Don't know what transaction booster does, but the clock twister will lower the "Performance Level" memory option, granting better memory bandwith, albeit, at the potential loss of stability.

and by the way, with 0605, setting my ai clock twister to light, leads me directly to CrashFree bios recovery... i have no clue why.. after i save, that's the first thing i see, and it will just loop until i feed it a bios file. Happened twice (had to try again :P)