NVIDIA GeForce GTX 1070 Founders Edition Preview

The second video card in the NVIDIA next generation Pascal GPU architecture is finally here, we will explore the GeForce GTX 1070 Founders Edition video card. In this limited preview today we will look at performance in comparison to GeForce GTX 980 Ti and Radeon R9 Fury X as well as some preview overclocking.


Overclocking Preview

We haven't had a tremendous amount of time with the GeForce GTX 1070 Founders Edition yet, but we wanted to squeeze in some preliminary overclock preview testing for you all in this preview. We experienced positive results overclocking the GeForce GTX 1080 Founders Edition once the fan was tuned to a loud 100%. We managed to overclock that video card on average about 264MHz over its average in-game frequency of 1770MHz. It overclocked to an average of 2034MHz.

We now want to compare what the GeForce GTX 1070 Founders Edition can do. NVIDIA quoted a clock frequency of at least 1.9GHz obtainable on the GeForce GTX 1070 Founders Edition. We know the base clock is 1506MHz, and the boost clock is 1683MHz. Thanks to our clock speed testing over time we learned that the average in-game clock speed is actually around 1756MHz. This is actually pretty close to what the GeForce GTX 1080 Founders Edition runs at 1770MHz average while gaming.

Something to keep in mind is that with less transistors, or CUDA Cores, or multiprocessing units disabled etc. comes the potential for greater or higher clock speeds. Think of it this way, the more junk you pack on, the harder it is to clock all of that junk at the same clock speed at high clock frequencies. However, if you use less junk and have more room for things, and less potential for weak links in the chain, then your potential for higher clock speeds grows as well. It is not unusually to see lower-end GPUs clocking much higher.

Fan at 100% - Power Target at 112% ONLY

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Before we begin to overclock by pushing the GPU Offset upward, we first wanted to find out what would happen if we just only turned up the fan speed to 100% and maxed out the power target. We left the GPU Offset alone for this test. The power target goes from 100% to 112% on this video card, not much. We wanted to see if we could get the clock speed to maintain a higher consistent clock speed than we did on page 3. Remember on page 3 we saw some clock speed dip below the GPU Boost speed of 1683MHz.

Ok, with the fan at 100% and power target at 112% this completely solves the problem we found on page 3. The clock speed is now completely 100% above the GPU Boost clock of 1683MHz. It goes as high as 1885MHz, but sustains around an average of 1837MHz. It hits 1721MHz minimum. This is very positive without even overclocking anything. Just by turning the fan speed and power target up the clock speed goes from an average of 1756MHz to 1837MHz giving you more performance with those two simple tweaks not even touching GPU Offset.

Final Overclocking

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Combining everything, fan speed at 100%, power target at 112%, and GPU Offset overclocking at +230 this is what we got. This is the highest stable overclock for 30 minutes of gaming so far, no crashes. We need to test longer, but so far, this is looking good.

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Here is the clock speed this generates. We have added a new colored line, a blue line. This blue line represnets the quoted by NVIDIA 1.9GHz for overclocking potential. What you see here is that the overclocked clock speed is not only way higher than the default GPU Boost green line, but also a lot higher than the NVIDIA quoted 1.9GHz overclocking potential.

The GPU reached a maximum of 2113MHz, but could not sustain that. However, it can sustain around a 2076MHz. The actual average over this time was 2052MHz for 15 minutes of gaming. At 2052MHz the clock frequency is higher than we were able to get out of the GeForce GTX 1080 Founders Edition by about 20MHz. This bodes very well!

One thing to keep in mind here, this is just the GPU overclock. We have not tried to overclock memory yet. Once we overclock memory it may cause the GPU overclock to go down as the memory saps more power away from the GPU. Therefore, the combined GPU + Memory overclock will have to wait till we see what this 8GHz GDDR5 can do. However, GPU alone at 2052-2076MHz is very impressive for increasing the potential of the GeForce GTX 1070 FE well past GTX 980 Ti performance and possibly TITAN X performance.

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Here is the temp with 100% fan speed and this overclock. You can see temperature isn't a problem with 100% fan speed, temps barely go above 60c.

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If you are wondering how performance compares, this shows the performance benefit overclocking only the GPU. You can see performance has increased by 13% from overclocking. It brings performance up much closer to the GeForce GTX 1080 Founders Edition, and that's just the GPU overclock, not memory. This gives us hope that overclocking will propel performance well past TITAN X at default.

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