Hi there
Right guys, being stress testing this solution over-night and all day to day.
At stock speeds, voltage reduced too 1225mv (Stock is 1250mv) the card running Heaven maxed out, never exceeded 50c underload and was completely silent. That is a good 30-35c improvement with the MK26 cooler over stock.
Maximum overclock does not improve any further with silent fans, but you can match the max overclock, again keeping silent fans your looking at approx 85c under load, so about 5c improvement over the stock fan at 100% which is hoover loud.
However this is the real sweet spot guys for 24/7 gaming:-
Core: 1100Mhz
RAM: 6000MHz
Voltage: 1300mv
Power: +50
Fans: Silent
Heaven 3.0: Tesselation Extreme, 16x/8x AA/AF at 2560x1440
Maximum load temperature was 62c and in SILENCE.
The stock cooler could do this but with two dis-advantages, you'd be pushing 85c area and the fans would be at 75-100%, so you'd be hotter and much louder.
In short this is the perfect gaming setup, yet you could push the OC easily to 1150 / 6400, but in our view why? Keep the card 110% safe and cool whilst still absolutely beasting everything.
The MK26 works superb, nothing is melting, VRM's, memory is all fine.
Soon we shall test EK Blocks for those who wish to go water as that will be the ultimate solution and a 24/7 gaming could be no doubt done easily with 1200/6400 speeds.