@robgeb

0T is not possible. This is controlled by only bit - off means 1T, on means 2T:

"Enable 2T Timing (En2T)—Bit 28. When this bit is set, DRAM commands and address will be driven for 2 clock cycles and qualified with an associated chip select on the second phase of the two-clock command and address"

@john3 - yes it can tell you various settings for memory controller but you can also change one if your BIOS can't. Calculator is in handy if you want to overclock, it can help you to "simulate" what happens if you change various parameters (multi, HTT, memlck, ODC, LDT).