Quake III
256MB of memory matters not here. The textures are simple and even antilasing and aniso. cannot tax a 128MB card. The key is to open up the bandwidth and GPU pipes, push as much data as you can, and hope that Quake III returns a suitably impressive benchmark. The GeForce FX 5600 Ultra v2 is reckoned be a step up in pure comparison stakes, and it features double the memory bandwidth of the 3D Prophet 9600. That's what Quake III loves in abundance.
Last place is becoming kind of consistent and expected now.
It almost feels as if the extra 128MB of video memory is sitting idle during this test.