Combining strobing (ULMB/LightBoost) with variable refresh (GSYNC/FreeSync)

There is research by Mark Rejhon back in year 2013 about eliminating motion blur during variable refresh rates (aka LightBoost + GSYNC simultaneously).

NVIDIA has published a new patent on combining GSYNC and ULMB.

Also, the Dell S2716DG has a “bonus bug” that simultaneously enables ULMB and GSYNC. This unintended mode does flicker badly at low frame rates, but it reveals high-quality blur reduction during variable refresh rate operation, especially at higher frame rates.

Plus, Marc Repnow of Display Corner has made available a new strobing algorithm that could cheaply greatly reduce flicker at low frame rates.

Want to chat?  Join this Blur Busters Forum Thread:
Re: ULMB(lightboost) & G-sync? [What are technical challenges]

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VIDEO: Motion blur testing technique

Behind the scenes: Reviewer website RTINGS has an impressive new video about photographing display motion blur using the pursuit camera technique.

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Peer-reviewed conference paper on Blur Busters invention

The photographs on many Blur Busters page (LCD Motion Artifacts, LCD Overdrive Artifacts, 60Hz vs 120Hz vs LightBoost, etc) were captured using a pursuit camera using the pursuit camera track on TestUFO.

This Blur Busters invention now is a peer-reviewed paper on ResearchGate. It is co-authored with NOKIA, Keltek and

This Blur Busters testing technique has been adopted by several display reviewers, including,,,,, and

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Overclocking computer mice to 2000Hz+!

2000hz-mice-neededFor a long time, we have known that 1000 Hz mice has not been the final frontier.

The great news is that people are overclocking computer mice to over 1000Hz now!

See thread

For those not familiar, see the Blur Busters Mouse Guide which has been updated with this image.

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Acer Predator Z35 overclockable to 200Hz!

PredatorZ35Acer has announced a new widescreen VA gaming display, 144Hz native overclockable to 200 Hz!

It uses a VA panel, produces higher contrast than the TN panels found in traditional 120Hz+ monitors.

Resolution is 2560×1080, includes NVIDIA Ultra Low Motion Blur, and GSYNC.

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Congratulations to 120Hz Monitor Giveaway Recipient!

Congratulations to Blur Busters Forums member “Mdubz” who has won the BENQ XL2411T LightBoost monitor from the Blur Busters 120Hz Monitor Giveaway that went on in the discussion forums.


The monitor is boxed up and shipped out. Have fun, Mdubz!

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John Carmack’s 120Hz Demo Contest – Last Week

revisionFor you game programmers out there, this week is the last week for John Carmack’s 120Hz demo contest at Revision 2015!

Revision Party is an annual demoparty located in Germany, showing off old-school style demos. This is a contest for the best demo running on a 120Hz LightBoost type display .

(Tip to John Carmack — check out 120Hz “LightBoost” Projectors)

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TFTCentral reviews Acer XB270HU – A strobed IPS!

tftcentralOur friends at TFTcentral has reviewed the first IPS monitor with GSYNC and blur-reduction strobing (ULMB), the Acer XB270HU.

Getting IPS colors, much better quality than TN, while having LightBoost-style blur reduction, is a big draw of this monitor for Blur Busters readers!

Check out TFTCentral’s review of the Acer XB270HU!

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3 days left on Blur Busters Free 144Hz monitor giveaway

bbforumsThere are 3 days left of the Blur Busters Free 144Hz Monitor Giveaway! This was launched after fixing an overeager registration spam filter. Now forum registration work well! 🙂

1. Register as a new Blur Busters Forum Member
2. Make 5 relevant posts by end of day February 28th, 2015

Y0u then qualify for a drawing of a 144Hz BENQ!
For rules, see this thread.

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Acer Predator XR341CK 34″ 144Hz G-SYNC ultrawide!

acer_xr341ck[1]For the first time, a “Better Than 60Hz” ultrawide is finally arriving! (TFTCentral)

The Acer Predator XR341CK 34″ ultra-wide 21:9 curved gaming screen with G-SYNC will be arriving Q2 2015, and will provide a new option for gamers who do not want to purchase multiple monitors for surround gaming.

The resolution is a whopping 3440×1440, which pushes the limits of DisplayPort 1.2. A lower resolution model is also rumored, with 2560×1080 resolution. No word on Ultra Low Motion Blur yet (ULMB) strobing yet.

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Monoprice 30″ 16:10 aspect IPS, 2560×1600…… 120Hz!

Monoprice%20(6)_678x452[1]AnandTech visited Monoprice at CES, and they were demoing a 30″ IPS with 120Hz overclockability.

Many users have been using 1920×1200 monitors as the 16:10 aspect ratio has been excellent for computer applications, and have balked at 16:9 monitors even at 2560×1440. This monitor may make such users happy.

We’re looking forward to seeing such new options hit the market.

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How sharp 8K REALLY is

imageSeveral CES 2015 exhbitors were showcasing 8K prototype televisions. This is the future resolution upgrade after 4K, for the next decade.

Sharp was demonstrating this sharp (pun intended) 8K television. At 85″, it is higher dpi than a 24″ 1080p computer monitor. I had to get only four inches away to capture a photo of the six-point text at the very bottom of the screen.

See the gallery for a series of increasingly closer close-ups. The final photo is the smallest text at the bottom in the “eyechart” style of increasingly smaller text.

This will require a heck of a GPU-of-the-future to game on 8K.

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8K 120Hz video cable: SuperMHL

imageCan you imagine 7680×4320 resolution running at 120Hz?

At CES 2015, MHL’s booth showed off a new SuperMHL cable connection capable of 8K 120Hz. It is standardized over a USB Type C connector, with extra lanes of data traffic.

Smartphones were also playing 4K video over this cable to 4K HDTVs.

There was a also stunning Samsung 8K display showing a video loop, running over a single cable!

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Oculus Prototype Preview – 2560×1440 strobed OLED virtual relaity!

imageVisiting Oculus, the opportunity to experience some of the nearest Holodeck-like virtual reality I have experienced, viewing the Crescent Bay prototype!

My visual experience confirmed that it looks much better than the earlier DK2, and it was running 2560×1440 at 90Hz ultralow persistence (~1ms). No matter how fast I twisted my head around, I did not notice any lag or motion blur.

I put on the Crescent Bay prototype, and…

imageI witnessed a Tyannosarus Rex come chasing me, submarine interiors, standing at edge of the top of a skyscraper, and a mayhem scene in Brooklyn. This appears it can become a popular wahow we play games years from now, blowing away the best 144Hz monitor in immersion. Head tracking was superb. I could lean forward, tilt my head, turn my head. No nausea occured for me, tracking felt natural and lagless.

For best results most resembling a Holodeck, it will happily gobble up a powerful GPU setup! However, mid range cards will still benefit from the improved immersion!

Here is a poor-quality video of the Brooklyn pandemonium (taken blindly while I was wearing the oculus headset!) – this obviously needs to be experienced instead.

And here is a photo gallery of the Oculus booth. It was extremely busy, with people waiting over an hour to get a Crescent Bay demo. Fortunately, I made a reservation!

Comments? Discuss here in the forums!

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Spherical Computer Monitor at CES 2015

imageIn between all the traditional computer monitors, an unexpected globe-shaped computer monitor at Ciroptic’s booth, was fascinating to see in action. It was touch sensitive, so I could pan and rotate imagery on it.

Not practial as a desktop monitor, it could be a good Google Maps monitor! It is a display useful for commercial purposes. This sidetrack was too shiny to not resist taking a video, so here is a video:

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