Acer 390Hz monitor - XV252QF

[north-player]

Hi, how did you find my twitter? I actually did not say which monitor it was but I guess that's easy to find considering 390hz.

I was looking through Twitter to find more information about the monitor, and to see if any Canadians got their hands on it (it appears we might be SOL for a while). I just searched "390 Hz".

[umea]

Hi, how did you find my twitter? I actually did not say which monitor it was but I guess that's easy to find considering 390hz.

I was looking through Twitter to find more information about the monitor, and to see if any Canadians got their hands on it (it appears we might be SOL for a while). I just searched "390 Hz".

Yeah, I'm considering having my friend buy it from a microcenterin store and ship to me (as it'll end up 100 cheaper than buying from the Nitro from Amazon), and will probably end up cheaper than whatever price we end up with because of tariffs... Either way, I hope 390hz will tide me over until 480hz comes out in 2023 or whenever.

[Damien1991]

I have just gotten this screen, but the 390hz does not stick. I have tried disabling other features to see whether they were preventing me to change it to 390hz. Selecting 390hz does nothing and winows reverts back to the previous refresh rate. Could someone with the monitor maybe share the display specs at 390hz so I can try it with a custom resolution?

Edit: Figured it out in windows, you have to select refresh rate through display adapter settings (from the old control panel basically) and not the display settings panel from windows 10.

[lyrill]

surprised there's no more info on this considering its the fastest monitor around atm?

i'm worlds first actual gamer review and purchase probably first on hand since it shipped from and to in my city

[lyrill]

Hey guys,

I ordered this monitor a few days ago and will try it out soon. Any tests you guys want to see in particular?

Oh wow! Would you be able to do 390Hz vs 360Hz ufo test at best overdrive available? It would be a first one on the Internet. I believe this monitor also has motion blur reduction called VRB at probably 240Hz max. Some of those ufos would also be interesting to see. Hopefully you do the tests correctly . And maybe some info on input lag.

no it's available on 390 but it's garbage

[lyrill]

I wonder if you can use blur reduction at 390hz.

The other batch of 360hz only has blur reduction at 240hz (or not at all in the case of the Dell variant).

The problem with blur reduction is you want framerate=Hz, and 390fps is hard to reach.



Also, 120fps @ 120Hz has less motion blur & looks visually better than mismatched 250fps @ 360Hz blur reduction for multiple reasons, including framerate=Hz, as well as the refresh rate headroom is good for strobing techniques.

That said, 390fps at 390fps already produces a good deal of strobeless blur reduction with just only about ~2.6ms MPRT (1/390sec MPRT) without needing a strobe backlight. While not as good as a strobe backlight (1ms MPRT for bright enough), the lack of crosstalk and the lack of flicker, can make strobeless blur reduction preferable.

That's why Blur Busters is a big advocate of 1000fps 1000Hz monitors in the future -- 1ms MPRT without a strobe backlight! -- see Blur Busters Area 51 for all the good textbook learning stuff.

In these refresh rate stratospheres, it is preferable (quality-wise) to use strobeless motion blur reduction (brute frame rate + zero flicker), rather than strobe-backlight motion blur reduction.

i haven't bothered to play wt tanks for like literally one full year (cus i was on hyperx origin early batch water switches..you know the tactile ones, and then razer mini silent reds for 3 seasons after finally back to full kb apex pro that has the zone for tank hydraulics--even so the game is still pretty stupid in terms of BR matchmaking---remind me how long even the German Leo A6 has been out already and the tree not updated..?) , but somehow apparently while i get like 200fps if that on ships combined arms and dipping below 300 in planes, on tanks all low graphics easily 400+......and to think there was this remark about adding reflex (after removing it for a whole season for only "testers" or whatever....) "officially" by Nvidia quoting "this game is one hit one kill blahblahblah so very important yes to add reflex for cheating purposes" when the tank mode is the least skilled not to mention the game has always been using lag compensation anyways since literally everyone plays in world server queues.

[lyrill]

Yes, I have it. You can use VRB @390hz. Now, using the UFO ghosting test, it is as clean if not cleaner than dyac+ @240hz I can confirm that having used that panel as well. Chief, that is a good point that its difficult to reach in other games. In Battlefield 4, however, it is not difficult to reach running the game at 1600x1024.. all low mesh ultra. So I need to get stuff straight here Chief. Should I just turn on VRB for bf4, and then turn gsync back on for single player games ? or just leave gync on, cap it at 387hz, and call it a day.

It is sort of a pain with this panel because everyday you boot your pc up you need to turn VRB on it never saves not sure why. Also, if anyone is wondering if brightness is reduced at 390hz with VRB on, nope! no brightness reduction whatsoever. Unless you use VRB on Extreme. However, using ghosting test I don't notice much of a diff between normal and extreme anyway..

oh you mean VRB, yes that's one of the oc. NO, dude. my default browsing brightness is already WAY dimmer than VRB extreme because that's simply what i use. I don't get you people using what equals mobile phone "auto dimming" levels. I even have lights in my room up at almost all times unless it's super sunny I need to shade my room.

[lyrill]

any benefit from strobing at 390hz in battlefield 4 @ 1600x1024 ALL LOW -mesh quality ULTRA. = yes there is a benefit, in this game only. HOWEVER, AT the cost of screen tearing.. compared to gsync... Now, I have been using Gsync modules for years ever since the pg279q. I am confident to say that Gsync Compatible modules are never as smooth as the real Gsync module. I know Chief said this once in some older thread but he was not entirely sure. Yes, I am pretty sure that it is deff not as good as the real deal module.. even at 360hz, even at 390hz.

Is this panel better than my Predator x25 360hz ?? or perhaps the Alienware 360hz ? well. Chief made a great point in this thread about how strobing is not optimal when frames would drop below 390hz. I play single player games too, not just Battlefield 4, although that is the only multiplayer game I play and I can get 390+ fps uncapped no problem with the 5800x and 3080.. But is it worth it over the x25 ? is it worth dropping the legit Gsync module at 360hz ? Eh well. Chiefs' points are all valid about how difficult it is to maintain that fps, OUTSIDE of battlefield 4. I know hes right. Even with a top end rig. I would also like to add that when using the Ghosting spaceship test here with the 390hz panel set to 390, if I turn VRB on and then change the hz to 360hz, you can clearly see the clarity of the spaceships degrade. Lower than 360hz ? worse. 240hz ? worse. 144hz ? unbearable. So yeah, Chief pretty much hit the nail on the head here with the photo showing degradation in clarity of the ships.

@ms potatoe Please. What do you think about motion clarity without vrb, ghosting, overshoot?. It appears to have only three overdrive levels.
With which monitors can you compare it?

well ms potatoe, the next level down is of course the x25, alienware 360, and the pg259qn. I have tried all 3 and liked the x25 the most ( best colors + max brightness mode which enables 400nits+, the other two don't have that so they are darker )..

on the 390hz, without VRB? well without VRB or Gsync compatible, you have nothing at all which is just screen tear city when the fps drops lower than 390hz. Like I was saying about gsync compatible though, its just not as smooth as real gsync. Its like.. the short-cutted weak version.....Overdrive works on VRB yes, gsync compatible does not.

@discorz, normal VRB mode 390hz I would say OD1. However, we have to keep in mind that during that ghosting test, its set to 390hz and that fps does not drop during the test. So in game, when the fps drops, it may get a lot worse. Like Chief was saying, hes 100% right about that..

all in all I still have the x25 360hz. Due to these issues here, I may just keep the x25. I have a few more days to fully decide before creating the return rma with acer store. But I am confident that 360hz x25 with real gsync may very much be the best option here.. Also, one more thing about the 390hz is that stand. If you want to pull it closer to your face like a cs go pro, that stand is in the way. Nothing a good ole vesa mount couldn't handle but.. the round stand is big so it has to be back further on the desk.

it's not big it's not as wide as the 2016 asus stuff but hey I don't buy monitors every few times a year

Oh and btw came here from boardzy cus twitter algo (i unfollowed him long ago cus 2much edgy teenager), and obviously none of you people read the 8khz thread or cared to ping me here so admins merge my replies as see fit...

[lyrill]

yes, at 390hz, I can CLEARLY count that there are 3 white windows on each ship in the UFO test with VRB on and EVEN with VRR freesync mode on the ships barely degrade you can still count the windows.

on the 360hz panels, I have tested all 3 acer asus and alienware and could not count the windows in the ghosting test on the ufo's. Instead, at 360hz, they appear as white lines on the ships.

Ofcourse, details can almost always be pronounced with strobing (VRB) enabled. But what about VRB disabled. How much better is 390 vs 360Hz ufo? Is there even a difference?

Other very important thing, does the panel frameskip at 390Hz OC? U can test frameskipping here

This is what my VRR range looks like in CRU. 48-390hz. Does this mean gsync compatible IS letting me have full gsync range ? is V Rate VRR range ?

Yes, this is good.

no it does not

[lyrill]

- VRB off (freesync on) = cannot change overdrive
even at 360hz.


- VRB on = overdrive normal/normal/extreme
at any hz.

wrong. these are standalones. you are talking VRR. VRR locks one of these 2. I was also confusing the 2 when i first read this thread just minutes ago.