Think I've got my reference Sapphire 8GB pushed as far as I can with stock BIOS limitations, but it's doing pretty good up to this point.
I've got an interesting combination of items for cooling so so far...started with a Kraken and some 120 AIOs, but BOTH of my extras croaked shortly after hooking them up.
So, I cut the radiator off of the TT 2.0 and am just using it as a waterblock. Plumbed it into my mini GPU loop and temps are pretty awesome on the core.
That's an Enzotech MST-66 that I just plopped onto the back of the VRMs initially...the sink got surprisingly hot for having no pressure applied aside from gravity.
The mini loop: XSPC EX240, (2) SilenX Effizio Thermistor Fans, XSPC X20 420 mini res/pump, with minimalist 1/4" ID tubing. These fans are so quiet you can hear a cricket fart
Mini Loop (Click to show)
VRMs were fine for benching, but playing Doom they were after only a few minutes of gaming; Easily exceeding 100C with the fronts of the VRMs bare.
Out came the dremel/drill to make a heatsink
VRM Sink Fabrication (Click to show)
XSPC Bay Res Face Plate
With Fujipoly Ultra Thermal Pads
Some rubber grommets w/ nuts inside...also happen to be from XSPC Bay Res
Enzotech BCC9 Pure Copper RAM Sinks
Add in a Corsair SP120 for good measure and 7V resistor to keep the sound down
Last I tested was with Doom last night at 1400/2250 1.15V core, stock VRAM volts, +50% power. Here's the 90 minutes of average figures from GPU-Z
And some data after ~30 min of Valley looping
Stock blower got me to 1350/2250 with stock voltage and 50% power.
Upgrading to water moved me up to 1400/2250 with 1.15V core and 50% Power
Adding the VRM heatsink squeezed the last 10MHz to 1410/2250 with 1.15V core/VRAM with 50% power. The VRM cooling also added, what appears to be, rock solid stability at 1400/2250...just need to retest in Doom with that last 10MHz.
4596 Time Spy (Click to show)
Patiently waiting for that XSPC Blade block to be available. I feel since my homebrew VRM heatsink got an extra 10MHz, that the waterblock can probably eek out a little more before exceeding factory voltage/power limits with a BIOS flash...time will tell.
Super happy with the results so far
What doesn't make sense to me is how the reviews so far for the AIB cards are running less than, or equal to, what I've seen most people getting with the reference cooler. Are the AIBs not allowing additional voltage past the reference 1.15V?
Edited by Roboyto - 7/26/16 at 10:00pm