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GTX 1080 EVGA SC Overclocking

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28 Sep 2009
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86
How has Overclocking been for many of you with the GTX 1080 EVGA SC?

So far managed 2030 stable GPU clock. First time Overclocking and would like to share and learn.
 
the 1080 overclocks for ****, EVGA SC ACX review at hardwarecanucks
So what does this mean for EVGA’s card? Its core speed edged out our Founders Edition sample by a slim margin but memory speeds fell a bit short. Once again a limited amount of voltage input (even with EVGA’s awesome per-point voltage increases) completely put a damper on overclocking. Now granted a 300MHz increase core speed increase and memory running in excess of 11Gbps is nothing to sneeze at but there’s obviously much more left in the tank especially when you consider the insanely low temperatures.
 
Most 1080 seem to get over 2GHz quite handily but going beyond that seems complex at this time due to some sophisticated power limitations. Hopefully some custom BIOs in the future to really let the cards stretch. They've been hitting 2.8GHZ on LN2.

Also some talk that the EVGA classified will be clocked to 2.2GHZ
 
So I've precision x set to 120% power target, GPU temp target is 79, GPU offset to +100, memory offset is +350. Voltage is automatic and I can't change that with precision x 16. Nor can I activate K boost. I think that's because of my monitor o read? Also I save the profiles and when I restart they are all completely different settings!! My default boost ive seen goes to 1930mhz

Running heaven and the fans go to 2300rpm average

Idle temp is 40oc
 
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I also got a pair. I must admit I'm not very impressed with EVGA GTX 1080 SC ACX 3.0 after getting them, sure they are faster than the 2x GTX 980 they replaced, but the overclocking headroom really sucks :( max I can do on the core is +68MHz on and it doesn't matter if I set voltage to +50mv, +60mv, +75mv or +100mv with the powerlimit to 120% and temperature target at 85c - as soon as I run +70MHz 3Dmark provokes a driver not responding error. Heaven 4.0 is stable up to +85MHz though....

So right now I'm running +68MHz GPU, +500MHz Vram, +70mv Voltage, Powerlimit 120%, temperature target 85. This appears stable in everything I've tried.

The boost clock varies between 1986~2038MHz depending on game.

I think EVGA really set af high temperature threshold before the fans kick in - first at 63 degrees celcius they start spinning slowly and at 71 degrees celcius they only spin with 21% fanspeed, but at 75 degrees celcius they ramp up to 49%.
 
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It does appear the FE's seem to be overclocking better at the moment. The 1080GTX is very temperature sensitive. Maybe change the fan profile
 
It does appear the FE's seem to be overclocking better at the moment. The 1080GTX is very temperature sensitive. Maybe change the fan profile

Doesn't matter mine never goes above 60c and it maxes at 2088 boost.

Once u start getting drivers not responding this the limit
 
Tempretures favour aftermarket simply by virtue of one being a blower style.

Long story short, overclocks on the models released to date, performance wise are down to the silicon lottry then number of power phases / beefed up pcb's etc. However benefit for the aftermarket is there coolers will be able to run cooler / quieter. Not to say founders is loud, they have vastly improved the noise from Titan x ref design. But will still be louder then aftermarket cards.
 
Both my FE are stable and solid at 2100mhz and +500 on the memory. On their own they are at about 2130mhz.

Both cards luckily for me are very close to each other on stock boost. Both boost to 1911mhz by themselves and allow me to put down a further +190mhz to give 2101.

I think there may have been some truth with FE cards being of better binned quality.
 
Did u check with multimeter voltages?? U should. The volts are locked in the driver/ gpu core to 1.25v max.

I tried some 1080FE varying oc on same design. Silicon lottery.
 
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