ScienceMark 2.0, Pifast
Please bear the SK8T800's 30MHz speed disdadvantage in mind when comparing the following results.
Just a touch less memory bandwidth can be explained by the SK8T800 running our Corsair XMS3500C2 at 198MHz. The other two boards clock DRAM at 201MHz.
Latency, though, shouldn't be greatly influenced by small deviations on DRAM speed. What's 1ns betweet friends, anyway?.
Pifast paints a similar picture. A slower time is generally the result of slower CPU and DRAM. Driven clock underclocking is a rarity with motherboards these days. A revised BIOS should bump up default clocks to >2200MHz.