Quick Answer

Motion blur on gaming monitors is caused by two mechanisms: pixel persistence (pixels staying lit too long between frames) and sample-and-hold display technology that holds each frame for the full refresh interval. ASUS ELMB Sync addresses both by strobing the backlight in sync with the adaptive refresh rate.

The Two Sources of Motion Blur 🔍

Most gamers assume motion blur comes only from slow pixel response, but sample-and-hold is equally responsible. Modern LCD and OLED screens display each frame continuously until the next one arrives. Your eye tracks a moving object smoothly but the screen holds the same static frame the entire time, creating a perceived smear. At 165Hz, the sample-and-hold window is 6ms per frame, long enough for the eye to register blur at competitive sensitivity settings. The second source is genuine pixel lag where a pixel cannot switch grey-to-grey fast enough, leaving a colour trail.

How ELMB Sync Reduces Both Types 💡

ELMB stands for Extreme Low Motion Blur. The original ELMB strobed the backlight between frames but required disabling adaptive sync, so frame-rate dips caused tearing. ELMB Sync synchronises the backlight strobe with the variable refresh rate signal, allowing both technologies simultaneously. The backlight flashes only when a completed frame is ready, eliminating the hold period and preventing tearing. On ASUS ROG monitors with ELMB Sync, testers record motion clarity equivalent to a CRT at 240Hz. The trade-off is reduced brightness (strobing cuts luminance by 30 to 50 percent) and potential eyestrain during long sessions.

Practical Settings for SA Gamers 🎮

To get the most from ELMB Sync, maintain a consistent frame rate above 200 fps in titles like CS2 or Valorant, because strobe frequency must stay near the monitor's upper range for maximum sharpness. Enable ELMB Sync in the OSD and set overdrive to medium to avoid inverse ghosting alongside the strobing. If you notice headaches after 30 to 60 minutes, reduce strobe frequency or switch to standard FreeSync for casual sessions. ASUS ROG monitors with ELMB Sync start from around R8,500 for 24-inch 1080p at Evetech, with 27-inch 1440p options up to roughly R15,000.

TIP

Boost Brightness After Enabling ELMB Sync ⚡

ELMB Sync lowers perceived screen brightness noticeably. After enabling it, increase your monitor's backlight level by 20 to 30 percent above your normal setting to compensate. If the panel's maximum brightness still feels dim in a well-lit room, use ELMB Sync only in competitive sessions and switch it off for casual gaming or content watching.

FAQ

Does ELMB Sync work with NVIDIA GPUs or only AMD?

ELMB Sync operates through adaptive sync signalling rather than a proprietary G-Sync module, so it works with both NVIDIA and AMD GPUs. On NVIDIA, the monitor must be certified as G-Sync Compatible. On AMD, FreeSync Premium or Premium Pro certification applies.

Can I use ELMB Sync in windowed mode?

No. ELMB Sync requires exclusive full-screen mode to control the display's refresh timing precisely. Windowed and borderless-windowed modes route rendering through the Windows compositor, interrupting the sync path.

Is ELMB Sync better than NVIDIA Ultra Low Motion Blur?

Both achieve similar results through backlight strobing, but ELMB Sync's ability to combine strobing with adaptive sync is a meaningful advantage over ULMB, which required disabling G-Sync. For SA gamers who play at variable frame rates, ELMB Sync's flexibility is the more practical choice.

Want motion blur eliminated at every frame rate? Check out Evetech's selection of ASUS ROG and TUF gaming monitors featuring ELMB Sync in 1080p and 1440p across 24-inch and 27-inch sizes.