Man you should look in the Sager forum. The person who got the Sager 3880 was able to get close to 3000 on the Nvidia 6600 in 3DMark05!
Also here are the data you wanted
Official NVIDIA GO 6600 Website
http://www.nvidia.com/page/go_6600.html
Memory Interface 128-bit
Memory Bandwidth (GBps) 11.2 GBps
Fill Rate (pixels/sec.) 3 billion
Vertices/Second 300 million
RAMDACs 400 MHz

********************************************
nVidia GO 6600 GPU Performance Test
********************************************
*Note:
* All test based upon Asus Z71V nVidia GO 6600
* Asus Z71V STOCK SETTING IS: 250/500
* Toshiba used GO 6600 TC, which is slower
than one used in Asus Z71V
nVidia Driver v71.13
* Asus Stocked Video Driver
3D Mark 2005: 1720 (250/500 Stocked Setting)
3dMark 2005 2018 (275/563)
nVidia 80.40 Beta Leaked
* AA OFF, Resolution 1024x768
3DMark05: 1821 (250/500 stocked setting)
3DMark05: 2121 (290/575 OC Setting)
3DMark05: 2236 (300/600 OC Setting)
* AA 2x, Resolution 1024x768
3DMark05: 1813 (250/500 stocked setting)
3DMark05: 1975 (290/575 OC Setting)
3DMark05: 2072 (300/600 OC Setting)
* AA 4x, Resolution 1024x768
3DMark05: 1523 (250/500 stocked setting)
3DMark05: 1733 (290/575 OC Setting)
3DMark05: 1817 (300/600 OC Setting)