Display Enlightment by NCX

Added the VG270UP AHVA Panel Review by =DEAD= and the VG270UP Innolux IPS Panel Review by =DEAD= to my Best Reviewed Flicker Free 144-165hz 1440p Monitors and Best Reviewed Flicker Free 27" 1440p AHVA/IPS/PLS buying guides.

The Acer uses a fake bezel/frame-less (it has an inner black bezel which reduces the perceived black depth versus a grey bezel) 144hz AUO M270DAN02 AHVA panel (advertised as IPS) with Displayport (Free-Sync + 40-144hz range), HDMI 1.4, HDMI 2.0 (Free-Sync + 40-144hz range) and 3.5mm Audio Out.  It supports AMD Free-Sync (40-144hz range), 120hz back-light strobing (named VRB=Visual Boost Response,

The reviews by =DEAD= review contains photos of the Test UFO Ghosting test which proves that the AUO AHVA panel is faster (OD Normal) out of the box, has a useful Extreme overdrive setting with only a bit of overshoot ghosting, which is noted in this section of the review.

Test UFO Ghosting Test Overdrive Comparisons: AUO AHVA versus Innolux IPS

The AUO AHVA panel has significantly more accurate preset color accuracy, especially the gamma since  the Innolux IPS has low gamma (scroll down to see this chart) while the AUO AHVA panel has nearly perfect 2.2 preset gamma and 93% DCI-P3 color space coverage for games with HDR support. The Innolux panel does use a semi-wide gamut panel which over-saturates the colors of SDR (HDTV/REC 709 & sRGB) content out of the box, but does have an sRGB mode to prevent the 34% over-saturation, as well as offer proper 2.2-ish gamma; AHVA vs IPS sRGB Color Space comparisons.

The last significant difference is the AUO AHVA panel suffers from white glow when viewing black while the Innolux IPS suffers from brownish-red glow; compare multiple photos: AUO AHVA vs Innolux IPS.

Conclusion:

The AUO AHVA panel is better since it has superior preset color accuracy or image quality for the majority of consumer content which use SDR color spaces (HDTV/REC 709 & sRGB), and has faster pixel response times and less overshoot ghosting than the Innolux panel. The Gigabyte AORUS AD27QD has similar overdrive, but is significantly more accurate than the Innolux VG270UP, and has a height adjustable stand which makes it worth the extra money since height adjustable stands cost at least 50$ US, and the 150$ US X-rite Colormunki is the cheapest accurate colorimeter. 


Added the Review by Playwares to my Best Reviewed Flicker Free 144-165hz 1440p Monitors

Curved 2560x1440 144hz semi-wide gamut and matte VA panel with Nvidia compatible (requires 10 series or better) AMD Free-Sync, 2x Displayport, HDMI 1.4 (75hz 2560x1440), HDMI 2.0 (144hz & Free-Sync support), HDR 400, RGB Lighting, 2x USB 3.0, VGA and 3.5mm Audio In & Out.  The Game Mode 1 and 2 presets offer the most accurate colors, but over-saturate some by over 20% since the 273QCX uses a semi-wide gamut panel.  AOC included a fairly accurate sRGB mode which prevents over-saturation, but locks the color controls.  The AOC claims HDR400 support, but lacks a full 10 bit and wide gamut (91.3% DCI-P3 coverage) panel with 1000cdm/2 or nit brightness (it can output 400cdm/2 as advertised) and local dimming to provide real HDR, which is to be expected from monitors under 1300$ US.  The 273QCX has a very low 8ms delay (SMT Tool measurement) and fast pixel response times (for a VA panel) without obvious overshoot ghosting.



Added the Review By PC Mag to my Best Reviewed Flicker Free 32" 4K AHVA/IPS/PLS buying guide.

Fully adjustable matte, wide gamut (98% Adobe RGB color space coverage after calibration) 10 bit 3840x2160 AH-IPS with a 14 bit 3D LUT, Displayport, Hardware Calbiration (requires compatible colorimeter; the X-Rite i1 Display Pro & i1 Pro 2 are the best compatible colorimeters), HDMI 2.0, mini-Displayport, monitor hood, perceived black depth increasing matte grey bezel, SD Card Reader, 2x USB 3.0 and 3.5mm Audio In.  The BenQ SW320 is preset to the Adobe RGB mode which vastly over-saturations the colors of SDR (HDTV/REC 709 & sRGB) color spaces unless the monitor is used with programs which support color management such as Photoshop.

The SW320 has negigble input lag (2.3ms top screen Leo Bodnar device measurement) and passable (but not great) overdrive (AMA Off; the preset High setting causes obvious overshoot ghosting) for media viewing and casual gaming.  The SW320 is a waste of money if not bought to make use of its Adobe RGB color space coverage and hardware calibration which requires a compatible, and ideally accurate colorometer such as the X-Rite i1 Display Pro & i1 Pro 2. though the hardware calibration BenQ offers is not as good as the programs offered by Eizo and NEC according to PRAD.   



Added the Review by Rtings to my Best Reviewed Flicker Free 144-165hz 1440p Monitors and Best Reviewed Flicker Free 27" 1440p AHVA/IPS/PLS buying guides.

This is the third very accurate Gigabyte AD271QD tested, and a store bought unit which makes the accuracy consistency even more impressive, and humiliating for the AUO AHVA G-Sync monitors which used to cost 700-950$ US, and were quite inconsistent, especially in the case of the AOC AG271QG and Asus PG279Q. The Acer XB271HU was consistently mediocre (for the price) while the Viewsonic XG2703-GS was consistently good. The Gigabyte is the most consistently great 144hz AHVA/IPS panel preset color accuracy wise along with the vastly more expensive Eizo FS2735 and discontinued Viewsonic XG2703-GS.

While not stated below or on my site, I think the AD271QD's overdrive performance is unimpressive due to the increased overshoot ghosting it suffers from versus the Acer XB21HU, and 1-3ms slower pixel response times. All of the 144-165hz AUO AHVA panels except for the Acer XB271HU offered great 60hz overdrive; the Gigabyte suffers from more overshoot than the Acer which makes the Gigabyte the worst option for console and PC gaming.

Rtings Surprise Rtings Gigabyte Overdrive Analysis Versus Acer XB271HU Versus Asus PG279Q Versus Asus PG279QZ

Rtings rated the Gigabyte's overdrive 9.5/10 which surprised me since they rated it higher than the XB271HU and PG279QZ, and because Belgium Hardware measured 1-3ms slower pixel response times and 5% more overshoot ghosting than the Acer XB271HU. I'm not sure what to make of these differences except that both reviews vastly conflict with some commenters on Reddit.


Measurements and Review by Belgium Hardware
Review by IT Hardware PL

Fully adjustable matte 144hz 2560x1440 Innolux IPS with AMD Free-Sync (48-144hz range) Displayport, 2x HDMI, 2x USB 3.0 and 3.5mm Audio In & Out.  The Gigabyte has very accurate preset color accuracy, but has a very minor preset pink tint, and slightly slower pixel response (some transitions are 2-3ms slower) times, and significantly more overshoot ghosting (20%) than 144-165hz 1440 AUO AHVA panels (marketed as IPS) Belgium Hardware tested such as the Acer XB271HU (15%), Asus MG279Q (5%), and Asus PG279Q (3%).

The Gigabyte over-saturates SDR (130% or 30% over-saturation of the HDTV/REC709 and sRGB color spaces used by non-HDR content) colors by default since it has a semi-wide gamut panel with DCI-P3 (HDR) color space coverage (>92%) and capability (>400cdm/2 brightness), but it does have a good sRGB mode to prevent over-saturation.