It may not help much, but I do know there are some Quadro cards with what seems to be an on-package PCI-E bridge. It's a bit hard to tell since I can't take the heatsink off (just have to look in the small space between the board and heatsink), but it's cooled using the same heatsink as the processor and the bridge is not right next to the connector as in other obviously bridged cards that I've seen.
I believe this one was a Quadro FX 330, but it was a couple weeks ago, and I don't really have much time to look around, install coolbits, etc while testing the systems.
Edit:
By memory type, are you asking TSOP, BGA, etc? If so, the card had TSOP type chips. Also, looking at nvidia's website, the memory bus is 64-bit, and bandwidth is 3.2GB/s so that would be 200MHz/400MHz effective.