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z690p d4 eye-strain

manowar_gub
Level 7

Hi,

I recently upgraded my PC ( z390 + 9600kf ) to z690p d4 + 12600k, I use the same 8 bit 60hz benq bl2420z monitor with DP cable

And immediately after turning it on, I felt that the brightness of the monitor become higher (where there was a slightly gray color, it became bright white), and the picture became “very sharp” as I can notice pixel rows

The main issue - I got feeling with "pupils turn out" and there is pain between the eyebrows, which goes away an 30...60min after stopping using the new motherboard.

0) I set monitor to 6bit only, with or without dithering - didnt helped. I changed Sync polarity in CRU from "++" (default) to "+-" and eyes got a 3 sec relax and then got pressure back

1) This eye-strain effect persists even in BIOS and win21h2, both when using GTX 1060 / 2070c / 3080, and when using exclusively the iGPU processor 12600k from the motherboard output, but more noticable in white area

2) I tried also 8 bit 165hz 2k xiaomi monitor from another machine in 6/8/10bit with / without dithering

3) I tried different BIOS versions ( from 1620 to 2003, then finally update it to 3210 )

4) I tried old (466.63) and new (552.44) nvidia drivers, limited or full color range, turn off all dithering using ColorControl (nvidia) and Ditherig (Intel iGPU) apps

5) Pixel dithering patterns ( 4 repeating patterns every 15hz in 60hz monitor: vertical, horisontal, vertical, smooth & defocus ) are same in z390 / z690, recorded with benq monitor in 60fps, reduce playback speed to see it clearly ( I have synched it in video ) -> https://filetransfer.io/data-package/GaHolmgv

The motherboard shouldn't affect the picture, but it does: made it brighter and sharper. When I got back my old PC and same monitor, in few days symthoms are gone, and return when I sit at new motherboard again. When I upgraded to z390 motherboard in 2020 year from z370 + 8700 with same monitor, there were no problems

A) How to fix this problem, is it fixable, or hardware problem?

B) I am not first who talked about it, this guys talked about z490 ( LGA 1200 changes compared for old motherboards )

https://www.reddit.com/r/buildapc/comments/r6500w/does_motherboardprocessor_impact_image_quality

https://ledstrain.org/d/998-hardware-experiments

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3 REPLIES 3

JohnAb
Level 17

I guess you must have reinstalled Windows after the upgrade? Did you also upgrade the GPU?

To me, it sounds like your Windows settings have changed, so have you adjusted those settings - like brightness, refresh rate, resolution, refresh frequency?

These can all be adjusted within Windows and then you also have the NVidia control panel with more settings. 

I understand that you say the symptoms are gone when you change the monitor, but unless the monitor has gone bad, I don't know what else to suggest. 

 

Z690 Hero, 12900K, BIOS 3603, MEI 2406.5.5.0, ME Firmware 16.1.30.2361, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.

manowar_gub
Level 7

I own ready, z390 PC and z690 PC (independed towers)

Each of them have same windows OS (same version / build) and stopped updates, nvidia drivers and their configs are same also

What I change between this 2 PC's is: mouse, keyboard, and monitor. Thats all. Also I tried 2nd monitor from 3rd PC and it also change nothing at all ( but strain feeling was another )

I installed 2070s graphics in new z690 build, old gtx1060, and rtx3080 from another (3rd) PC. It does nothing, I steel feel z690 produce "sharp" and some type of "clean" image. But my eyes got pain after watching this.

Is it changes for image rendering between z390 and newer versions? Some kind of pre-dithering, which affects all grapfic outputs ( internal motherboard output, external cards )...?

I really don't know, I've had no issues with Z690. Sorry I have nothing else to suggest 😑

Z690 Hero, 12900K, BIOS 3603, MEI 2406.5.5.0, ME Firmware 16.1.30.2361, 7000X Case, RM1000x PSU, ASUS TUF OC 3090TI, 2 x 16GB Corsair RAM @ 5200MHz, Windows 11 Pro 23H2, Corsair H150i Elite AIO, 4x Corsair RGB fans, 3x M.2 NVME drives, 2x SATA SSDs, 2x SATA HDs.