CT1950R
CT1950R is a memory upgrade module for Creative AWE64™ cards represented by these models: CT4500, CT4520, CT4390, CT4540, CT4380. This memory
moreThis card offers the same functionality as any PowerVR PCX2 based accelerator plus an extra feature such as a configurable clock generator, which offers these options for graphics clock ( 60, 63, 66, 70, 73, 75, 80, 83, 86, 90MHz). The silicon itself is able to operate at 80Mhz or slightly more.
PCX2 review