SSJ I use the FTW12345's little tool 2.1.2 on my 980 KPE card to raise the voltage on the GPU and Vram. I'm not sure if it will work on any non KPE/Classified cards. I will tell you these cards do not scale well with voltage on ambient cooling. They really need to be taken cold to get them to move. The card will basically tell you when it's not cold enough for X volts, at least mine does. I will usually just black screen when I'm feeding the 980 too much voltage and/or am not cold enough. I've been using my cold loop on the 980 and with 3c water I can't run it above 1.33x volts but at -6c water I can go up to 1.35 v, on DICE mine has seen 1.4+ v.