I have my DFI Expert board with a 3800+ X2 just sitting here with about 8 months of total use. Never tried the SLI, since I'm not really a gamer, but I did overclock the CPU to an easy, and stable, 2.6 GHz, at stock voltages.
Love the overclocks at stock voltages, a lot less stress on everything. It's the best 939 board I ever tried, and one of the best 939 CPUs too. I probably should sell it since I'm using a Q6600 now, mainly for web surfing ( everyone laugh now) though I do some video work, which the Q6600 it is really good for.
I might list my 939 items it in the FS area.