Synthetics

As always we’ll also take a quick look at synthetic performance. The 290X shouldn’t pack any great surprises here since it’s still GCN, and as such bound to the same general rules for efficiency, but we do have the additional geometry processors and additional ROPs to occupy our attention.

Right off the bat then, the TessMark results are something of a head scratcher. Whereas NVIDIA’s performance here has consistently scaled well with the number of SMXes, AMD’s seeing minimal scaling from those additional geometry processors on Hawaii/290X. Clearly Tessmark is striking another bottleneck on 290X beyond simple geometry throughput, though it’s not absolutely clear what that bottleneck is.

This is a tessellation-heavy benchmark as opposed to a simple massive geometry bencehmark, so we may be seeing a tessellation bottleneck rather than a geometry bottleneck, as tessellation requires its own set of heavy lifting to generate the necessary control points. The 12% performance gain is much closer to the 11% memory bandwidth gain than anything else, so it may be that the 280X and 290X are having to go off-chip to store tessellation data (we are after all using a rather extreme factor), in which case it’s a memory bandwidth bottleneck. Real world geometry performance will undoubtedly be better than this – thankfully for AMD this is the pathological tessellation case – but it does serve of a reminder of how much more tessellation performance NVIDIA is able to wring out of Kepler. Though the nearly 8x increase in tessellation performance since 5870 shows that AMD has at least gone a long way in 4 years, and considering the performance in our tessellation enabled games AMD doesn’t seem to be hurting for tessellation performance in the real world right now.

Moving on, we have our 3DMark Vantage texture and pixel fillrate tests, which present our cards with massive amounts of texturing and color blending work. These aren’t results we suggest comparing across different vendors, but they’re good for tracking improvements and changes within a single product family.

Looking first at texturing performance, we can see that texturing performance is essentially scaling 1:1 with what the theoretical numbers say it should. 36% better texturing performance over 280X is exactly in line with the increased number of texture units versus 280X, at the very least proving that 290X isn’t having any trouble feeding the increased number of texture units in this scenario.

Meanwhile for our pixel fill rates the results are a bit more in the middle, reflecting the fact that this test is a mix of ROP bottlenecking and memory bandwidth bottlenecking. Remember, AMD doubled the ROPs versus 280X, but only gave it 11% more memory bandwidth. As a result the ROPs’ ability to perform is going to depend in part on how well color compression works and what can be recycled in the L2 cache, as anything else means a trip to the VRAM and running into those lesser memory bandwidth gains. Though the 290X does get something of a secondary benefit here, which is that unlike the 280X it doesn’t have to go through a memory crossbar and any inefficiencies/overhead it may add, since the number of ROPs and memory controllers is perfectly aligned on Hawaii.

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  • 46andtool - Thursday, October 24, 2013 - link

    I dont know where your getting your information but your obviously nvidia biased because its all wrong. AMD is known for using poor reference coolers, once manufactures like sapphire and HIS roll out there cards in a couple weeks Im sure the noise and heat wont be a problem. and the 780ti is poised to be between a 780gtx and a titan, it will not be faster than a 290x, sorry. We already have the 780ti's specs..what Nvidia needs to focus on is dropping its insane pricing. Reply
  • SolMiester - Monday, October 28, 2013 - link

    Sorry bud, but the Ti will be much faster than Titan, otherwise there is no point, hell even the 780OC is enough to edge the Titan. Why are people going on about Titan, its a once in a blue moon product to fill a void that AMD left open with CUDA dev for prosumers...Full monty with perhaps 7ghz memory, wahey! Reply
  • Samus - Friday, October 25, 2013 - link

    What in the world makes you think the 780Ti will be faster than Titan? That's ridiculous. What's next, a statement that the 760Ti will be faster than the 770? Reply
  • TheJian - Friday, October 25, 2013 - link

    http://www.techradar.com/us/news/computing-compone...
    Another shader and more mhz.
    http://news.softpedia.com/news/NVIDIA-GeForce-GTX-...
    If the specs are true quite a few sites think it will be faster than titan.
    http://hexus.net/tech/news/graphics/61445-nvidia-g...
    Check the table. 780TI would win in gflops if leak is true. The extra 80mhz+1SMX mean it should either tie or barely beat it in nearly everything.

    Even a tie at $650 would be quite awesome at less watts/heat/noise possibly. Of course it will be beat a week later buy a fully unlocked titan ultra or more mhz, or mhz+fully unlocked. NV won't just drop titan. They will make a better one easily. It's not like NV just sat on their butts for the last 8 months. It's comic anyone thinks AMD has won. OK, for a few weeks tops (and not really even now other than price looking at 1080p and the games I mentioned previously).
    Reply
  • ShieTar - Thursday, October 24, 2013 - link

    It doesn't cost less than a GTX780, it only has a lower MSRP. The actual price for which you can buy a GTX780 is already below 549$ today, so as usual you pay the same price for the same performance with both companies.

    And testing 4K gaming is important right now, but it should be another 3-5 years before 4K performance actually impacts sales figures in any relevant way.

    And about Titan? Keep in mind that it is 8 months old, still has one SMX disabled (unlike the Quadro K6000), and still uses less power in games than the 290X. So I wouldn't be surprised to see a Titan+ come out soon, with 15 SMX and higher base clocks, and as Ryan puts it in this article "building a refined GPU against a much more mature 28nm process". That should be enough to gain 10%-15% performance in anything restricted by computing power, thus showing a much more clear lead over the 290X.

    The only games that the 290X will clearly win are those that are restricted by memory bandwidth. But nVidia have proven with the 770 that they can operate memory at 7GHz as well, so they can increase Titans bandwidth by 16% through clocks alone.

    Don't get me wrong, the 290X looks like a very nice card, with a very good price to it. I just don't think nVidia has any reason to worry, this is just competition as usual, AMD have made their move, nVidia will follow.
    Reply
  • Drumsticks - Thursday, October 24, 2013 - link

    http://www.newegg.com/Product/ProductList.aspx?Sub...

    Searched on Newegg, sorted by lowest price, lowest one was surprise! $650. I don't think Newegg is over $100 off in their pricing with competitors.
    Reply
  • 46andtool - Thursday, October 24, 2013 - link

    http://www.newegg.com/Product/Product.aspx?Item=N8...

    your clearly horrible at searching
    Reply
  • TheJian - Friday, October 25, 2013 - link

    $580 isn't $550 though right? And out of stock. I wonder how many of these they can actually make seeing how hot it is already in every review pegged 94c. Nobody was able to OC it past 1125. They're clearly pushing this thing a lot already. Reply
  • ShieTar - Friday, October 25, 2013 - link

    Well, color me surprised. I admittedly didn't check the US market, because for more than a decade now, electronics used to be sold in the Euro-Region with a price conversion assumption of 1€=1$, so everything was about 35% more expensive over here (but including 19% VAT of course).

    So for this discussion I used our German comparison engines. Both the GTX780 and the R290X are sold for the same price of just over 500€ over here, which is basically 560$+19%VAT. I figured the same price policies would apply in the US, it basically always does.

    Well, as international shipping is rarely more that 15$, it would seem like your cheapest way to get a 780 right now is to actually import it from Germany. Its always been the other way around with electronics, interesting to see it the other way around for once.
    Reply
  • 46andtool - Thursday, October 24, 2013 - link

    the price of a 780gtx is not below $649 unless you are talking about a refurbished or open box card. Reply

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