Here is what I can offer:
7800 GTX SLI
X1800 XT
CrossFire
You know, I looked at this picture and wondered "where is the CF bridge?" Then I remembered that you had to have a Master and a Slave card to run CF with the X1800's and X1900's that used a "dongle"
X1900 XT CF
ATI 3870 CF water cooled
ATI 4870
4870's CF water cooled
BFG GTX 275
