BENQ XL2720Z: Another official motion blur-eliminating strobe backlight


The tsunami wave of low-persistence CRT-motion-quality LCD’s continues.

Hot on heels of G-SYNC official strobe mode, and EIZO’s Turbo240 official strobe mode, BENQ announces the XL2720Z (Z-suffix) with the Motion Blur Reduction feature, which Blur Busters confirms is another high-efficiency LightBoost-style strobe backlight, official and easily enabled in monitor menus.

EDIT: Blur Busters confirmed strobing directly from BENQ staff; BENQ is also sending a review unit to Blur Busters before the Holidays, for us to test as well.
EDIT: See new Blur Busters Strobe Utility to tweak BENQ Blur Reduction.

About Chief Blur Buster

Chief Blur Buster

16 comments on “BENQ XL2720Z: Another official motion blur-eliminating strobe backlight

    • Chief Blur Buster says:

      Patience; given the pace of strobe backlight technology, it’s probable that strobe backlights will arrive to 1440p and possibly 4K within a couple years. It will probably need DisplayPort 2.0 for that to happen.

      Being designed for 2D motion blur reduction (rather than 3D Vision), the BENQ Motion Blur Reduction Mode will be much better than LightBoost, but not as good as IPS/VA. This is a good first step: The tsunami wave of official LightBoost copycats.

      BENQ is sending a review unit to Blur Busters (ETA: Before the end of the year).

      • boniek says:

        Yeah. I guess I am just too impatient ;). 4k is way out of reach though (too costly to buy and maintain) and I would be perfectly happy with 1440p. Thanks for all your work to educate people about issue.

        • SS4 says:

          The reason why lots of gamer sticks to 1080p is because its easier to get higher frame rate in game. The more pizel your pushing the harder it is to constantly put out that 100+ fps needed. I cant imagine what kind of crazy GPU setup it will take to get 100+ fps on a 4k screen unless you turn down all the graphic options . . . but then you end up with a very fluid ugly image so its not any better lol.
          Until GPU makes a tremendous leap i as well as many other will stick to 1080 although we would prefer higher res . . . just pick your poison i guess 😛

          • Chief Blur Buster says:

            That’s true too. 1080p makes it easier to keep the high frame rates needed. Strobe backlights looks best at stroberate matching framerate, and most strobe backlights run at triple-digit strobes per second (e.g. 120Hz). So, 120fps@120Hz looks best with LightBoost. And it’s easier on a GPU to do 1080p@120fps than 1440p@120fps or 2160p@120fps (4K).

  1. felvhage says:

    I was kind of expecting BENQ to devliver a G-SYNC monitor next. But this sounds like another proprietary (yet lightboost copy) strobing system.
    Still hoping for a Monitor with “adaptive-rate backlight strobing”.

  2. Alamar says:

    Hi. My question is does it burden graphic card performance like lightboost making lower max fps in games.
    Btw my opinion is they should make 16:10 and 4:3 for games/work, 16:9 is good only for cinema movies and monitor is not mainly for this.

    • Chief Blur Buster says:

      It’s a principle of motion clarity:
      — Low-persistence / impulse displays (strobe/flicker/phosphor/etc) such as Plasma, CRT, LightBoost, Turbo240, BENQ Motion Blur Reduction, etc.

      Displays with very sharp motion clarity, means that motion blur is no longer hidden by stutters. Stutters are easier to see at higher framerates on impulse/strobed displays. So you want higher framerates than usual on ALL impulse driven displays (frame rate near refresh rate), to make motion look good. Viewing http://www.testufo.com on any strobed display, clearly illustrates that frame rates matching refresh rate, looks far better on these displays.

      e.g. Strobe backlights are not necessarily demanding on GPU. It’s just a function of LightBoost being limited to high strobe rates. And it’s known that it is primarily “visually appealing” with higher frame rates matching strobe rate (and LightBoost can’t strobe fewer than 100 strobes per second). Thus, that’s why we recommend 120fps@120Hz or 100fps@100Hz. (LightBoost is like a CRT limited to 100Hz to 120Hz). Fortunately, some upcoming strobed displays can strobe at lower rates such as 60Hz or 85Hz, so you have the option of running lower frame rates without motion blur, but with increased flicker. (120Hz flickers less than 85Hz or 60Hz). With strobing only 75 or 85 times per second, you can have really great looking CRT-style 75fps or 85fps, if you want a good balance between visible flicker and CRT motion clarity, without excessive GPU requirements.

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    • Chief Blur Buster says:

      Yes, strobing versus GSYNC will certainly be a personal preference, as they fix separate motion quality aspect.

      Strobing — fixes motion blur. (Main Cons: Brightness loss. Sometimes less color. Needs high framerates to look good.)
      GSYNC — fixes tearing/stutters. (Main Cons: Doesn’t fix motion blur. Only available on TN at moment.)

      As a rule of thumb:

      Consistent 120fps — Strobing can look better at stroberate=framerate
      VSYNC ON 120fps — Strobing can look better at stroberate=framerate
      VSYNC ON, low framerate — GSYNC can look better in comparison
      VSYNC OFF — Personal preference, as strobing can amplify visibility of stutters/tearing, but you still have less blur with strobing than GSYNC.
      VSYNC OFF, ultrahigh framerate — strobing can start looking really good
      VSYNC OFF, ultralow framerate — GSYNC can start looking really good
      Variable frame rate — GSYNC can look better in comparison
      Framerates far less than stroberate — GSYNC can look better in comparison

      So the pattern emerges; consistently high framerates favours strobing, and lower/variable/fluctuating framerates favours GSYNC.

      (Feel free to discuss these aspects on Blur Busters Forums too!)

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