Cheers. That's good info.
I run it at work with free electricity, so never bothered measuring power consumption. I simply overclock it using Trixx. I found if I go any higher than 1100/1500 one core starts to throttle around 74~75C. Ambient 26C.
Btw, I can't undervolt in Trixx or AB. Is that because I'm using driver 16.11.x? The voltage setting is locked. I'm thinking about improving the cooling with a push/pull, then maybe give it a few more mV and overclock it more if I can. Any advice here? I can't run 15.x.x driver because I also have a Nitro 470 alongside the 295x2. Unless there's some magical way of installing two driver versions for the two cards...
Replacing that default fan and adding another one for push&pull gives you 5-10C more to play with. If you give it more voltage your pcie power cables & connectors are in danger. Try with hand , if they feel warm/ hot you need to do something.
Trixx doesn't let you undervolt 295x2 but AB does. You sure you checked all those basic amd settings in AB? But with AB you are stuck on -100mV when you actually want to go much lower. This is where you need some basic hawaii bios modding.
Actually only reason why I haven't done some serious modding yet is because they release +20% miners every three days...
I can run the R9 390 with 0.98V and 950 MHz, having a hash rate about 250 and 160W at the wall. 295 should be better than that if undervolted as it uses better quality chips.
High asic quality 2014 = average asic quality 2015
But those are crazy expensive and would take years to ROI.
