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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  • TheJian - Friday, October 25, 2013 - link

    Incorrect. Part of the point of gsync is when you can do 200fps in a particular part of the game they can crank up detail and USE the power you have completely rather than making the whole game for say 60fps etc. Then when all kinds of crap is happening on screen (50 guys shooting each other etc) they can drop the graphics detail down some to keep things smooth. Gsync isn't JUST frame rate. You apparently didn't read the anandtech live blog eh? You get your cake and can eat it too (stutter free, no tearing, smooth and extra power used when you have it available). Reply
  • MADDER1 - Friday, October 25, 2013 - link

    If Gsync drops the detail to maintain fps like you said, then you're really not getting the detail you thought you set. How is that having your cake and eating it too? Reply
  • Cellar Door - Friday, October 25, 2013 - link

    How so? If Mantle gets 760gtx performance in BF4 from a 260X ..will you switch then? Reply
  • Animalosity - Sunday, October 27, 2013 - link

    No. You are sadly mistaken sir. Reply
  • Antiflash - Thursday, October 24, 2013 - link

    I've usually prefer Nvidia Cards, but they have it well deserved when decided to price GK110 to the stratosphere just "because they can" and had no competition. That's poor way to treat your customers and taking advantage of fanboys. Full implementation of Tesla and Fermi were always priced around $500. Pricing Keppler GK110 at $650+ was stupid. It's silicon after all, you should get more performance for the same price each year. Not more performance at a premium price as Nvidia tried to do this generation. AMD is not doing anything extraordinary here they are just not following nvidia price gouging practices and $550 is their GPU at historical market prices for their flagship GPU. We would not have been having this discussion if Nvidia had done the same with GK110. Reply
  • inighthawki - Thursday, October 24, 2013 - link

    " It's silicon after all, you should get more performance for the same price each year"

    So R&D costs come from where, exactly? Not sure why people always forget that there is actual R&D that goes into these types of products, it's not just some $5 just of plastic and silicon + some labor and manufacturing costs. Like when they break down phones and tablets and calculate costs they never account for this. As if their engineers are basically just selecting components on newegg and plugging them together.
    Reply
  • jecastejon - Thursday, October 24, 2013 - link

    R&D. Is R&D tied only to a specific Nvidia card? AMD as others also invest a lot in R&D with every product generation, even if they are not successful. Nvidia will have to do a reality cheek with their pricing and be loyal to their fans and the market. Today's advantages don't last for to long. Reply
  • Antiflash - Thursday, October 24, 2013 - link

    NVIDIA's logic. Kepler refresh: 30% more performance => 100% increase in price
    AMD's logic. GCN refresh: is 30% more preformance => 0% increase in price
    I can't see how this is justified by R&D of just a greedy company squishing its more loyal customer base.
    Reply
  • Antiflash - Thursday, October 24, 2013 - link

    Just for clarification. price comparison between cards at its introduction comparing NVIDIA's 680 vs Titan and AMD's 7970 vs 290x Reply
  • TheJian - Friday, October 25, 2013 - link

    AMD way=ZERO PROFITS company going broke, debt high, 6Bil losses in 10yrs
    NV way=500-800mil profits per year so you can keep your drivers working.

    Your love of AMD's pricing is dumb. They are broke. They have sold nearly everything they have or had, fabs, land, all that is left is the company itself and IP.

    AMD should have priced this card at $650 period. Also note, NV hasn't made as much money as 2007 for 6 years. They are not gouging you or they would make MORE than before in 2007 right? Intel, Apple, MS are gouging you as they all make more now than then (2007 was pretty much highs for a lot of companies, down since). People like you make me want to vomit as you just are KILLING AMD, which in turn will eventually cost me dearly buying NV cards as they will be the only ones with real power in the next few years. AMD already gave up the cpu race. How much longer you think they can fund the gpu race with no profits? 200mil owed to GF in Dec 31, so the meager profit they made last Q and any they might have made next Q is GONE. They won't make 200mil profit next Q...LOL. Thanks to people like you asking for LOW pricing and free games.

    You don't even understand you are ANTI-AMD...LOL. Your crap logic is killing them (and making NV get 300mil less profit than 2007). The war is hurting them both. I'd rather have AMD making 500mil and NV making 1B than what we get now AMD at ZERO and NV at 550mil.
    Reply

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