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Results: Pixel Response And Input Lag

Toshiba 65L9300U: A 4K HDTV With HDMI 2.0 Support
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To perform these tests, we use a high-speed camera that shoots at 1000 frames per second. Analyzing the video frame-by-frame allows us to observe the exact time it takes to go from a zero-percent signal to a 100%-white field.

The pattern generator is placed at the base of the monitor so our camera can capture the precise moment its front-panel LED lights up, indicating that a video signal is being received by the monitor. With this camera placement, we can easily see how long it takes to fully display a pattern after pressing the button on the generator’s remote. This testing methodology allows for accurate and repeatable results when comparing panels.

Here’s a shot of our test setup. Click on the photo to enlarge.

The brighter section of the camera’s screen is what actually appears in the video. You can see the lights of the pattern generator in the bottom of the viewfinder. We flash the pattern on and off five times and average the results.

What follows is the screen draw result.

The 65L7300U has a Game mode, which, as you’ll see below, is necessary.

Screen draw time is the same, regardless of picture mode. The 240 Hz refresh rate is responsible for Toshiba's second-place finish. But remember that this is an IPS panel. It'd take a TN display to post a faster response, though that'd make for a poor HDTV due to the technology's narrower viewing angles.

Here are the lag results in Movie and Game mode.

In Game mode, the 65L9300U beats a lot of the computer monitors we’ve tested. In all other picture modes, the processing makes any sort of fast-action game unplayable.

The control lag approaches a quarter of a second. Not that it matters much right now. If you want to hook up your PC and play at 3840x2160 using a 60 Hz refresh, you'll first need a graphics card with HDMI 2.0 support. Otherwise, you’re looking at a 30 Hz ceiling.

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  • 1 Hide
    Someone Somewhere , April 3, 2014 12:22 AM
    Argh. Why do people still make TVs with rear-exit connectors? That was the #1 hardest to find criteria last time we got a new one.
  • 2 Hide
    SteelCity1981 , April 3, 2014 1:09 AM
    Toshiba still holding onto the 3D in their TV's. I got caught up in the hype and bought me a 3D TV two years ago and honestly I have only used it maybe 4 or 5 times if that. It's something now that I look back on I could have really done without and saved money on a regular HDTV, but live and learn. a cheaper non 3D version of this would be nice. I, like most people can do without the 3D function on a TV, esp if it will reduce the cost on the TV itself. It is nice to finally see a 4k TV come with HDMI 2.0 support, something that 1080p TV's don't need but 4k do in order to take full advantage of it by allowing 60fps.
  • 2 Hide
    cats_Paw , April 3, 2014 2:10 AM
    Untill we get 4K contenent or GPUs can manage 4K resolutions in AAA titles with highest settings possible, 4K makes as much sense as a fast car in a 50 Km/h town.On the 3D matter, it does look cool on a projector if you get a 120+ inch screen, but in tvs, it looks like a gimick to me.Now... The HDMI improvment is something I want. Ive been wanting Full HD 60Hz 3D for a long time, and it seems 3D has been so unpopular that it didnt even make sense to invest in improving bandwidth.
  • 0 Hide
    Someone Somewhere , April 3, 2014 2:13 AM
    You can do 1080p120 (equivalent to 60Hz 3d 1080p) over HDMI 1.4a easily... same bandwidth as 1440p60.
  • 8 Hide
    Someone Somewhere , April 3, 2014 2:38 AM
    Actually, 4K TVs can bring a better picture. Especially if one has 4K content, or is viewing pictures or text.

    Monster cables are definitely crap though.
  • 2 Hide
    TheDane , April 3, 2014 3:48 AM
    Quote:
    Argh. Why do people still make TVs with rear-exit connectors? That was the #1 hardest to find criteria last time we got a new one.
    Argh. Why don't people use a cheap angled adapter.
  • 0 Hide
    TheDane , April 3, 2014 3:50 AM
    Like this: http://www.amazon.com/s?ie=UTF8&page=1&rh=i%3Aaps%2Ck%3Ahdmi%20angle%20adapter
  • 1 Hide
    Immaculate , April 3, 2014 4:03 AM
    Why doesn't anybody add DisplayPort to TVs?
  • -1 Hide
    Someone Somewhere , April 3, 2014 4:17 AM
    Which is extra failure points, and can block other connectors.
  • 0 Hide
    drwho1 , April 3, 2014 6:44 AM
    $1500 - $2000 would be the "sweet spot" price point for this TV.Still I'm glad to see this at $3500 is not too "exotic".... LOLSo it could reach the $2000 "sweet spot" within a year or so... Good review by the way.
  • 0 Hide
    aberkae , April 3, 2014 7:05 AM
    51 ms of input lag is too much lag for any gaming, fyi abesofmaine has a few 55 inch 4k monitors by sony samsung and lg closer to $2000 frees shipping and no tax. the 65 inchers are still $3k and up.
  • 0 Hide
    NinjaNerd56 , April 3, 2014 7:38 AM
    I have a Toshiba set in the bedroom and it's only OK overall.Of course, part of that is the 65 inch Panasonic plasma in the living room. Only 1080p, but incredible picture in every aspect. I spent about as much on it last year as this Toshiba costs now at MSRP. Don't regret a penny.Given the dearth of 4K content, I'll stick with this plasma beast for a while. May be the last year we see plasma, so I'm about to see if the 100,000 hour rating on the panel is for real.And, I'd put my calibrated Panasonic against any set, including 4K machines, with 1080p content. And I'd win. Sadly, resolution and 'smart' features are the focus of these early 4K sets and as picture comes behind.That said...it's 4K! This will be neat...in 2-3 years.
  • 1 Hide
    davidgirgis , April 3, 2014 8:26 AM
    This TV is similar to the Panasonic TC-L65WT600. According to THX, you have to sit 6.5 feet away from this TV, at most.
  • -5 Hide
    Zeroplanetz , April 3, 2014 8:44 AM
    I want 4k 120hz min, with 3d, and no need for WiFi or internet in it and at 50". For no more than $1k. That's when ill buy. No not some almost. But true 4k. It would be nice though if I could add a blutooth dongle for video receiving from my PC.
  • 0 Hide
    Traciatim , April 3, 2014 8:53 AM
    Quote:
    I want 4k 120hz min, with 3d, and no need for WiFi or internet in it and at 50". For no more than $1k. That's when ill buy. No not some almost. But true 4k. It would be nice though if I could add a blutooth dongle for video receiving from my PC.
    Do you sit under 4' away from your TV or something?
  • 0 Hide
    iknowhowtofixit , April 3, 2014 8:54 AM
    I've had very good luck with Toshiba TVs in the past 6-7 years, purchasing for myself and recommending to friends and family. It is nice to see their picture quality is still top tier.
  • 0 Hide
    Steveymoo , April 3, 2014 8:54 AM
    So uh, why does Dell charge the same for their 32" US again? This has twice the real estate, and similar (if not better) performance, but costs exactly the same.Anyone?
  • 0 Hide
    davidgirgis , April 3, 2014 9:11 AM
    Quote:
    So uh, why does Dell charge the same for their 32" US again? This has twice the real estate, and similar (if not better) performance, but costs exactly the same.Anyone?
    I guess the ultimate in picture quality right now is 4k at 60Hz. The Dell can connect to your computer via Display Port 1.2 to achieve this, but this TV cannot. It's rather a future proof concept that will accept an HDMI 2.0 capable 4k set-top player.
  • 0 Hide
    Zeroplanetz , April 3, 2014 9:19 AM
    Quote:
    Quote:
    I want 4k 120hz min, with 3d, and no need for WiFi or internet in it and at 50". For no more than $1k. That's when ill buy. No not some almost. But true 4k. It would be nice though if I could add a blutooth dongle for video receiving from my PC.
    Do you sit under 4' away from your TV or something?
    no. My point is I don't need or want all that extra stuff. When I can add my own WiFi and internet for far far less than they offer. I want great screen with great refresh and 3d ability. Everything else is meh. I don't want some android chrome or apple in my tv either. If they want to truly go somewhere with tvs, let us wirelessly sync into the tv with what we want. My PC is within 30ft of my tv soo...
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