Acer 390Hz monitor - XV252QF

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effjaysea
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Re: Acer 390Hz monitor - XV252QF

Post by effjaysea » 03 Jul 2021, 12:57

RestTarRr wrote:
03 Jul 2021, 04:36
Thanks for the input. BTW do you play every game with dyac or is the monitor still really good competitively even without it. I just don't know if I wouldn't get headaches from it. Final question - does dyac feel bad if the FPS isn't consistent. PUBG is my main fps game and the fps there is really hit or miss. Would it look bad if fps is jumping around 140-250?
I only use DyAc in Valorant & CS so I'm not sure if it would feel bad in games where your fps is all over the place. I'm sure there's a version of this monitor that is cheaper and without DyAc. Best thing would be to buy it from somewhere you can return it if it causes you headaches.

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Discorz
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Re: Acer 390Hz monitor - XV252QF

Post by Discorz » 03 Jul 2021, 15:05

I did some research, compared bunch of ufos and their ghosting trails. This is roughly where XV252QF should land on Hardware Unboxed list.
The positioning should be correct, but correct me if I'm wrong.
Image
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ms.potatoe
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Re: Acer 390Hz monitor - XV252QF

Post by ms.potatoe » 05 Jul 2021, 15:22

Discorz wrote:
03 Jul 2021, 15:05
I did some research, compared bunch of ufos and their ghosting trails. This is roughly where XV252QF should land on Hardware Unboxed list.
The positioning should be correct, but correct me if I'm wrong.
Image
I can't tell you just looking at the numbers. 960 ufo test bug (390Hz) is correct, at 1080 it has a bit more trails and a bit less sharp.

Now I'm with input lag. My other gaming monitor is VG279QM ( 280Hz, OD 80, VRR, 272fps cap ). Motion is a bit clearer with Acer, it's easier tracking enemies in game and better scores in Kovaaks tracking maps. But i feel Asus has better input lag at least with VRR, not sure if it's the slow motion sense of the targets due best motion in Acer but im not in love with my flicks in XV252QF. I'll try a few days.

**For AMD GPU owners. I had never tried the Radeon antilag, I guess it will be a prerendered frame option, but the feel in "mouse responsiveness" is great with VRR.

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Discorz
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Re: Acer 390Hz monitor - XV252QF

Post by Discorz » 06 Jul 2021, 02:36

VisorizoR wrote:
02 Jul 2021, 13:12
Vrb, dyac, elmb, ulmb, mbr are all backlight strobing modes named (and tuned) differently by manufacturers. Some do good and some bad job at it. Acers seem to do mediocre with this one.

Is vrb really brighter? Maybe it gets brighter because when vrb is disabled its set to lower brightness value, but when u enable it its higher value. Same thing happens with my vg279qm, with elmb disabled I use brightness 20 but when enabled it automatically goes to 90 which looks brighter. Meaning it actually dims the brightness but the reference brightness is lower. Can you check on this?

120Hz strobing (if tuned well) can look better than 240+Hz with less crosstalk. More about it here. So with today's monitors response times its preferred to use 120/60Hz over 240Hz strobing for better motion clarity, with a sacrifice of smoothness and lag (check out the difference here). How does the higher VT effect the overshoot? Does vrb have more or less overshoot with tuned VT at 120Hz?

Vrb has been discussed alot here but we seem to left out freesync.
So if enabling freesync locks the overdrive, how is the overshoot at 60Hz and 240Hz. I would assume it has alot of it. If 390Hz is tuned well that would mean overshoot will start to gradually appear as refresh rate decreases. Could you test this, I'm very curious about it?
e.g. like on FI27Q-X on Speed overdrive

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Last edited by Discorz on 05 Oct 2021, 05:24, edited 1 time in total.
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VisorizoR
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Re: Acer 390Hz monitor - XV252QF

Post by VisorizoR » 06 Jul 2021, 17:06

@discorz

Yes i have checked VRB normal corretly... it highers the Brightness and maybe also the contrast... (judging with my trained eyes)the brightness should be around 400+ cd/m2
(maybe they archive this by overvolting the backlight LED while in this strobe mode... so thats why it is Brighter ?)

Higher VT doesnt effect Overshoot at lower HZ with VRB or without...

Yes with Freesync active Overdrive is locked... and there is almost no Overshoot... at any HZ... so every HZ-setting has his own perfect auto tuned Overdrive.

In my eyes there is no point in using Freesync with this monitor... on Apex with 190 FPS... VRB normal is brighter more contrasty more sharp(in motion) and i cant see tearing with the best will on 390HZ fixed 190 FPS cap...

i havent seen the other 360 HZ monitors with my own eyes
but to be honest when they rly dont have the same VRB normal(backlight strobing) mode then they are shit... :) becouse without VRB on normal the Picture is a little more smeary (and this smeary picture i think hinders ur reaction time)

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Re: Acer 390Hz monitor - XV252QF

Post by Discorz » 07 Jul 2021, 02:23

VisorizoR wrote:
06 Jul 2021, 17:06
Yes i have checked VRB normal corretly... it highers the Brightness and maybe also the contrast... (judging with my trained eyes)the brightness should be around 400+ cd/m2
(maybe they archive this by overvolting the backlight LED while in this strobe mode... so thats why it is Brighter ?)
Someone here confirmed there is no brightness hit too. That's good for acer. We have a VRB+ (DyAc+) lol.
VisorizoR wrote:
06 Jul 2021, 17:06
Yes with Freesync active Overdrive is locked... and there is almost no Overshoot... at any HZ... so every HZ-setting has his own perfect auto tuned Overdrive.
Is it really possible that acer did some type of smart overdrive that adjusts by it self, almost like variable overdrive?
Now the question is does it adjust to fixed refresh rates or automatically to full vrr range with one refresh rate like 390Hz?

VRB normal seems to be very good as some of you described it, better than VRB extreme.
Are you interested in doing ufo test? Possibly 390Hz VRB normal + OD extreme without VT mod? We only know how VRB extreme + OD normal and freesync off + OD normal looks like for now. I'll try to guide you through if you want.
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Re: Acer 390Hz monitor - XV252QF

Post by Discorz » 08 Jul 2021, 02:23

ms.potatoe wrote:
05 Jul 2021, 15:22
960 ufo test bug (390Hz) is correct, at 1080 it has a bit more trails and a bit less sharp.
So were previous videos taken on bugged 960 or 1080pps? Does it move slower than at 360Hz like VisorizoR said?
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Re: Acer 390Hz monitor - XV252QF

Post by ms.potatoe » 08 Jul 2021, 14:36

Discorz wrote:
08 Jul 2021, 02:23
ms.potatoe wrote:
05 Jul 2021, 15:22
960 ufo test bug (390Hz) is correct, at 1080 it has a bit more trails and a bit less sharp.
So were previous videos taken on bugged 960 or 1080pps? Does it move slower than at 360Hz like VisorizoR said?
Videos were taken at 960 390Hz, slower than 960 360Hz.

skxtier
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Re: Acer 390Hz monitor - XV252QF

Post by skxtier » 17 Jul 2021, 09:41

Finally a video review of the monitor (slightly different model), but i assume its the same panel.

and its by Bijan Jamshidi :D .

I can't post it since my account is new but go to his channel and check it out.

itsflero
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Re: Acer 390Hz monitor - XV252QF

Post by itsflero » 17 Jul 2021, 11:32

I just watched the review. Is the aopen the same monitor exactly. I noticed he said tvr instead of vrb and that the ufos on his weren't as clear as some on here. Do you think its because of a difference in monitor or difference in user testing?

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