Gaming Performance

Since this is our first experience with Kepler, we ran the GeForce GT 640M through its paces at each of our presets despite the internal panel of the Acer TimelineU M3 only running at 1366x768. In the process we ran into a bug with Battlefield 3, though, where that game would crash every time we tried to change video settings in-game with a secondary screen connected. As a result we only have Battlefield 3 results at our "Value" preset.

Unfortunately we're also pretty shy on results of notebooks using our current gaming benchmarks, so for now these charts are going to feel a little spare. Thankfully, the most interesting comparison (that between the GTX 560M and the GT 640M) is something we can definitely provide.

Batman: Arkham City - Value

Battlefield 3 - Value

Civilization V - Value

DiRT 3 - Value

Elder Scrolls: Skyrim - Value

Portal 2 - Value

Total War: Shogun 2 - Value

The 640M produces reasonable performance in each game. Given how it's tough to gauge just what clocks the 640M is running at and how little we can reveal about what we know of Kepler, it's difficult to pinpoint exactly what the bottleneck might be. It's entirely possible that at the Value preset is CPU-limited between the ASUS and Acer, while the 6650M in the Sony Vaio Z2 is likely bandwidth limited due to being used on a Thunderbolt connection and thus reduced to PCIe x4 speeds.

Batman: Arkham City - Mainstream

Civilization V - Mainstream

DiRT 3 - Mainstream

Elder Scrolls: Skyrim - Mainstream

Portal 2 - Mainstream

Total War: Shogun 2 - Mainstream

I'll take it as a point of pride that NVIDIA uses almost all of our benchmarks in their reviewer's guide, but what's interesting is that all of our results here are actually a touch higher than what we were told to expect. At 1600x900 the GT 640M is undoubtedly feeling the pinch from the 128-bit DDR3 memory bus, but it still holds its own. This is about the highest resolution you could conceivably want to run this GPU at, at least without GDDR5 (which the 640M does support).

Batman: Arkham City - Enthusiast

Civilization V - Enthusiast

DiRT 3 - Enthusiast

Portal 2 - Enthusiast

Total War: Shogun 2 - Enthusiast

I've never seen a GPU with a 128-bit memory bus and DDR3 memory acquit itself particularly well at 1080p, and NVIDIA isn't about to change that with the GT 640M in the Acer TimelineU. At this point the chip's limited memory bandwidth is just plain overwhelmed and can't keep up, shader power be damned.

With all that information now on the table, it's reasonable to say the GT 640M is definitely a powerful GPU and certainly a step forward from the Fermi-based GT 540M. At 768p, even a DDR3-equipped 640M is undoubtedly going to provide the excellent gaming experience that NVIDIA promises, but anywhere beyond that is still going to require more memory bandwidth, full stop. There's only so much one can do with the die before having to make that concession, and I feel like the 640M needs GDDR5 to really shine.

Application and Futuremark Performance Battery, Heat, and Screen Performance
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  • Exchequer - Wednesday, March 14, 2012 - link

    It is clear you are NOT a gamer... I hace combined my gamign rig intentionally with a 1680x1050 screen, why? Because it MATTERS for your framerate.

    1024x768=768k
    1280x1024=1.2M
    1680x1050=1.76M
    1920x1080=2M
    1366x768=1M

    Your talking about is 5M

    That is pure madnes... Even if you go from 1M pixels to 2M pixels, this mean your framerate will drop down 50%... E.g. if you had 50 fps before it will end up near 25 fps. To talk about 5M pixels means you really have absolutely no clue about gpu's and games...

    Of course you can lower the resolution of your game but, as anyone that ever tried this will know, if you move away from the native resolution screens become very ugly. Your better off playing native on a lower resolution than picking this resolution on a higher res panel.
    Reply
  • kmmatney - Wednesday, March 14, 2012 - link

    When you have pixels that small, things actually scale quite well, so going to a lower resolution for a game is no big deal.

    I agree that a 1680 x 1050 screen is great for mainstream gaming - it's a good compromise between having a nice big screen, and not too many pixels to push.
    Reply
  • airmantharp - Wednesday, March 14, 2012 - link

    Did you seriously just say 1680x1050 for gaming?

    That's great, if you can't afford a video card, and I'm aware that not everyone can.

    But let me tell you, gaming on a 30" 2560x1600 IPS screen is something to behold. Battlefield 3, Skyrim, Mass Effect 3, The Old Republic, all look and play amazing when driven by a pair of HD6950 2GB cards.
    Reply
  • Exchequer - Saturday, March 17, 2012 - link

    First of all we are talking here about mobile gaming... Even if you get an insanely expensive laptop with sli/crossfire you still wont have enough fps for a 30 inch screen with that resolution...

    Furthermore crossfire results in microstutter so thats not an ideal solution, it pretty much ruins the game.

    On pc gaming I once bought an 8800 GTS 640mb for 320 euro when it was just released (probablyt wrong priced should be 450 euro), 6 months later the 8800GT was introduced at half price. Since then I learned my lesson and got the gtx 260 for 140 euro (and got 90 back for the 8800gts), after that a gtx460 hawk for 165 euro. If you stick with your 1680x1050 panel you can run all games with AA without any problems for at least a year for about 50-60 (because each time you get 90-100 back for your old card). If I want to play bf3 on 1920x1080 I have to upgrade to a 560ti which would cost me 220 euro while resulting in the same detail settings and fps...
    Reply
  • Bols - Thursday, March 15, 2012 - link

    But you are so very wrong (and angry), young padwan.

    The beauty of a 2880x1800 screen is that it scales perfectly down to 1440x900, which would allow it to be driven by a mid-class GPU for fast FPS-games, and you will not be able to see that there is any scaling going on. (There isn't - every pixel in the 1400-domain is just shown as four pixels). For serious use, you can cram in four times more information and text in the 2800-resolution. If you working with text, like programming, screen estate matters.

    And you should ease up on the assumptions. I am an ex-fps-junkie, but I still care about framerate.
    Reply
  • Finraziel - Thursday, March 15, 2012 - link

    Double the pixels is half the framerate? Right, and there we stop taking you seriously... You read Anandtech yet you don't know there are lots of different possible bottlenecks and they are not all affected by resolution?
    Aside from that I agree, scaling isn't nearly as bad as people make it out to be on a proper high resolution screen. I've regularly done it both on laptops and on my 24" 1920x1200 display and if you can live with lower res I don't see how you can be so picky to whine about a bit of blurring from the scaling. Maybe if you play text-heavy games, but those tend to be less sensitive to framerate, so it works out nicely.
    Reply
  • Exchequer - Saturday, March 17, 2012 - link

    It is... I have an old Philips 17 inch TFT (25ms from 2003 so 9 years old!) as secondary monitor with 1280x1024. My main monitor is a samsung 2253BW (2008, 2ms), which is regarded as a high quality monitor. If I put the 2253BW on 1280x1024 (including black bars) you get about the same screen surface. The 17 inch is 27 cm height and the 22inch is 30cm. However the image quality is a LOT worse. If all you can run is 1280x1024 (gpu limited) than you are 100% better off with the old 17inch 5:4 panel as compared to downscaling the modern 22inch panel.

    Besides gaming it is of course personal preference. Back in the day you could get a 1680x1050 22 inch or a 1680x1050 20 inch, or a higher resolution 22 inch. However this results in very small text on your OS forcing you to use larger icons which (in the old days) were not as pretty ^^. Small icons get annoying pretty quickly. Anyone that has been wearing contact lenses for some years will know what im talking about:D.
    Reply
  • Exchequer - Saturday, March 17, 2012 - link

    "Double the pixels is half the framerate? Right, and there we stop taking you seriously...´`

    Maybe you should not only visit anandtech but also take a look at techpowerup...

    http://www.techpowerup.com/reviews/Zotac/GeForce_G...

    2560x1600 48 fps
    1680x1050 85 fps
    1280x1024 109 fps

    If you are talking about 5M pixels (the post that I replied to then I can assure you that you will be gpu imited and that scaling will be completely lineair...

    ps since sandy brige its hard to be cpu limited with a single gpu ^^.
    Reply
  • JojoKracko - Wednesday, March 14, 2012 - link

    Yes, disgraceful. I have to agree. Lets hope that Apple also forces a return to the infinitely more logical 16x10 format for laptops. 16x9 is simply cost saving BS which I equate to skimping on the quality of the screen.

    Make it 16x10, IPS, and I will gladly, GLADLY, kick the vendor an extra $150.

    If they can put a 2560x?? IPS panel in a $500 iPad (not 3) then they can damn well do the same in $900 and up laptops.

    All we need is ONE manufacturer to set the example, (and do it well for pete's sake, don't skimp on the keyboard to compensate), and the HUGE SALES will show all of the others that this is what they should have been doing all along.

    If they would have put a 1600x1000 quality TN panel into THIS laptop, I would have been a buyer for $100 over list price. As is though, it is useless crapola to me.

    Props for the mSata SSD and the EMPTY drive bay. Although, I'd prefer two fullsized bays and the ability to buy my own SSD and install it along with the crap HDD they would include.
    Reply
  • JojoKracko - Wednesday, March 14, 2012 - link

    Hey, if Asus can put a 1080P IPS Matte screen in an $1100 UX31A, then every other laptop maker sure as heck better start doing the same. It is just crazy that it has taken this long for the first quality laptop display to appear.

    Let me say it again.

    1080P IPS Matte Screen

    Just do it!

    http://www.notebookcheck.net/Asus-to-release-the-Z...

    This one, or hopefully a G75 with a similar spec'd screen, is something I'm looking forward to buying in the near future. Not things like this acer with the low res, low spec screen.

    Review the UX31A next please Anandtech.
    Reply

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