Game Input Lag Tester
This little device allows to precisely measure display’s input lag, pixel response time, motion blur, MAME emulator’s video chain lag and in the near future also any Windows game’s video chain lag. Works on LCD, OLED and CRT screens.
Measurement modes
Display Lag
This mode returns the internal delay of the display device. The measurment is taken at the top of the screen and the trigger brightness level is < 1%
Input Lag
This mode returns the minimum achievable video chain lag + display lag. The measurment is taken at the top of the screen and the trigger brightness level is < 1%
PERCEIVED LAG
This mode returns the average lag (button to screen) that the human eye can perceive. The measurement is taken in the middle of the screen and the trigger brightness level is 50%
INPUT LAG DEMYSTIFIED
- Display Scan-out The time it takes the display to redraw the screen
- Draw At this point the input controller data is processed and GPU drawing is initialized
- Input Polling Lag Time that's left between drawing and sending frames to the display
- Frame Queue Delay caused by any additional frame buffers added by the video API
- Driver Overhead Time it takes the video card to process the frame for output
- Video Interface Delay caused by the video interface buffering. HDMI, DVI, DP have different delays
- Display Processing Delay caused by the internal processing of the display
- Pixel Response G2G - Time it takes the pixel to change its brightness from 10% to 90%
SEE G.I.L.T. IN ACTION
If you want to become a beta tester of the G.I.L.T. device please contact us.