Not weird at all bob, if the board is really doubling all the mults - 185*20 is 3700Mhz, after all
What it should do, however, is let you change uncore from 12x to 40x or so. 12x being the slowest at 12x185=2220Mhz.

On the LGA1156 CPUs, the uncore mult is locked. For the 860 it's locked to 18x, for the smaller ones like my 750 and the Xeons (I think) it is 16x. I will try an X3450 in a minute, I'll see whether it's 16 or 18 then.
LGA1156 CPUs also don't need uncore to be >= 2x Dram, >=1,5x Dram is enough for them.