I use the word analysis rather than review because I pretty much only provide measurements of the monitor, not my judgment, and I don’t recommend the product so you can judge whether the monitor is good or bad after reading the post.
Spectrometer: LCE Intelligent HP350L (I have a reference instrument to calibrate the Y-axis of the spectrum and cancelled the original matrix calibration), Colorimeter: Klein K-10.
The GtG convert to the MPRT is based on the formulae used in this thesis. “Analytical equation for the motion picture response time of display devices”.
Some of the measurements were taken from different firmware as I was too lazy to re-measure.
Sample rate 1nm, FHWM 6.5 .
Blue color peak 449nm, white color blue peak 449nm.
CIE1931 Colour gamut (Based on firmware 1.05)
|Colour gamut||Colour coverage|
|50 times average||lowest|
|Refresh rate 144hz FPS cap 360 VRR on 10bits||13.892 ms||10.012 ms|
|Refresh rate 144hz FPS cap 360 VRR on 8bits||13.367 ms||9.389 ms|
|Refresh rate 144hz FPS cap 75 VRR on 10bits||12.976 ms||5.729 ms|
|Refresh rate 144hz FPS cap 60 VRR on 10bits||14.301 ms||6.809 ms|
|Refresh rate 60hz FPS cap 360 VRR on 8bits||18.595 ms||10.451 ms|
Testing tool is OSRTT ,Based on monitor fw106 PS5 test5 .
Input lag includes graphics card latency, currently OSRTT can only exclude USB latency.
To verify repeatability, I re-measured the XB323U GX to ensure that the system latency was reproducible.
GtG Response Time Measurement
▲In order to ensure that the gamma calibration is accurate, I have corrected the gamma in the test.
▲144hz High OD (fw106 test5)
▲144hz Normal OD (fw106 test5)
▲144hz User OD 11 (fw106 test5)
▲60hz High OD (fw106 test5)
▲60hz Normal OD (fw106 test5)
▲60hz User OD 11 (fw106 test5)
GtG measurement on firmware 1.05 → https://i.imgur.com/IvbRwN4.png .
̶I̶n̶ ̶t̶h̶e̶ ̶n̶e̶w̶ ̶v̶e̶r̶s̶i̶o̶n̶,̶ ̶e̶v̶e̶ ̶h̶a̶s̶ ̶a̶d̶d̶e̶d̶ ̶V̶R̶R̶ ̶d̶y̶n̶a̶m̶i̶c̶ ̶O̶D̶ ̶g̶a̶i̶n̶.
I took an oscilloscope measurement to verify and updated OSRTT to today’s (6/7) version and the measurement results are completely different , The result is that there is no VRR dynamic OD support.
MPRT (Based on firmware 1.05)
Refresh rate : 144hz & Normal OD >average MPRT of 5.709ms.
Refresh rate : 144hz & Normal OD & Duty cycle 25% >average MPRT of 1.736ms.
For comparison, the OLED MPRT at 120hz is 6.65ms and at 185hz is 4.32ms.
This monitor has red ghosting ,This is caused by the KSF backlight of Nano IPS.
Strobe Backlight Measurement (Based on firmware 1.05)
|Backlighting time||Brightness(nits)||Duty cycle:White||Duty cycle:Green Blue||Duty cycle:Red||Photodiode Probe Voltage||Note|
|Long||225.5 nits||24.75%||24.7%||24.82%||4.64V||Clarity range slight offset to bottom of the screen|
|Custom Minimum||6.8 nits||2.12%||2.08%||2.15%||3.58V||Flicker visible to the eye|
- With the 60 Hz strobe backlight, you can see monitor flickering with your eyes.
SDR - Uncalibrated Colour Measurement
▲SDR - Wide color gamut (target gamut DCI-P3/Gamma2.2)
▲SDR - sRGB mode (target gamut Rec709/Gamma2.2)
HDR600 Uncalibrated Colour Measurement
▲Target gamut is Bt2020/PQ, Measured window 100% range.
Compared to the old version, the new version of fw HDR is worse in of PQ and colour accuracy .
HDR full screen contrast ratio 15935:1, checkerboard contrast ratio 980:1 .
HDR has a PWM frequency of about 3167hz .
HDR and SDR use the same user white balance settings, but you can’t adjust it in HDR.
HDR edge localdimming is very responsive, but there is no blooming and flicker suppression.
Measurement window percentage does not affect PQ response.
HDR will flicker in this screen. The earthquake night - Shadows of backstreets of Japan 6・4K HDR - YouTube
HDR localdimming may trigger redghosting in the above youtuber link
The severity of PQ inaccuracies should no longer be considered certified for FreeSync Premium Pro.
When used with other MSTAR chip monitors, if you turn on Windows HDR on both monitors, there is an bug that increases the latency of the other MSTAR chip monitor. (The average latency is 106% higher).
The dot sights are too small and the moveable range scales on all sights are too large.
When you adjust the gamma to 2.2, it causes the factory calibration to fail and you have to reselect the colour gamut to fix the problem.
̶T̶h̶e̶y̶ ̶c̶l̶a̶i̶m̶e̶d̶ ̶b̶e̶f̶o̶r̶e̶ ̶r̶e̶l̶e̶a̶s̶e̶ ̶t̶h̶a̶t̶ ̶t̶h̶e̶y̶ ̶w̶o̶u̶l̶d̶ ̶a̶d̶d̶ ̶V̶R̶R̶ ̶d̶y̶n̶a̶m̶i̶c̶ ̶O̶D̶,̶ ̶b̶u̶t̶ ̶i̶t̶ ̶w̶a̶s̶n̶’̶t̶ ̶i̶m̶p̶l̶e̶m̶e̶n̶t̶e̶d̶ ̶u̶n̶t̶i̶l̶ ̶t̶h̶e̶ ̶F̶W̶1̶.̶0̶6̶ ̶b̶e̶t̶a̶ ̶t̶h̶a̶t̶ ̶a̶ ̶s̶i̶m̶i̶l̶a̶r̶ ̶f̶e̶a̶t̶u̶r̶e̶ ̶w̶a̶s̶ ̶i̶m̶p̶l̶e̶m̶e̶n̶t̶e̶d̶.̶ Still no VRR dynamic OD support.
No cables except for power cables.
HDR local dimming logic causes the greyscale colour depth test to look like a defect.