Hynix you copy the 1500 timings to all higher timings, while with Samsung, you copy from 1750.
Thank you!!!! Yep, now I see my problem with my Samsungs is that I was copying the 1500 timings as well, and for that reason my cards were refusing to run beyond 1875 and I was maxing them at 25-26 MHashes. I was going to experiment this weekend precisely copying the 1625 or 1750 timings, but now you have saved my time. Thanks again ;-)
after you change the timing what clock rates do you run I haven't tried it yet but was thinking of it I'm running a little over 20 on stock clocks but if I can mod the timings and get to 27-28 that's a big difference