Well just so you guys know.. cooling the actual capacitors reducing power consumption. Since I pulled the card back apart I removed the pads from the primary line up caps and remove a couple other pads.
Immediately after doing this, my VRM went from 81C before to 86C. I could now smell "Burning" from the power supply, which I did not smell before. Not to mention the Input to Output power went up about 20%.
So if you want to cool the card, you want to cool all the capacitors, because as they heat up... Obviously i've said this 100 times, the resistance increases... meaning more power... they use more power the hotter they get.
This is annoying but it is what it is... Pulling it back apart but I think I'll use "Thermal Glue" to bridge all the caps together so it's permanent not so hideous looking. I'm trying to dial these in to operate properly on a 500w low efficiency power supply.@robnitro
I'm on a 999w limit from 1422 max to the low end of 1316mhz on 74c max temp 84c hot spot. The card will ride on the hotspot and just below if caps are cooled at 1316Mhz error free. So ideally 1316mhz is probably the max for 5k really for no throttling. However when it does hop to 1366 to 1388 to 1422mhz... the fps goes from 27-28fps to 40fps this is 5k... Though quickly is limited by hotspot and dials back. These cards need way better cooling and more than 40fps 5k is possible stable.
The actual "Core Heatsink" should contact the VRM as well... That would fix this VRM temperature issue. It's difficult to control in the reference default configuration.
See how my voltage on the low end of the 12 volt rail went to 11.469 from 12.438? The PSU is highly efficient when under light load. However with every single capacitor actively cooled it can bring up that low from 11.496 to 11.680 to 11.875v... Saving hundreds really about 100 or more watts at the psu end with caps cooled same clocks, higher performance by 10-15fps. Could see even less loss if done inside the PSU as well to all caps with thermal glue. I need to get some thermal epoxy.
By the way see 1.275v? I once saw 1.438v vCore on 65288... So yeah it gets kinda squirrely when temps get high... 88C max temp/ 88C hotspot causes super high 65288 voltage.
The easiest way to reduce the total card power consumption is to just use 1 large thermal sheet and cover the entire card excluding the core.. cut a square out for the core for thermal paste... that way everything is cooled.. that's the expensive route.Edited by chris89 - 4/11/17 at 4:55am