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XL2546 No native 240 hz option

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XL2546 No native 240 hz option

Postby nd911 » 11 Sep 2017, 12:46

Hi,

My first post so be gentle :)

I just recently got the xl2546. After installing the driver I noticed I couldn't get native 1080p at 240 hz(max is 144). But if I custom make one I can get up to 215. Highest option in non-custom resolution @ 240 hz is at 1280x1024. Why is this?

I'm running this with DisplayPort on a MSI GTX770. I'm wondering if my gpu is the bottleneck?
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Re: XL2546 No native 240 hz option

Postby Chief Blur Buster » 11 Sep 2017, 13:52

Note: Moving this post away from Forum System Help (help on how to use forum)
into the correct General forum (help on how to use monitor)


Yeah, the 770 has difficulty with 240Hz monitors. I get many reports with 240Hz difficulties on 600-series and 700-series GeForce cards.
It is likely the maximum DisplayPort/dotclock limitation that your GTX770 can support. I've gotten emails, messages, and forum private messages with subjects similar to "GeForce GTX 660 can't do 240Hz at 1920x1080" and GeForce GTX 680 users and GeForce 760/770 users, so your card seems to follow the pattern of being probably unable to output 1080p240Hz.

Ideally, you will want to upgrade to one of the following very-recent GPUs to properly support 240Hz while also having enough GPU power to crank out as many frames per second as you can.
- NVIDIA GeForce GTX 1060
- NVIDIA GeForce GTX 1070
- NVIDIA GeForce GTX 1080
- NVIDIA GeForce GTX 1080 Ti (currently, the fastest enthuasiast-priced GPU type as of Sept 2017)
- AMD Radeon RX Vega 56
- AMD Radeon RX Vega 64 (quite competitive to 1080 non-Ti and supports FreeSync of XL2546 when DyAc turned off)

NOTE: Our tests with a single GPU showed that doing either more framerate or more Hz will lower your input lag -- for pretty much any modern gaming monitors in general (especially within the same brand name / panel / model line when input lag of a specific Hz is identical between them). For example:
- Refreshrate-wise, 100fps @ 240Hz has less input lag than 100fps @ 120Hz. (framerate same, refreshrate higher)
- Framerate-wise, 300fps @ 120Hz has less input lag than 150fps @ 120Hz. (framerate higher, refreshrate same)

However, increasing both fps and Hz simultaneously does even more in reducing input lag and improving responsiveness for a specific game. It's useful to get a good fast graphics card that you can afford if competitive gaming and/or responsiveness feel is important to you.
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Re: XL2546 No native 240 hz option

Postby nd911 » 11 Sep 2017, 14:10

Thank you so much for confirming,

Beeing a cs:go player frames is pretty much cpu dependent. Do you have a bang-for-buck card to recommend ?
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Re: XL2546 No native 240 hz option

Postby Chief Blur Buster » 11 Sep 2017, 14:18

nd911 wrote:Thank you so much for confirming,
Beeing a cs:go player frames is pretty much cpu dependent. Do you have a bang-for-buck card to recommend ?

Yes.

An overclocked GTX 1070 with a ~1800Mhz boost (for only a few tens more than a non-overclocked 1070) will almost reach entry-level GTX 1080 for only 2/3rds the price, if you're trying to save a big buck. Personally, I have a 1080 Ti because I wanted to also be ready for VR.

Even if you are CPU-limited, a 20% faster framerate (on single GPUs) still translates to 20%-less GPU-related input lag addition to your button-to-pixels input lag chain. Even using a 2-3x faster GPU to push framerate minimums up only 25-to-40% on a loaded server can still quite noticeably improve your CS:GO aiming during heated battles. And you'd more ready for newer more-GPU-demanding competitive games if they catch your attention, too!

On a very tight budget, a basic 1060 3GB can do in a pinch to get 240Hz back up and running for just barely above a couple C-notes, but I don't recommend skimping that much if you're buying a new card anyway.
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Re: XL2546 No native 240 hz option

Postby nd911 » 11 Sep 2017, 18:12

Chief Blur Buster wrote:
nd911 wrote:Thank you so much for confirming,
Beeing a cs:go player frames is pretty much cpu dependent. Do you have a bang-for-buck card to recommend ?

Yes.

An overclocked GTX 1070 with a ~1800Mhz boost (for only a few tens more than a non-overclocked 1070) will almost reach entry-level GTX 1080 for only 2/3rds the price, if you're trying to save a big buck. Personally, I have a 1080 Ti because I wanted to also be ready for VR.

Even if you are CPU-limited, a 20% faster framerate (on single GPUs) still translates to 20%-less GPU-related input lag addition to your button-to-pixels input lag chain. Even using a 2-3x faster GPU to push framerate minimums up only 25-to-40% on a loaded server can still quite noticeably improve your CS:GO aiming during heated battles. And you'd more ready for newer more-GPU-demanding competitive games if they catch your attention, too!

On a very tight budget, a basic 1060 3GB can do in a pinch to get 240Hz back up and running for just barely above a couple C-notes, but I don't recommend skimping that much if you're buying a new card anyway.


Thank you so much for your input. I already regret not being signed up here earlier. Love the forum

Btw how much power does the one linked need, compared to my 770? ( Cooler Master V550S, 550W PSU
ATX 12V V2.3, 80 Plus Gold, Modular, 2x 6+2pin PCIe, 6x SATA, 3x Molex, 1x FD )
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Re: XL2546 No native 240 hz option

Postby RealNC » 11 Sep 2017, 19:29

I was pushing 300FPS with a GTX 560 Ti in CS:GO. An upgrade to a GTX 780 brought only a small FPS boost. A further upgrade later on to a GTX 980 Ti brought virtually zero performance gains.

So if you're short on cash, you can go for a 1060 and spend the extra money on the CPU. The 1070 is better though since it's faster with other games. For CS:GO, it's just as fast a the 1060 though.
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Re: XL2546 No native 240 hz option

Postby frankfurt » 13 Sep 2017, 08:38

Have the exact same issue with my XL2540 and GTX 760. My card definitely has DP1.2 so technically 1080p240hz should work but nope, tried everything. Max custom res I can get is 223Hz.

nd911 wrote:Btw how much power does the one linked need, compared to my 770? ( Cooler Master V550S, 550W PSU
ATX 12V V2.3, 80 Plus Gold, Modular, 2x 6+2pin PCIe, 6x SATA, 3x Molex, 1x FD )


550w will be more than enough with any single gpu setup these days. No need to upgrade.

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Re: XL2546 No native 240 hz option

Postby Chief Blur Buster » 13 Sep 2017, 09:07

It's not just DisplayPort, but also the maximum dotclock that a graphics card is able to output. There's not enough dotclock capability in a 760 to output 1080p240.

The great thing though, is most BenQ/Zowies are quite multisync and supports any refresh rate (in literally 1Hz increments) so one can limp along on a 760 until a GPU upgrade.

RealNC is right though, 1060 is plenty enough for CS:GO but that usually won't be the only game you ever play. I'd still nudge towards a 1070 for the headroom for newer games and overclocked CPUs.
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