All Benq Z 1080p monitors can accept 2560x1440 natively

[Falkentyne]

AMD VSR and Nvidia DSR is not needed.
Seems to be an interesting "side effect" of them accepting Vertical total tweaks for strobing.

*THIS ONLY WORKS AT 100HZ! 60hz shows "Out of Range!"

The following timings work over Displayport without any patcher required. DVI will need the AMD/Nvidia pixel clock patcher).

2560x1440
Front porch 48 pixels, 3 lines
Sync width 32 pixels, 5 lines
Horizontal total: 2656 (the default HT which was 2788 just black screened Out of Range)
Vertical total: 1500 (default VT is 1485, which shows a soft out of range error if used at 1920x1080, VT must be higher than 1494 to avoid this out of range error).

Pixel clock: 398.40 MHz

Tested on XL2411Z and XL2720Z.
If your DVI cable is not up to par, you may get image corruption over DVI.

120hz: Monitor shuts off instantly over DVI (478 MHz pixel clock too much)
120hz: Image appears over displayport; swimming pixels (image corruption).

Blur reduction crosstalk seems identical to 1920x1080 when using the default 1125 vertical total.

OSD info reports 2560x1440@60.
Monitor factory scaler (factory menu; V4 firmware only) reports 1280x1440@60hz (it also reports this at 1920x1080 at any refresh rate when VT 1500 is used).

Enjoy!

(this won't work on the Asus VG248QE, even though it's the same panel as the XL2411Z; VG248 won't accept any vertical total higher than 1195; just says out of range).

*Edit*
video card won't downclock the memory when idle. Probably because the timings are not standard (HT is lower than normal, VT doesn't match a normal 2560x1440 display).

60hz does NOT WORK.
Black screen "out of range"

61 hz DOES WORK (videocard downclocks fully when idle, also. wonder why it downclocks when 100hz doesn't).
Chief can you explain that?
I Think it has something to do with 60hz not accepting a 1500 VT tweak but 61hz accepting it (at our native 1920x1080).

[Black Octagon]

What a strange and wonderful thing. Thanks for sharing. How does that resolution look on a 24" panel?

[Falkentyne]

Same thing as AMD VSR active for 2560x1440. Ugly text. Games are supersampled downward.

Can someone with an older Lightboost T or TX/TE series (The ones without benq blur reduction) try testing it?

[Q83Ia7ta]

tested. works with xl2411z.