You are the first that proof the big increase that i was telling with core and rxboost :-)
Because of your mem errors your strap i bet yourstrap is to tight,i run 2150 without any error up to 2200
Don't think anyone is denying your claim.
Some cards get a very small gain (0.2Mhs)
Most of miners use 1 click patch so these straps are the most used, the best result I can get on 6x584 rig is 194,2Mhs
Care to share your strap for Samsung?