Conclusion
First of all lets talk about prices. Let's consider that
the two GTX 760 DirectCU II OC together cost 418 Euro. Compare that to the
433 Euro you'd have to pay for the cheapest reference GTX 780 we can find.
Therefore the GTX 780 is about 15 Euro more expensive than the two smaller ASUS
custom cards.
To dive a bit deeper into the results, we start with performance differences in
3DMark where we see that the SLI of two GTX 760 is a whopping 33 percent faster
than the GTX 780. In the next theoretical test we ran, Unigine Heaven,
we see that the two 760's are on average 21 percent quicker than the GTX 780.
In case of games, the range goes from 4 percent in The Elder Scrolls: Skyrim to
49 percent difference in Call of Duty: Black Ops 2, which in other words means,
that it goes from nothing to a massive improvement. One drawback of the two small cards
certainly is the fact, they only feature 2 Gigabyte of GDDR5 memory and the GTX
780 comes with 3 Gigabyte. Especially at ultra high resolutions
this is going to be an advantage for the GTX 780, since the two GTX 760 will run
out of graphics memory quite soon, when trying to keep boatloads of large
textures in the memory. But luckily there are 4 Gigabyte versions of the GTX
760, which cost about 20 Euro more than the 2 Gigabyte cards, which in total is
an additional 40 Euro to the 418 Euro we mentioned at the beginning of this
conclusion.
Overall the two GTX 760 cards are performing really well and there is no doubt
the two of them are seriously quick. But in case of the particular models we tested, the graphics memory is
too small for the performance delivered, there will be the usual SLI issues,
although NVIDIA is taking quite good care of that and last but no least there is
the power consumption which is 58 percent higher than with one single GTX 780.
If you're actually thinking
about buying two GTX 760's make sure you go for models with 4 Gigabyte VRAM
otherwise the performance advantage compared to the GTX 780
Ti will shrink drastically when playing games at ultra high resolutions. When it
come to price/performance, than the two GTX 760 in SLI are simply great. Since
drives are meanwhile quite well optimized for SLI, almost any new game is
supported with well balanced profiles.