Part of my extra-curricular testing post Computex this year put me in the hands of a Sharp 4K30 monitor for three days and with a variety of AMD and NVIDIA GPUs on an overclocked Haswell system.  With my test-bed SSD at hand and limited time, I was able to test my normal motherboard gaming benchmark suite at this crazy resolution (3840x2160) for several GPU combinations.  Many thanks to GIGABYTE for this brief but eye-opening opportunity.

The test setup is as follows:

Intel Core i7-4770K @ 4.2 GHz, High Performance Mode
Corsair Vengeance Pro 2x8GB DDR3-2800 11-14-14
GIGABYTE Z87X-OC Force (PLX 8747 enabled)
2x GIGABYTE 1200W PSU
Windows 7 64-bit SP1
Drivers: GeForce 320.18 WHQL / Catalyst 13.6 Beta

GPUs:

NVIDIA
GPU Model Cores / SPs MHz Memory Size MHz Memory Bus
GTX Titan GV-NTITAN-6GD-B 2688 837 6 GB 1500 384-bit
GTX 690 GV-N690D5-4GD-B 2x1536 915 2 x 2GB 1500 2x256-bit
GTX 680 GV-N680D5-2GD-B 1536 1006 2 GB 1500 256-bit
GTX 660 Ti GV-N66TOC-2GD 1344 1032 2 GB 1500 192-bit
AMD
GPU Model Cores / SPs MHz Memory Size MHz Memory Bus
HD 7990 GV-R799D5-6GD-B 2x2048 950 2 x 3GB 1500 2x384-bit
HD 7950 GV-R795WF3-3GD 1792 900 3GB 1250 384-bit
HD 7790 GV-R779OC-2GD 896 1075 2GB 1500 128-bit

For some of these GPUs we had several of the same model at hand to test.  As a result, we tested from one GTX Titan to four, 1x GTX 690, 1x and 2x GTX 680, 1x 660Ti, 1x 7990, 1x and 3x 7950, and 1x 7790.  There were several more groups of GPUs available, but alas we did not have time.  Also for the time being we are not doing any GPU analysis on many multi-AMD setups, which we know can have issues – as I have not got to grips with FCAT personally I thought it would be more beneficial to run numbers over learning new testing procedures.

Games:

As I only had my motherboard gaming tests available and little time to download fresh ones (you would be surprised at how slow in general Taiwan internet can be, especially during working hours), we have a standard array of Metro 2033, Dirt 3 and Sleeping Dogs.  Each one was run at 3840x2160 and maximum settings in our standard Gaming CPU procedures (maximum settings as the benchmark GUI allows).

Metro 2033, Max Settings, 3840x2160:

Metro 2033, 3840x2160, Max Settings

Straight off the bat is a bit of a shocker – to get 60 FPS we need FOUR Titans.  Three 7950s performed at 40 FPS, though there was plenty of microstutter visible during the run.  For both the low end cards, the 7790 and 660 Ti, the full quality textures did not seem to load properly.

Dirt 3, Max Settings, 3840x2160:

Dirt 3, 3840x2160, Max Settings

Dirt is a title that loves MHz and GPU power, and due to the engine is quite happy to run around 60 FPS on a single Titan.  Understandably this means that for almost every other card you need at least two GPUs to hit this number, more so if you have the opportunity to run 4K in 3D.

Sleeping Dogs, Max Settings, 3840x2160:

Sleeping Dogs, 3840x2160, Max Settings

Similarly to Metro, Sleeping Dogs (with full SSAA) can bring graphics cards down to their knees.  Interestingly during the benchmark some of the scenes that ran well were counterbalanced by the indoor manor scene which could run slower than 2 FPS on the more mid-range cards.  In order to feel a full 60 FPS average with max SSAA, we are looking at a quad-SLI setup with GTX Titans.

Conclusion:

First of all, the minute you experience 4K with appropriate content it is worth a long double take.  With a native 4K screen and a decent frame rate, it looks stunning.  Although you have to sit further back to take it all in, it is fun to get up close and see just how good the image can be.  The only downside with my testing (apart from some of the low frame rates) is when the realisation that you are at 30 Hz kicks in.  The visual tearing of Dirt3 during high speed parts was hard to miss.

But the newer the game, and the more elaborate you wish to be with the advanced settings, then 4K is going to require horsepower and plenty of it.  Once 4K monitors hit a nice price point for 60 Hz panels (sub $1500), the gamers that like to splash out on their graphics cards will start jumping on the 4K screens.  I mention 60 Hz because the 30 Hz panel we were able to test on looked fairly poor in the high FPS Dirt3 scenarios, with clear tearing on the ground as the car raced through the scene.  Currently users in North America can get the Seiki 50” 4K30 monitor for around $1500, and they recently announced a 39” 4K30 monitor for around $700.  ASUS are releasing their 4K60 31.5” monitor later this year for around $3800 which might bring about the start of the resolution revolution, at least for the high-end prosumer space.

All I want to predict at this point is that driving screen resolutions up will have to cause a sharp increase in graphics card performance, as well as multi-card driver compatibility.  No matter the resolution, enthusiasts will want to run their games with all the eye candy, even if it takes three or four GTX Titans to get there.  For the rest of us right now on our one or two mid-to-high end GPUs, we might have to wait 2-3 years for the prices of the monitors to come down and the power of mid-range GPUs to go up.  These are exciting times, and we have not even touched what might happen in multiplayer.  The next question is the console placement – gaming at 4K would be severely restrictive when using the equivalent of a single 7850 on a Jaguar core, even if it does have a high memory bandwidth.  Roll on Playstation 5 and Xbox Two (Four?), when 4K TVs in the home might actually be a thing by 2023.

16:9 4K Comparison image from Wikipedia

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  • nakquada - Monday, July 01, 2013 - link

    Why on earth would you want to cripple your framerate by using any form of SuperSampling/Anti-aliasing at that resolution? Reply
  • aetherzero - Monday, July 01, 2013 - link

    This is an excellent question. Aren't the point of these rendering features to eliminate artifacts that are a result of the pixellation and line breaking at lower resolutions? Shouldn't these artifacts should be inherently eliminated by the higher resolution? Reply
  • xTRICKYxx - Monday, July 01, 2013 - link

    Apparently, antialiasing still has a place at 4K because aliasing is still visible at that PPI. I Reply
  • smartypnt4 - Monday, July 01, 2013 - link

    You need some AA at any resolution for a game to look its best. There are patterns that the human eye can pick out relatively easily that are still present on high-PPI/DPI montiors.

    Example: go take a look at Galaxy on Fire 2 running on the iPad 4. I know for a fact it runs at native resolution, but there are times when you notice aliasing going on, or at the very least some weird jagged edges, especially when looking at a ship against the black background of space.

    That said, SSAA is COMPLETELY unnecessary for this resolution. It'd be nice to get some analysis of what kind of settings we can expect out of games for the near-ish future at 4K. That's dependent on getting one of the reviewers a 4K TV to test on, which should be easy with those Seiki sets available.
    Reply
  • IanCutress - Monday, July 01, 2013 - link

    I'd love one for testing, though shipping to the UK is a problem and I don't have space for a 50". Shame they don't sell local. Reply
  • smartypnt4 - Monday, July 01, 2013 - link

    That's true. I keep forgetting you're on the other side of the pond. I'm sure a solution will present itself, though. It's not like anyone really needs these in the next 6 months or so. Reply
  • mapesdhs - Tuesday, July 02, 2013 - link


    Ian, just a thought, given the level of GPU power we're talking about here, and what future
    displays might require, perhaps European power outlets will just about to be able to cope
    given their 3kW+ typical limit, but what about US power outlets? Despite the inevitable
    advances in lower voltage GPUs, etc., is it possible we'll see ever more heat & power
    problems in the future at the top-end of PC gaming? Even if it's not bad enough to be
    a problem at the wall socket (at least not for Europeans), what about venting the heat
    from out of a case? Makes me wonder whether the ATX standard itself is out of date;
    perhaps it needs to move up a size level.

    Btw, whereabouts are you in the UK?

    Ian.
    Reply
  • HSR47 - Saturday, January 25, 2014 - link

    "Shouldn't these artifacts should be inherently eliminated by the higher resolution?"

    Not really, no.

    The issue is that you're trying to render three dimensional objects on a two dimensional plane: that means that things get stretched and contorted. Also, these features are useful for blurring the edges between different rendered objects.
    Reply
  • r3loaded - Monday, July 01, 2013 - link

    That's what I was wondering too. At such a high resolution and a high enough pixel pitch, any form of anti-aliasing is just pointless. 2x SSAA is practically equivalent to running the cards at 8K, a resolution which is still a decade or two away from being seen outside the lab. Reply
  • nathanddrews - Monday, July 01, 2013 - link

    While we might have to wait a little longer in the USA, NHK Japan is on track to begin 8K (Super Hi-Vision) satellite broadcasts in 2016. The codec and compression methods have been finalized, commercial equipment is being prepared for launch... 8K will be here sooner than you think. I never would have thought we'd have 4K TV/monitors for $699 already, but we do.

    I've said it before, but GPU makers really need to get on the ball quick. Hopefully mainstream Volta and Pirates will be up to the task...
    Reply

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