Just under 4% advantage for the dual channel platform! Small, very small difference! I should add that all the screenshots with the socket 754 NV8 can be seen in the old topic where I tested only the first platform for the Athlon 64: Re: Battle of the platforms: socket 754!

16. 3dmark 2000 - 1280*1024
A. Athlon 64 3800 - socket 939
B. Athlon 64 3400 - socket 754

17. 3dmark 2000 - 1600*1200:
A. Athlon 64 3800 - socket 939
B. Athlon 64 3400 - socket 754

And the difference shrinks to less than 1%! Until now Athlon 64 3800 does not deserve its rating which should be far lower than what AMD went for! We shall see if the situation changes in the most popular benchmark on VOGONS: 3dmark 2001.