Final Words

Traditionally dual-GPU cards have been a mixed bag. More often than not they have to sacrifice a significant amount of single-GPU performance in order to put two GPUs on a single card, and in the rare occasions where that tradeoff doesn’t happen there’s some other tradeoff such as a loud cooler or immense power consumption. NVIDIA told us that they could break this tradition and put two full GTX 680s on a single card, and that they could do that while making it quieter and less power consuming than a dual video card SLI setup. After going through our benchmarking process we can safely say that NVIDIA has met their goals.

From a gaming performance perspective we haven’t seen a dual-GPU card reach the performance of a pair of high-end cards in SLI/CF since the Radeon HD 4870X2 in 2008, so it’s quite refreshing to see someone get so close again 4 years later. The GTX 690 doesn’t quite reach the performance of the GTX 680 SLI, but it’s very, very close. Based on our benchmarks we’re looking at 95% of the performance of the GTX 680 SLI at 5760x1200 and 96% of the performance at 2560x1600. These are measurable differences, but only just. For all practical purposes the GTX 690 is a single card GTX 680 SLI – a single card GTX 680 SLI that consumes noticeably less power under load and is at least marginally quieter too.

With that said, this would typically be the part of the review where we would inject a well-placed recap of the potential downsides of multi-GPU technology; but in this case there’s really no need. Unlike the GTX 590 and unlike the GTX 295 NVIDIA is not making a performance tradeoff here compared to their single-GPU flagship card. When SLI works the GTX 690 is the fastest card out there, and when SLI doesn’t work the GTX 690 is still the fastest card out there. For the first time in a long time using a dual-GPU card doesn’t mean sacrificing single-GPU performance, and that’s a game changer.

At this point in time NVIDIA offers two different but compelling solutions for ultra-enthusiast performance; the GTX 690 and GTX 680 SLI, and they complement each other well. For most situations the GTX 690 is going to be the way to go thanks to its lower power consumption and lower noise levels, but for cases that need fully exhausting video cards the GTX 680 SLI can offer the same gaming performance at the same price. Unfortunately we’re going to have to put AMD out of the running here; as we’ve seen in games like Crysis and Metro the 7970 in Crossfire has a great deal of potential, but as it stands Crossfire is simply too broken overall to recommend.

The only real question I suppose is simply this: is the GTX 690 worthy of its $999 price tag? I don’t believe there’s any argument to be had with respect to whether the GTX 690 is worth getting over the GTX 680 SLI, as we’ve clearly answered that above. As a $999 card it doesn’t double the performance of the $499 GTX 680, but SLI has never offered quite that much of a performance boost. However at the same time SLI has almost always been good enough to justify the cost of another GPU if you must have performance better than what the fastest single GPU can provide, and this is one of those times.

Is $999 expensive? Absolutely. Is it worth it? If you’re gaming at 2560x1600 or 5760x1200, the GTX 690 is at least worth the consideration. You can certainly get by on less, but if you want 60fps or better and you want it with the same kind of ultra high quality single GPU cards can already deliver at 1920x1080, then you can’t do any better than the GTX 690.

Wrapping things up, there is one question left I feel like we still don’t have a good answer to: how much RAM a $999 card should have. NVIDIA went with a true equal for the GTX 680 SLI, right down to the 2GB of VRAM per GPU. Looking back at what happened to the Radeon HD 5970 and its 1GB of VRAM per GPU – we can’t even run our 5760x1200 benchmarks on it, let alone a couple of 2560x1600 benchmarks – I’m left uneasy. None of our benchmarks today seem to require more than 2GB of VRAM, but that much VRAM has been common in high-end cards since late 2010; the day will come when 2GB isn’t enough, and I'm left to wonder when. A GTX 690 with 4GB of VRAM per GPU would be practically future-proof, but with 2GB of VRAM NVIDIA is going to be cutting it close.

Overclocked: Gaming Performance
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  • chadwilson - Thursday, May 3, 2012 - link

    OpenCL by it's very nature is open, it is not an AMD API.
  • CeriseCogburn - Friday, May 4, 2012 - link

    Not after amd gets through with it.
  • silverblue - Friday, May 4, 2012 - link

    We'll see once somebody posts benchmarks of it.
  • CeriseCogburn - Friday, May 11, 2012 - link

    Excuse me but you're wrong, again.
    " by Ryan Smith on Thursday, May 10, 2012
    According to WinZip it only supports AMD GPUs, which is why we're not using it in NVIDIA reviews at this time. "
    Ryan's comment from the 670 release review.
  • chadwilson - Friday, May 4, 2012 - link

    You haven't bothered to do even the most basic research as to who owns OpenCL have you? Perhaps you should visit google before posting hyperbole
  • CeriseCogburn - Saturday, May 5, 2012 - link

    I'm sure the gamer's manifesto amd company "ownz it" now, and also certain it has immediately become all of yours favorite new benchmark you cannot wait to demand be shown here 100% of the time, it's so gaming evolved.
  • CeriseCogburn - Friday, May 11, 2012 - link

    Here's some research mt know it all: " by Ryan Smith on Thursday, May 10, 2012
    According to WinZip it only supports AMD GPUs, which is why we're not using it in NVIDIA reviews at this time. "
    --
    Congratulations on utter FAIL.
  • eman17j - Sunday, August 19, 2012 - link

    look at this website

    http://developer.nvidia(dot)com/cuda/opencl
  • prophet001 - Thursday, May 3, 2012 - link

    First off, thank you for this review. If you didn't do this, we'd have no idea how these GPUs perform in the wild. It is very nice to come here and read a graph and make educated decisions on which card we should purchase. It is appreciated.

    The one thing that I wanted to question is why you feel that you can't recommend the 7970. At the very least perhaps the recommendation of which card to get should be based on the game you're playing.

    Reviewing the data you published, the average frame rates for the 5 top performers over all bench marks are;

    680 SLI 119 fps
    690 GTX 116 fps
    7970 CF 103 fps
    680 GTX 72.9 fps
    7970 65.5 fps

    Also, the number of times which the 7970 dipped below 60 fps in the benchmarks (excluding the minimum frame rate benchmarks) alone, without the 680 doing the same was 4. This is over 29 benchmarks and some of the dips were minimal.

    This aligned with the price considerations makes me wonder why one wouldn't consider the 7970?
  • Ryan Smith - Thursday, May 3, 2012 - link

    "The one thing that I wanted to question is why you feel that you can't recommend the 7970. At the very least perhaps the recommendation of which card to get should be based on the game you're playing."

    Under normal circumstances we would do this. For example GTX 570 vs Raadeon HD 6970 last year; the two traded blows often enough that it came down to the game being played. However the key was that the two were always close.

    In 20% of our games, 7970CF performance is nowhere close to GTX 690 because CF is broken in those games. It would be one thing if AMD's CF scaling in those games was simply weaker, but instead we have no scaling and negative scaling in games that are 5+ months old.

    For single card setups AMD is still fine, but I cannot in good faith recommend CF when it's failing on major games like this. Because you never know what games in the future may end up having the same problem.

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