Category: Main

The Main Blur Eliminator

240Hz G-SYNC Input Lag Tests

Blur Buster's G-SYNC 101

Presenting one of the biggest-ever input lag tests of a 240Hz G-SYNC monitor: G-SYNC 101: Input Lag & Optimal Settings Over 5000 input lag measurements averaged into 49 graphs. 42 scenarios, 508 runs, 5080 individual samples, 45 hours, 508 high speed videos, totalling 17.5 gigabytes, taking 2 months to analyze. Recorded across 2 games (Overwatch and CS:GO)… Read more »




Apple’s new iPad supports 120Hz and Variable Refresh Rates

At WWDC2017 today, Apple announces their new new iPad supports 120Hz and variable refresh rates: “The Most Advanced Display Featuring ProMotion: The stunning, redesigned Retina® display in iPad Pro features ProMotion, a new technology that delivers refresh rates of up to 120Hz for fluid scrolling, greater responsiveness and smoother motion content. With ProMotion, Apple Pencil is even more responsive… Read more »


Adding Variable Refresh Rate Support to HTML 5.2

Variable refresh rate technologies are getting standardized as VESA Adaptive-Sync, HDMI 2.1 VRR, FreeSync, in addition to G-SYNC. Microsoft’s Scorpio Project (the next XBox) is already planned to support variable refresh rate. Mark of Blur Busters is now an Invited Expert in the W3C Web Platform Working Group. We currently have github #375 on W3C’s HTML issue-tracking system… Read more »



Photo of an analog VSYNC signal

This is the vertical blanking interval. It allows displays to synchronize to the next refresh cycle. We used to see it on analog TVs in 1930s through 1980s when the picture rolled during lost sync. Known as vertical synchronization, aka VSYNC (it is also padded with Front Porch and Back Porch) This hidden sync signal still exists in digital signals, DVI, HDMI, DisplayPort, and is seen on PCs and Macs via Custom Resolution Utilities.

Games and graphics card often have a VSYNC ON or VSYNC OFF setting.  But have you ever wondered where VSYNC comes from?  It stands for Vertical Synchronization. From the video signal perspective, it is a signal to the display to begin a new refresh cycle. If you grew up in the days of old analog TVs… Read more »