True 120Hz from PC to TV

Make Your HDTV Accept Real 120Hz Refresh Rate

Purpose: Use TV as a 120Hz computer monitor. Smoother motion and less input lag.
Supported Displays: Several models including Vizio, Panasonic, etc. See comments.
Higher success rate for
Active 3D HDTV’s (the type that use electronic shutter glasses).
Alternatives: See List of 120Hz Monitors for computer monitors instead.


Some HDTVs have an undocumented ability to accept 120Hz from a PC.
Many TV’s do 120Hz internally for a different purpose (e.g. motion interpolation, active 3D).  These TV’s support the dot clocks necessary for 120Hz because active shutter glasses 3D @ 60Hz (frame-sequential) use a similar dot clock frequency as 2D @ 120Hz.

It is important to note not all televisions can be forced to accept native 120Hz via external connections through refresh rate overclocking. A successful HDTV overclock to 120 Hz will result in 50% less motion blur compared to 60 Hz. Some models that do 120Hz internally (e.g. Motionflow, 3D) can also accept 120Hz externally.

Instructions: Output 120Hz From PC To TV

Choose a Compatible Graphics Card

The best cards for refresh rate overclocking are nVidia GeForce and AMD Radeon cards. Another advantage of nVidia Geforce cards is that they are also compatible with LightBoost monitors (including ASUS VG248QE) which use a strobe backlight for zero motion blur CRT-quality during high-end desktop video gaming. Consequently, nVidia Geforce products are currently preferred (at this time of writing) over AMD Radeon products.

NOTE: Unfortunately this will not benefit game consoles (PlayStation 3, Xbox 360) since consoles are limited to 60 Hz. However, several new Sony TV’s have a Game Mode that allows the interpolation-free Sony Motionflow Impulse mode with low input lag. This is a strobe backlight similiar to LightBoost.

Choose A Refresh Rate Overclocking Method

  1. If you have an NVIDIA GeForce card, you can use NVIDIA Control Panel, which has a “Create Custom Resolution” button accessed via “Change Resolution”.
  2. Use the overclocking feature found in some cards, including EVGA Geforce Titan.  It has a slider that allows you to raise the refresh rate.
  3. Or Install ToastyX Custom Resolution Utility.
    This is a method that works on both GeForce and Radeon.
    (For GeForce, NVIDIA’s Custom Resolution feature can also be used).
  4. Or Install PowerStrip.  It can also be used for refresh rate overclocking, but not all newer graphics cards work. If the “Advanced timings options…” button is greyed out, PowerStrip is not compatible with your graphics card.
  5. Or Manual EDID override. This is the hardest method. If you need to get familiar with how EDID overrides are installed (e.g. 3D Vision Blog Instructions (different purpose)Microsoft technical info).
    (a) Download one of the [email protected] files ([email protected] EDID Overrides in this thread). This allows your HDTV to masquerade as a 120 Hz computer monitor, allowing your graphic card to send 120 Hz into your HDTV. Then you can see if the display successfully displays it!
    (b) To install an EDID Override, download the file, then right-click this INF file in File Explorer and select “Install”. This is a one-time step, even for future HDTV’s. An example good EDID override is the ASUS VG278H EDID override INF file. This will attempt to make your HDTV “masquerade” as an ASUS 120Hz computer monitor.
    (c) Next, go to Device Manager and right-click your monitor, select “Update Driver Software”, then “Browser my computer…”, then “Let me pick…”, then disable “Show compatible hardware”, then select the “EDID Override” from manufacturer ASUS (even if you don’t have ASUS), and then reboot. Repeat this step every time you reconnect an HDTV to a new input, or to a new HDTV.
    (d) IMPORTANT! (Windows 8 specific): If you’re installing under Windows 8, follow these instructions to disable driver signature enforcement before installing this INF file. The INF file is installed via right-clicking the monitor in Control Panel -> Device Manager, and updating its driver.
    (e) Finally, Control Panel will now unlock the 120 Hz refresh rate.

Test The Refresh Rate

  1. Connect your computer to the television first.
    Make your HDTV your primary display. If using multiple displays simultaneously, do not use mirror mode. Otherwise, it won’t work properly.
  2. Unlock 120Hz If Necessary
    If using ToastyX Custom Resolution Utility, add the 120Hz mode.
    If using manual EDID override, install the override as described above.
  3. Test the 120Hz refresh rate
    Go to Control Panel -> Display -> Adjust Resolution -> Advanced Settings -> Monitor
    (a) If the resolution of 1920×1080 fails, try 1280×720 at 120Hz.
    There is a much higher success rate with 1280×720 at 120Hz
    (b) If 120 Hz fails at all resolutions, try other refresh rates such as 75 Hz.
    Testing 720p @ 120Hz is usually more successful because it uses a similar dot clock frequency to the frame-sequential 3D 720p @ 60 Hz (shutter glasses signal). You may need to use a Custom Resolution via the nVidia Control Panel or AMD Catalyst in order to create the 1280×720 120 Hz resolution, if it does not already exist.
  4. Test all connections.  HDMI,  DVI-D,  VGA
    Sometimes, a HDTV successfully overclocks to 120 Hz on one connection only.
    Use compatible cables (e.g. high speed HDMI cables that are 3D and 4K  ready).
    Try to avoid adaptors (e.g. DVI-D to HDMI adaptor will not permit [email protected]).
    Try bypassing your receiver. Older surround sound units may not pass 120Hz HDMI.
    Yes, 120Hz sometimes works on older HDMI 1.3 ports.IMPORTANT NOTE:
    – Your TV may say “60Hz” even when computer says “120Hz”. Ignore this behavior.
    – Avoid DVI adaptors with HDMI as those cannot do [email protected]!
  5. Test to check for true 120 frames per second.
    Subjective Method: Drag windows around; dragging should be more fluid than 60Hz.
    Objective Method:
    TestUFO: Frame Skipping Check (web based) or Refresh Rate Multitool (install app).
    If only 60 frames per second is shown (“frame skipping”), try 720p instead of 1080p.
  6. Will it damage my HDTV?
    Not likely. The risk is low but may not be zero. Presently, no HDTV’s are currently known to become damaged because these models already do 120 Hz internally for other purposes (3D shutter glasses, frame interpolation, etc). Most HDTV’s simply make it difficult to accept 120 Hz natively from an external signal source.
    Blur Busters disclaims all responsibility for any possible damage to your display.

Special Situation: (from user reports) Sometimes a display “almost” reaches 120Hz, but not quite.  For example, 115 Hz or 118 Hz.  To fix such a minor shortfall, reduce the timings (smaller numbers for Front Porch, Back Porch and Sync) to maintain same dotclock while raising refresh rate. Using “Reduced” instead of “Automatic” within ToastyX Custom Resolution Utility, can do this too. This may allow success at 120Hz. 

Uninstalling CRU: If you have problems with ToastyX Custom Resolution Utility, just run “reset-all.exe” to undo the changes made by the ToastyX Custom Resolution Utility.

No fake frames. No interpolation tricks. No Motionflow voodoo. True 120Hz!
If you have a success report in HDTV refresh rate overclocking, please post your TV model in the new Blur Busters Forums!

official-120hz-list      our-gsync-preview

140 comments on “True 120Hz from PC to TV

  1. Pingback: [TV Buying Help]Yup this thread again by New Account - TribalWar Forums

  2. Pingback: CES 2014: Vizio debuts 4K 120-inch, 120 FPS, & Local Dimming HDTVs

  3. Keyser35 says:

    I tried to rise the framerate up to 120Hz on 2 displays.
    – JVC PS-840UD 84″ ProVerite : accepts the 1080p120 signal however there were frameskipping (one frame every two). Same issue with 720p120
    – Toshiba 55ZL2 : only accepts 720p120 but once again there were frameskipping
    Hope it helps.

  4. Andrey says:

    Hello blurbusters!!
    Did some one try this Toshiba 50L7363 for 120hz FHD signal from PC?
    Or Sony KDL-42W653A, or any Sharp or Samsung/Lg.
    The problem is I can not get Vizio or Seiki in Russia.
    Please let me know if some one successfully runs 120hz any of this tv.

    • Andrey says:

      No, i was wrong.
      real 120Hz (not 60 interpolated to 120 “truemotion120”) LG LA660V-za.bru(Z)lju is four “Z” after dot means that is real 120Hz panel. It is LC470EUH-PFP1 panel.
      And Toshiba 50L7363 uses v500hk1-ls6 panel which is not real 120Hz, am I right?
      Please Help!

  5. eriks says:

    I went to a nearby store and tried to display 120 hz signal on several new 4K TVs without any luck:
    – Samsung UE55F9090 SLX
    – Philips 65PFL9708S
    – Panasonic TX-L65WT600E

    I used the EDID method with the ASUS DG278H inf file and tried [email protected]/100 hz and [email protected]/100hz via HDMI. I got the same result for all TVs … not supported Signal and a black screen.
    At Panasonic TX-L65T600E I also tried the display port using a Quadro 6000 without success. I could display a [email protected] but no 720p and 1080p at 120hz. I was surprised that I was able to display a 4K-Signal since the Quadro 6000 officially doesn’t support 4K. But that’s about it. I was hoping to use one of the TVs for display quad buffered active stereo with [email protected], but that doesn’t seem possible. It seems none of this TVs supports a 120Hz video input. Maybe someone has any suggestions.

  6. Pingback: Sony XBR-X900B series review | Zealnote

  7. badelhas1 says:

    Great site, congrats!
    I have a Benq W700 720p 120Hz projector for one year and a half now and I selected tge 120Hz 32bits resolution since the start but I just did you frame skipping test and I am skipping frames. Can you please help me understanding why?

  8. samo says:

    I have the optima HD131Xe 3D projector which plays at 120Hz in 3D mode but whenever I connect up my macbook pro via screen mirroring, it only does 60Hz, this maybe due to my graphics card in my early 2010 macbook pro or possibly a configuration issue, id like to be able to set the projector to refresh at 120Hz as I watch lots of movies via this method. Though theres no option in the settings

  9. craffinho says:

    Been trying all day to get my Panasonic txp50vt65 to play ball, just keep getting a black screen though. Seems crazy that it can do 120hz for the 3d but can’t do it for an incoming signal. I can even get it to put my game into 3d?!?!

  10. jng728 says:

    Ok I followed these directions exactly and after having trouble with the Toasty Utility and running the reset all program. My computer will no longer extend the desktop onto a second monitor. It recognizes both monitors and will run them both individually or as a mirror but it will not allow me to use them as two separate monitors either through the windows control panel or Nvidia control panel. Whenever I try to run them both it shuts one off. I’m at a total loss, please help

  11. psynumb says:

    I recently bought a 4K LG 49UB850T (equivalent to the UB8500 in the US) partly to use it as computer monitor, and I had a questions:
    First: Isn’t a 4K TV supposed to be able to run 1080p at 120 Hz easily, as it is supposed to be able to run 4K at 60Hz with HDMI 2.0?
    If not, can I use “ToastyX Custom Resolution Utility” to force a 1080p @120 Hz on my TV?

  12. Alkaline says:

    Hey, do you know if it’s possible for the Samsung UN32H6350 to do true 120hz?

    I’ve confirmed that it does have a native 120hz screen, but I’ve also heard rumors that Samsung locks their TV’s at 60hz. I’m really hoping it will do 120hz but I can’t find much information…

    • kristoferallen says:

      I am having this same issue. It does support 77hz though. That is the highest I’ve been able to display mine. I have the 40 inch model that also has 240hz clear motion. I’m not sure why it says it supports 120hz native refresh rate if it can’t obtain that. My only guess is that it doubles every frame. It does look a ton better at 77hz though. But I will be returning it and just going with a 144hz monitor.

    • hhitech says:

      I have the Samsung UN50H6350 myself, connecting to GeF and am experiencing about the same results as you only the 77hz setting actually gives me a much more blurry image than 60hz @ 1920×1080

      • hhitech says:

        Sorry for previous accidental post.. I have the Samsung UN50H6350 myself, connecting to a GeForce GTX 770 and it seems I am experiencing about the same results as you except the 77hz setting actually gives me a much more blurry image than 60hz @ 1920×1080.. I was under the impression this is a 1080P 120hz native display, 120hz for PC gaming refresh rate was a big selling point for me. Now I am hearing that Samsung prevents ANY HDMI input devices from actually producing 120hz.. What?!? There are ONLY HDMI ports on this TV, 4 of them, nothing else. One of them is labeled as ‘HDMI4/DVI’ but I can’t find any useful info on how this ‘DVI’ port is unique in the way it handles input.. I’m now wondering if turning on the ‘Game Mode’ feature to reduce lag is even useful since I have the ‘Auto Motion Plus’ feature disabled and now running at a true 60hz all around as far as i can tell. Also enabling ‘Game Mode’ on this TV seems to lock out a few of the advanced picture options/settings.. It’s a shame I’m having these issues, it’s a pretty good looking TV with good values set on the advanced picture settings enabled, I was just hoping for higher frame rates :-/ Any thoughts? Anyone know about an advanced overclocking guide to finely tune one of these TV’s? I’m determined to know for sure if anything can be done about this before I go through the trouble of replacing this thing.

        • okrongly says:

          Did you have any luck with Samsung HDTV?
          I have ue48h6400 3d, and no way to overclock it . Is it a true with hdmi 60hz samsung lock? Any way to unlock it?
          Best regards

  13. The Good King Snugglewumps says:

    E601i-A3 running at 120Hz at 1920 x 1080 with Nvidia’s custom resolution settings. Make sure to use HDMI 1 directly from PC to TV as using any other HDMI input or running it through a receiver results in really noticeable display lag and lack of ability to overclock display at 1080p.

    Thank you for the information! While it may not help too much on the already existent 31ms display lag, it certainly makes screen blurring much less noticeable and any quick movement to be silky smooth compared to running it at 60Hz.

  14. Pingback: Samsung UE48H6640 - no to jedziemy - Strona 76 - HDforum

  15. Kaovhmf says:

    Hi! I have a Samsung UN32H5550 television wich is, supposely, [email protected] The problem is that even doing all that you have sugested I can only get the max of 75Hz. I’m using a high speed hdmi 1.4, a Nvidia GTX 980 with the pixel clock patch but my TV refuses to run at 120Hz. What can I do next?

Add Comment