05/22/2020 UPDATE. The IPS 240hz monitor tier list.(I've measured/tried the all) and my honest explanation why.

[axaro1]

The VG279QM review from Rtings is finally available (https://www.rtings.com/monitor/reviews/asus/vg279qm)

RLCScontender was right about 60hz being unplayable with 40.4ms of input lag.

However when looking at the Native Refresh Rate (240hz) input lag it's incredibly low, just 1.7ms and 1.8ms with VRR ON.
BFI input lag is just 1.7ms.

It completely destroy the XV273X in terms of input lag (except at 60hz)

[kofman13]

Ughhh. Trying to choose between XL2546S and the predator XB273X. I already Have an ips ultra wide that I like the colors on for video editing which is why I’m thinking of TN for best performance with the Zowie, but then also very tempted by the predator because I mostly play with g sync ON these days, and if I’m gonna have dual monitor set up, adjusting my eyes back and forth from TN to IPS could be bad.

[dadaw]

no one is thinking about the XN253QX?

[kofman13]

no one is thinking about the XN253QX?

so this is basically just the 25 inch version of the XB273 X?

[kofman13]

The VG279QM review from Rtings is finally available (https://www.rtings.com/monitor/reviews/asus/vg279qm)

RLCScontender was right about 60hz being unplayable with 40.4ms of input lag.

However when looking at the Native Refresh Rate (240hz) input lag it's incredibly low, just 1.7ms and 1.8ms with VRR ON.
BFI input lag is just 1.7ms.

It completely destroy the XV273X in terms of input lag (except at 60hz)

i thought RLCSContender said 273X was best input lag?

[kofman13]

Unwanted reaction time delays is plagued with 27" monitors, i first realized this when playing. Reaction time latency is the time it takes for your retina or your eyes to MOVE relative to how big the monitor is. I went on rocket league and ran a play where it requires me to move my eyeballs/retina more than half the screen and saved that replay, then did the same thing with the MSI MAG251rx. Let me tell you, because 27" is a much larger screen than 24.5", there was A LOT of retinal/focal point disadvantages when reacting to stimuli that required retinal/eyeball movement from the 27" predator compared to the 24.5" MSI.

moving your screen further away from your retina won't solve this problem?

if i just move the monitor two inches farther wouldnt that fix everything?

[WayUpGaming]

no one is thinking about the XN253QX?

so this is basically just the 25 inch version of the XB273 X?

its the 25" version but it's a TN panel, not IPS....I'm pretty sure

[ItwasLuck]

no one is thinking about the XN253QX?

I think you meant the XB253Q GX.

FYI, I am keeping my XB253Q GX. I just did my second calibration and I am getting these results.

2ndcalibration1hr (2).png (76.31 KiB) Viewed 4769 times

to start things off. ULMB for the acer predator xb273x. ULMB is only compatible @144hz, @120hz, and @100hz refresh rates. Unlike the MSI MAG251rx or the acer predator xb253qg x where you can strobe at 240hz, ULMB unfortunately can only go as high as 144hz for the g-sync 240hz predator.

Actually, the XB253Q GX cannot strobe at 240HZ. It is stuck at 120HZ strobing only. This is quite strange IMO, I was expecting to strobe up to 144HZ. Thankfully it has imperceivable crosstalk and I personally believe it has the best MBR implementation out of the bunch. As much as I would love to strobe @240HZ, you won't get the best motion clarity. There is a reason why XL2540 users strobe @185HZ despite being able to push 240HZ.

Regardless, I am quite happy with the XB253Q GX. I mainly play EFT so getting anywhere above 120 fps is impossible with current gen cards. I really wish Acer would unlock the refresh rate for VRB. Other than that, I might try CRU or ToastyX and see if I can play around with the settings and get it working.

Lowest Input lag with ULL ON. Decent enough MPRT to run at 240HZ (without strobing). Amazing colors, I was quite shocked to see an hour calibration that gives me such good results. I might go for a 4-6 hour calibration to see if I can push this thing to its limit.

Something people forget to remember, while the ASUS and MSI have almost as low input lag at their max refresh rate, at 120HZ the Acer is quite a bit better and this is further amplified if you are console gaming at 60HZ. Variable Sync does work through HDMI on this monitor if anyone was curious.

[RLCSContender*]

The VG279QM review from Rtings is finally available (https://www.rtings.com/monitor/reviews/asus/vg279qm)

RLCScontender was right about 60hz being unplayable with 40.4ms of input lag.

However when looking at the Native Refresh Rate (240hz) input lag it's incredibly low, just 1.7ms and 1.8ms with VRR ON.
BFI input lag is just 1.7ms.

It completely destroy the XV273X in terms of input lag (except at 60hz)

ALL M250HAN01.3 24.5" 240hz ips monitors are equal or similar in input lag(aw2521hf, vg259qm, mag251rx, xb253qgx). xb273q x is the exception due to negligible processing delays

i've already covered that on page 60, the 5th post(when i was comparing the msi vs the xb273x"

No, it will not beat the xb273x g-sync predator in input lag. Just take the xv273x, then REMOVE all that input lag because the g-sync scaler waits for the front buffer from the GPU; therefore, NO input lag, No tearing, no stuttering, blah blah blah

on my oscilloscope, anything less than 0.5ms input lag, i don't count. Obviously, there's "SOME" processing delay on the acer panels, but it's SOO small that, even a half a millisecond isn't worth measuring.

you have to factor in the TUNING from each company that sells these monitors. Some have better input lag than others(acer is on top), and some have better responset imes than others(MSI/g-sync predator) I thought i set that understanding throughout my topic.

[RLCSContender*]

no one is thinking about the XN253QX?

so this is basically just the 25 inch version of the XB273 X?

a TOTALLY different panel by AUO. The panel they used on their TN has a crapload of input lag. Moreso than the 24.5" 240hz IPS panel AUO uses for the aw2521hf, xb253qgx, mag251rx, vg259qm,