Comparisons of two mid-range (roughly) graphics cards with one high-end VGA are almost always good for some really interesting results. Today we're having a look at what two AMD Radeon R9 280X graphics cards can do against one NVIDIA GTX 780. The two R9 280X cards are quite a bit cheaper and we're really curious to find out which setup is going to be quicker.
First of all lets talk about prices. Let's consider that
the two R9 280X together cost 422 Euro. Compare that to the
389 Euro you'd have to pay for the cheapest reference NVIDIA GeForce GTX 780 we can
find. Therefore this one high-end card is is about 13 percent cheaper than the
two mid-range models.
To dive a bit deeper into the results, we start with performance differences in
3DMark graphics score where we see that the CrossFire of the two R9 280X is between 72 and 78 percent faster
than the NVIDIA GeForce GTX 780. In the next theoretical test we ran, Unigine Heaven,
we see that the two R9 280X's are on average 13 slower than the NVIDIA GTX 780.
In case of games it turns out that for example in Skyrim one the one NVIDIA card is about 6 percent quicker than the two cards in CrossFire. A
closer look at Call of Duty Black Ops 2 shows the other end of the scale, where
the two R9 280X's score 50 percent better than the single NVIDIA GeForce GTX 780. In this case we see a rather huge variance in the test results.
Overall the two R9 280X cards are performing really well and there is no doubt
the two of them are seriously quick, actually, on average they're 24.8 pecent quicker than one GTX 780. But the problem is that the average value is not even telling half the story. It turns out that in one of the games tested the games we tested the single card was quicker, then there are games where the difference is small and last but not least there are some titles where the two 280X cards are a lot faster. This in the end makes performance rather unpredictable. Other than that ther is power consumption. In idle the power consumption of our test system is 78 percent higher with the two R9 280X then with one GTX 780 and under load conditions the setup with two AMD cards can almost be used as a heating system, burning more than twice as much power. If you were to buy a new graphics cards for your system and your coming from a substantially slower environment having roughly 400 Euro at your disposal, we would, without a shadow of a doubt, recommend one high-end single GPU card. However, if you already own one R9 280X and you don't care about power consumption, then adding a second R9 280X to you system can boost performance in quite a few games substantially.
Comparisons of two mid-range (roughly) graphics cards with one high-end VGA are almost always good for some really interesting results. Today we're having a look at what two AMD Radeon R9 280X graphics cards can do against one NVIDIA GTX 780. The two R9 280X cards are quite a bit cheaper and we're really curious to find out which setup is going to be quicker. 
Article in English
Artikel in Deutsch
Article en français
Articolo in italiano
