It says in the description:
Features/Specifications
Interface: AGP 64-bit
S3 Savage4 Chipset
32 MB 125MHz DRAM
270MHz RAMDAC
Texture compression S3 DirectX 6. X (S3TC)
128-bit Graphic Pipeline
1920 x 1200 @ 75 Hz
32-bit true color - rendering
Start up Driver On CD-ROM, & User Guide
So it's a 32mb card, not 64mb.