The Art of Gaming

Review – Optoma GT750 Gaming Projector

Hello All!

Before I left for Austin, I had a chance to sit down and play with the Optoma GT750 projector for a while.  Sometimes it takes a little time apart to fully appreciate what you had.  One thing is certain, seeing the Optoma GT750 reminded my how much I really enjoyed the GT720.

I found it to be remarkably similar to its younger brother (the Optoma GT720),  In fact, I found them so similar it was difficult to take note of the differences without seeing them side by side.

 

Just like it’s sibling, Optoma’s GT750 projector is built for gamers on a budget.  It throws an extremely bright and respectably sharp image and is right at home in a shelf mount (or floor mount?) configuration.  It also is awesomely portable.  I cannot stress enough how the “plug and play” feel of this projector is it’s greatest asset.  It’s light, small, its built-in-speakers are mighty enough to actually use, and the included travel backpack makes it too easy to pack up and walk to a friends.   Also, I can’t forget to mention…ZERO input lag.  Yes, the Optoma G750 projector matched its younger brother’s impressive result with ZERO input lag.

 

 

 

 

 

 

 

 

 

Now, just like with the Optoma GT720, there are a a few “shortcomings” I should mention.  The  Optoma GT750 sports a 2x color wheels and rainbows are seen fairly easily by those susceptible.  The black levels and shadow detail (and sometimes resolution) on the GT750 cannot match those on the projectors that retail for a few hundred dollars more.  Its partially due to the fact that this projector throws 2000+ lumens, but honestly, at $749 MSRP can you really complain?   And at that price the GT750 even includes the 3D glasses!

That brings us to the main difference between the GT720 and the GT750.  First,  the Optoma GT750 is able to play 3D content from BluRay discs as well as from PCs with 3D enable graphics cards.   The Optoma GT720 can only do 3D from 3D ready PCs.   If you purchase the Optoma GT750 projector it includes the 3D transmitter and  one pair of 3D glasses, the GT720 does not.

From a purely visual standpoint it was very hard to compare these two projectors.  I really think Optoma improved the 3D capabilities of the GT720 projector to include BluRay movies and bundled it with the transmitter and a pair of3D glasses and called it the GT750.  If they made any other improvements to the projector they were very small.  I’m curious to see what Art has to say in his full review.

Now, I know I promised a 3D inclusive review, but after many hours on tech support, Optoma and I concluded that the transmitter and the glasses I received with the unit were not functional.   I know…bummer!     They offered to send replacements, but my time with the GT750 was up and I needed to send the GT750 to Art before I packed up and left for Texas.  I was totally ready for some 3D gaming, but not this time.   Sorry folks…believe me, I’m disappointed too.  Hopefully next time!

To wrap things up, I want to say I really like this projector.   I think it will be the benchmark for budget gaming projectors I review in the future.   Yes, there are better choices for home theater enthusiasts, but the GT750 is great choice for gamers who have limited space, are on a budget and are aching for a little 3D.

That’s all for now!

-Pete

 

BTW…I’m all setup in Austin, TX and ready to go.  Art says he should have a bunch of projectors for me to check out in the next couple weeks.  Including some of the next round of competitive home theater projectors.  Stay Tuned!

 

 

 

 

News And Comments

  • James

    I have read many of the reviews of projectors currently available and I keep coming back to the gt750 solely for its zero lag.

    However I play mostly online pc gaming (BF3) and therefore 1080p resolution is a necessity.

    So are there any 1080p projectors that have zero lag?

    Thanks,

    James

    • http://www.projectorreviews.com/members/pete/ pete

      Hey James,

      I have yet to test a 1080p projector that measures 0ms input lag. The Epson 8350 seems to test very fast, however. I have not conducted any test personally, but I have seen shots of the 8350 consistently testing under 20ms. Hope this helps

      Good luck on your search!

      Pete

      • james

        thanks

  • Bill Blomquist

    Pete

    I am on the edge. ready to buy thid projector primarly for gaming using a PS3 with the “Move” bundle. I want to play Ping Pong and 007 Sharp Shooter in 3D.
    My question is…is motion gaming with a projector where image size is aprox 80 inche’s a great experience?
    I ask this because many gammers are telling me to go with a TV no bigger than 42 inch display.

    Also do you have a screeen recomendation for 3D gaming?

    Thank you very much for your reviews and blogd…they are very helpful to a newbee trying to decide on what to buy.

    • http://www.projectorreviews.com/members/pete/ pete

      Hi Bill,

      To be honest, this is a tough question for me to answer, because I don’t have a tremendous amount of experience with motion gaming on projectors. I have done it, but because of the nature of most projectors and my current shelf mount configuration, I haven’t been able to really put a lot of hours on these types of games.

      That being said, I can’t think of a better projector that I have seen motion type games. Yes, only 720p but you also get the added bonus of 3D and very, very short throw distance. The GT750 would only need a few feet from the wall to project an 80″ screen. With that short of distance, you could literally put it on the floor or a coffee table. Wherever you decide, just keep in mind you need to be behind the projector so you don’t block the light path.

      Are you playing competitively? Otherwise, I have no idea why people are telling you “no larger than 42″. My question is, why only 80″? The GT750 is an extremely bright projector capably of easily throwing 100″+. It may seem like a lot now, but I always tell people to go for a little bigger than they initially think, when the initial size shock wears off you’ll be glad you did.

      As far as screens are concerned, it really depends on your environment. I have no idea whether you can do fixed frame or you need pull down. For longevity, I almost always recommend fixed frame if you can. If you think you are going to be playing with ambient light or during the day a gray screen (instead of white) may be worth taking a look at. If not, there are a lot of cheaper white screens that could work for you.

      Keeping in mind the application and resolution of this projector, I would try to to find the largest, fairly inexpensive screen you can find. If you have a smooth, open wall, you may even think about carefully painting it and framing where you want your screen to be with 3″ black felt tape.

      Hope this helps… and I’m glad you enjoyed the blog.

      Regards,

      Pete

  • Bill Blomquist

    Pete

    Thank you for the quick reply, as I have to get this done for Christmas.(for the kids of course!)
    I will not be playing competitively.
    I do think that the people recommending a 42 ” max screen, have not played a stand up motion 3D game with a screen size of 100 + inches.
    I am trying to achieve as much player immersion as possible, and your comment of going “a little bigger than they think” rings true.
    I will be setting this up in the basement family room where the 7-1/2 foot walls are two-tone with wainscoting. So I am thinking a cheaper 100 inch pull down screen will suffice,
    One other question, do you think it would be possible to mount this projector from my drop tile ceiling?
    I want to do this because I am worried that smaller children could damage it if it is setting on the floor or a coffee table.

    Thanks again for the wonderful advice.

    Bill

    • http://www.projectorreviews.com/members/pete/ pete

      Bill,

      Mounting from the drop ceiling should be OK. The projector is small and fairly light. Just make sure it is supported properly. Probably a good idea if small children are around.

      If you have the space I would go bigger (106″, 110″ or 120″) , it definitely has the brightness for larger screen sizes. It may seem over the top, but that’s kinda the point.

      Here is some info for you to help plan your throw distance.

      For a 100″ screen the GT750 must be 5’1″ from wall

      106″ – 5’5″

      110″ – 5’7″

      120″ – 6’1″

      Another thing to think about is where you want the screen to sit in relation to the floor. If it is going to be primarily used for motion sensor games, you might want to mount the screen a little lower. I’ve seen some setups where the screen goes all the way down to the floor and you bowl into the screen like it were actually a blowing alley.

      Again, keep in mind where people are going to be standing when playing these games and make sure they will not block the light path (it is much more difficult to do with this projector, but still something to keep in mind).

      Also, with pull down screens…they can get wavy and lose tension over time (especially cheap ones) which is why I like fixed frames for budget screens. Obviously they are not possible in every setup – just letting you know.

      • Bill Blomquist

        Pete

        Considering what you said about the pull down screen, I think I will just build a frame and use sheet rock or louan sheeting as a surface.
        Can you recommend a low cost paint?
        I want to project the image to the floor also, but I need to:
        • Measure my wall and determine how far back the projector will be(per screen size)
        • Determine how far back the user will stand
        • Determine how much of a drop down from the ceiling the projector will need to be
        I then need to make sure there is ample room for the player, as to not smack the projector with the “move” wand when in play.

        I have heard of projecting the image from behind the screen, where the screen is a transparent shower curtain. With this setup the player would not be interfering with nothing.
        Have you heard of this application?
        Thanks again
        Bill

        • http://www.projectorreviews.com/members/pete/ pete

          Bill,

          I have tried several low cost options and sanding/painting a wall is probably as crafty as I would get before purchasing a fixed frame. There are a couple low cost paints. Don’t remember them off hand, I’ll get back to you on that.

          There are a number of decent fixed frame screens sold on ebay of decent quality. A friend in college bought from one (not sure which) and was very pleased with the result.

          http://www.ebay.com/itm/120-FAVI-HD-Fixed-Frame-Home-Theater-Projector-Projection-Screen-FF2-HD-120-/320808096612?pt=LH_DefaultDomain_0&hash=item4ab1a71364

          That’s just an example, I’m sure you could find other sellers/sizes.

          I have heard of projecting from behind the screen, however this application is usually much more expensive as you need the correct material. I don’t usually recommend it as a “budget” option.

          regards,
          pete

  • Bill Blomquist

    Pete

    I went for it and ordered this projector.
    I went with a pull down screen because of small children may be playing in the room later.
    I noticed that the spec for the monitor states that it may be wired up with 220 volts. I want to wire it up as 220 in hopes that it will run at a cooler tempeture.
    I will write back about our 3D gaming experience!

    Thanks again for all your advice.

    Bill

    • http://www.projectorreviews.com/members/pete/ pete

      That’s great Bill,

      Re: Heat – I didn’t notice it as a particularly warm projector. I haven’t done any digging into powering any projectors at higher than standard voltages.

      Make sure it is compatible with 220V and let me know how it all works out for you. I’m sure your children will love it! (and you too!)

  • Ronny

    Hi Pete. I bought the GT750 for my kids & me ;) for christmas. We play 25% PS3 games and primarily blue ray movies. Every friday is pizza and movie night around here with my wife and 6 boys. Yup 6 and yes i am crazy.

    My first issue is that any text like off a blue ray player or ps3 or even a computor is really fuzzy and can not be focused. However the menu off the projector text is crystal clear and blue ray movies once playing seem great. Any Ideas? Maybe a faulty unit?

    Also i would like to mount it in our living room. We have a pull down screen that covers our front window nicely and measures 106″ diagonally across. My wife loathes all the cords from our past set up with an old epson SP1 on the coffee table and she put her foot down saying new projector must mount on ceiling with cords behind walls or ceiling.

    The ideal spot out of the way is near rear wall but the lens would be about 12 feet from screen.(too big) My question here is should I return this to best buy and get something else? This projector fit my budget at $800 here in Canada. Pretty awesome for 3D and blue ray. Is this projector putting out true 1080P for blue ray movies or 720p I found it hard to interpret the specs. Im not a real techie. Anyway I could sacrifice 3D for amazing blue ray movies and medium gaming.

    I might have to just mount this projector in centre of living room ceiling if I figure the fuzzy thing out.

    Ronny

    That was long sorry, and thank you!

  • http://www.projectorreviews.com/members/pete/ pete

    Hi Ronny,

    I’m puzzled by the fuzzy letters. Maybe try reducing the “sharpness” setting on the projector? If you are using only one of the HDMI inputs, check if the other input behaves the same. I’d have to see it in person to troubleshoot more, but because other material looks good, I would say it’s probably not a faulty unit, but a setting somewhere. Try subtitles putting in a movie and see how they look.

    A 106″ screen for the GT750 would require the projector to be mounted 5’5″ from the screen. This projector is ideal for shelf or table mounting and if the coffee table has a lower shelf you may even be able to put it there so it is a little more out of the way instead of on top of the table. You need to decide if it is worth your time to mount the projector in the center of the room, because you will probably not be able to use that mount location for another projector (if you decide to upgrade some day), given the extremely short throw distance that this projector requires.

    The GT750 projector is not outputting true 1080p. It’s maximum resolution is 720p, so a 1080p projector will look more crisp and clear for sure.

    The GT750 is a great projector. I can’t think of a much better buy for the price (new). If you can stretch your budget a few hundred more you may be able to find an Epson 8350 which would give you a significant and noticeable improvement (especially with 1080p content) over the GT750 and you could easily mount it 12ft away in the wife approved zone.

    Best of luck!

    Pete

  • Zack

    Pete,

    First off, I wanted to thank you for doing these reviews! People that are looking to buy their first projector really find them useful.

    My wife and I are looking to go to a larger screen, our 37″ tv isn’t big enough to enjoy much of anything. Our viewing wall is 12 feet from the back wall with a fan right smack in the way. Looking at the 750 here got me thinking about placing it closer to the wall, bypassing the fan altogether (short throw lens). I am concerned about the 720p though! We mostly play xbox360 and watch dvd’s (not BD) and are on a budget. I think this would be our best choice, but cant seem to get past not buying an HD projector for the money. Would another projector be better in our particular situation? Can projectors be placed off-center (because of the fan) and corrected to make a rectangle? We aren’t CRAZY gamers and a tad sluggish response wouldn’t be that big of a deal.

    I think I would rather go with a 1080 projector with better blacks but cant seem to figure out which one!

    Thanks!!!
    Zack

    • http://www.projectorreviews.com/members/pete/ pete

      Hey Zack,

      Thanks for the feedback! I’m glad you find my reviews helpful.

      First, just to clarify, the GT750 is technically an “HD” projector. 720p is considered HD, it’s just not full 1080p. DVD source is usually 480p, so you will be limited by the DVD, not the projector. Typically, a more expensive projector will make DVDs look better, for a couple reasons. Better blacks, better color accuracy and better 480p >> 1080p upscaling. Just something to keep in mind.

      I actually have my projector in a similar setup as you are describing. I currently run an Epson 6500UB projector mounted ~11ft from a screen with a ceiling fan in between. I chose Epson because of its great placement flexibility. I actually have it shelf mounted beside my couch projecting diagonally (the Epson has both horizontal and vertical lens shift) so it is low enough that the fan does not block the light path. The Epson 8350 could easily do the same.

      The GT750 is a great projector, for the price I have not seen one much better (new). I don’t know how far you can stretch your budget, but here is what I would recommend. If you can afford the ~$1200 Epson 8350, I can highly recommend it for both movies and gaming. It has the best placement flexibility of any projector I’ve seen, so you should be able to make it work in your setup. It will also be a definite step up from the GT750 – better blacks, and full 1080p if you decide to upgrade to bluray.

      If you decide the 8350 is a bit too pricey, the GT750 in configuration closer to the screen would probably be your best bet. Let me know how it goes!

      -Pete

      • Zack

        Pete,

        I have been trying to decide between the gt750 and the 8350 even before you mentioned it; I cant seem to justify the cost difference, but then again I cant seem to justify not getting a 1080 projector when I can see bluray in the near future. I think because of the $500 cost difference and the fact that we have never owned a projector before, I will go with the 750 and a high contrast gray screen to get the picture a bit darker.

        I have no problem drilling holes and filling them whenever we upgrade in the future, so placement isn’t such a big deal for me.

        Again, thank you (and your buddies at projectorreviews) I am an IT tech and want to know what I am buying before I spend the money. Specs matter to those who understand them.

        -Zack

        • http://www.projectorreviews.com/members/pete/ pete

          Sounds like a plan Zack!

          Best of luck! Let me know how it goes.

        • Will

          Don’t know if I’d recommend the high contrast grey screen for this projector. If you set the projector in std mode instead of bright it will dim a bit.

          I did my own calibration with a basic eye1 display 2 meter. I found that when projected on my wall, there is too much green and red in the greyscale and not enough blue. In order to get the greyscale more accurate I had to dial down the green and red back to about -21 bias (bias and gain controls work funny on this projector). Dialing back the red and green to balance the blue ended up reducing the brightness a lot. This could be due to my wall, and I’m sure that’s a factor but the color inaccuracies noted in the projector central review lead me to believe that in default/cinema there is not enough blue and too much red and green. Cinema mode has a yellowish tint and greens don’t have a lush green tone.

          So I had to balance between getting greyscale right and having enough brightness and contrast. A grey screen would make it even more dim when calibrated.

          Also 3D cuts the brightness down a LOT. You’ll want a white screen with normal gain.

          I would get a basic white screen 1.0 gain. The projector is a budget model, so I don’t suggest spending a lot on the screen.

  • Kyle from Indy

    I play my Wii on this projector all the time, and I find it great for motion gaming. The short throw is a boon rather than a hindrance. You simply stand behind the projector, which is where you would want to be anyway. No one would want to be closer to this big of a screen than where this projector sits (its throw is MUCH shorter than any other projector I have ever used).

    Also, with the Wii, it doesn’t matter where the screen is. The fact is, your screen has nothing to do with the motion sensing. It’s all about that little sensor bar. For example, in Wii bowling, if you are sitting or standing a little to the left (perhaps on a couch with other people), don’t bowl “into” the screen. If you want the ball to go straight, you need to make sure your arm goes straight in front of you as if the lane were right in front of you, not offset. This might break the realism a tad for you, but its how the technology works. On the plus side, you don’t have to worry at all about where you put your screen.

    • http://www.projectorreviews.com/members/pete/ pete

      Kyle,

      I agree. It is a great choice for motion gaming because of the short throw. It gives you great placement flexibility and you don’t have to worry about being in front of the light path.

      -Pete

  • Jason

    Hi Pete, I noticed a few comments about 1080p projectors and input lag time. I am wondering if the Optoma HD20 would be similar to the GT750 in respect to input lag time. I feel like its a solid performer in every category at just a wonderful budget price. It would be a steal to know if the HD20 would perform as well or even slightly less than the GT750 in the lag time.

    Would love to know your input.

    Regards,

    Jason

    • http://www.projectorreviews.com/members/pete/ pete

      Hey Jason,

      I’ll see if I can take a look. I have not personally used this projector but I may be able to get some info for you.

      Stay tuned!

  • http://www.allenwp.com Allen

    Hi Pete,

    Thanks for the thoughts. I am very interested in the lag testing, but there are a number of details that are very important in assessing the validity of lag tests in different setups. My primary questions are as follows:

    1) What is the display latency of your laptop’s display at the resolution that you were using during the test? Even laptop displays, because they are LCDs, can have a few frames of latency due to image processing or simply a buffer used between communication from the graphics chip to the display. This time needs to be added onto any of the results that you publish.
    2) What was the resolution that you were outputting to the projector? Did you try testing the latency at different resolutions? Obviously some resolutions will have more resolution. For this test, I expect that you were running the projector at it’s native resolution rather than a high definition signal.
    3) Did you try any other latency timers for this test? The one at flatpanels.dk cannot be guaranteed to have accurate results because it runs through Adobe Flash, which does not guarantee every frame to be fresh. (this can cause two successive frames to have the same output). Also, the HTML version on their website is problematic, as the display framerate of javascript code is sometimes limited in web browsers. I’m running at 85Hz right now and firefox is capping the latency timer at about 60Hz.

    This is a great tool for accurately testing input lag:
    http://www.smtt.thomasthiemann.com/

    Please check out this extensive article for more details on lag testing methodologies:
    http://www.prad.de/en/monitore/specials/inputlag/inputlag.html

    Thanks again,
    Allen

    • http://www.projectorreviews.com/members/pete/ pete

      Hi Allen,

      Thanks for the great questions! You bring up a number of awesome topics.

      When first starting these tests, I ran lag tests on 3-4 different laptops to try to witness the inherent latency in the laptop display. I was unable to see a difference between the laptops, so, for the purposes of these tests I assumed inherent laptop display latency to be negligible. At the very least, (though the numbers may be offset), it serves its purpose as a “reference”. The whole point of the test is to translate qualitatively witnessed lag with time quantities and rate projector performance based on this scale. From my qualitative analysis, the numbers translate how I would expect them in the “real world”. I wrote a previous post a while back about average reaction time and how I believe the input lag measurements translate into real world performance.

      I always test lag in native resolution with all extra features like frame interpolation OFF. I do sometimes engage the features I think people use on a regular basis to see how the lag changes with increased processing, but for the most part I only care about the worst results in the settings a user would use to game.

      I did not do too much looking into different latency timers. I take a pool readings for each mode and take an average of where numbers fall (they are usually fairly consistent).

      Thanks for the info on lag testing. I’ve never seen the SMTT tool before. I actually work as an EE for a technology company in high speed/precision data acquisition and synchronization. If I really wanted to, I could setup a test that would be accurate within a few hundred nanoseconds…but again, for the purposes of this test I think the current methods, though not perfect, is quick and get’s the job done!

      Thanks for bringing this up. I try to avoid getting too technical, but it’s always fun to discuss. I may dedicate a full blog post to this if there is enough interest.

      Regards,

      Pete

  • Richard =/

    I also have a very quick question. I am looking to upgrade from a Infocus IN72 projector that I purchased back in 2005. It has all the required connections needed in a good projector. However the lumens are LOW! I am Either considering the Vivitek D538w-3D or the Optoma GT750 projector.

    In your opinnion… which one would you rather want? I saw (today) that Tigerdirect was selling the D538w-3D projectors for $599 usd. Which in my book I about fell over on the price. However the main selling point for me on the GT-750 was the 3D Emitter & the Glasses being included. Well…. and also the short throw distance. While theD538w-3D’s 2d to 3d conversion is that projectors plus (being able to make any movie NOT in 3D in 3D).

    Which of the 2 projectors do you think would be a good replacement for my aging IN72?

    TiA!!

    • http://www.projectorreviews.com/members/pete/ pete

      Hey Richard,

      I have not seen the Vivitek D538W personally, so I may be a bit bias…but the GT750 is my favorite low cost projector I have reviewed. If you’re interested in 3D, your concern about lumen output is even more valid (the GT750 has you covered). I wouldn’t worry about the 2D-3D conversion too much. While I can understand wanting to watch 3D source material, any content I’ve viewed with 2D-3D conversion I’ve ended up just switching to 2D – even on much more expensive models. Again, haven’t seen the Vivitek, but if I was shopping in that price range, I would probably choose the GT750.

      Hope that helps!

      -Pete

  • Richard =/

    Thank you sir!

    I do have a LG tv already that will do the conversion to 3D. And you are right… I also convert back to 2D alot of times. To be honest, I was thinking about just buying a Virtual FX 3D Converter and just hook it up to my Infocus IN72.

    Not sure if you have heard of those (the Virtual FX 3D converter). But the converter, a pair of glasses, will run around $80 usd. Basically it’s a SUPER CHEAP 2d to 3d converter too.

    ~Richard