here is the results of the High Poly Count scores, which show that the GeForce 2 suffers a significant drop in performance in its 1x AGP 751 restriction, as much as 50%! And stability issues also cropped up, with certain games running flawlessly, while others locked up after a short period of time. This confirms NVIDIA's response to our initial inquiry into the Athlon/GeForce 2/AMD 751 chipset situation.
Het verlies in snelheid is dus niet schrikbarend groot, ongeveer 5% maar met veel polygonen (3DMark 2000) ging de peformance met wel 50% naar beneden!