Re: CCminer(SP-MOD) Modded NVIDIA Maxwell / Pascal kernels.
The problem is there's probably 50+% of nvidia users out there that mine in P2 mode and just don't know how to force the miner to P0. So +400 will only be something like "+200 from stock" for a lot of folks. 
That's basically a OC. Also not sure why you'd go through the trouble of forcing p0 when you could just OC the memory right out of the gate. Less messing around. Maybe makes your OCD feel better? It doesn't seem to increase voltage to the memory and it doesn't allow you to OC the memory further.
