There is a review of this card here
This is the only 7800GT card with 20 pixel pipelines available on AGP. Then along with its 512MB of super-fast GDDR3 memory making this the worlds fastest AGP card ever produced. There are only 2500 units available worldwide!!
- GeForce™ 7800 GT GPU running at 425MHz
- 512MB 1200MHz high speed GDDR3 memory
- Superscalar 20-Pipe GPU Architecture
- SILENT Cooling solution
- High-Speed DDR 256-bit Memory Interface
- Dual 400MHz RAMDACs