cuda7.5 is not a fastest one for alexis )) Stop fooling around
No cudatoolkit run faster than my mod. The alexis miner is compiled with compute 5.0 and 5.2 (maxwell) and on pascal the results will vary with the driver. When you upgrade the driver, alexis legacy code is recompiled with the latest NVIDIA developer optimalizations.
My test is conducted with one of the latest drivers. 390.65
For keccak, the alexis miner is running best with cuda 7.5 32 bit and the latest driver.
On a more expensive 1080ti with higher intensity and more power my mod can do 1600MHASH, The alexis miner use more power and heat and trottle down to 1400