Ok, good for you, I found they didn't work in 375 or earlier, they changed how you did  this stuff

So it sounds like 384 buys you nothing

For me on my cards I could never modify the transfer rates on the gpu until I had 384 running, earlier device driver had the commands, but they didn't do anything, after I installed 384 everything started working perfectly,  I think I went from 375 to 384, & I'm quite pleased now that it all works