lol, seems they were popular indeed, also use some DDR400 in a s939 media centre, and still use the DDR2 ULL in my system...never missed a beat really. Mine run at 865mhz 4-4-4-12 with only 2.05V, if only my mobo could give the 2.3V they can take, I bet they would hit 1GHz easy
Will be using some in an upcoming ddr3 build no doubt.