MPaz As I understand, even though I connected my current monitor directly to Nvidia GPU, it still might use Intel iGPU for some tasks? And monitor with G-sync could avoid iGPU entirely?
Ah no, this isn't correct - if you're on a desktop machine and are connected directly to the discrete GPU (ie your 3090) then the Intel graphics on the processor will by bypassed entirely. Only if you were to connect to the HDMI output of your motherboard would the Intel graphics come into play.
In fact, if you go to device manager you shouldn't even see the Intel graphics listed - if they are showing then you can normally disable onboard graphics in the BIOS for peace of mind. :]
The confusion comes with laptop GPUs. On a laptop with an integrated GPU + discrete GPU, if additional horsepower is needed (for games / video editing etc) then the discrete GPU kicks into gear. However, every frame that the dGPU renders is passed to the integrated GPU to actually display it on the screen. So the iGPU is the one that has to work for you.
So in your circumstance, using a G-Sync monitor will only allow you to use variable refresh rates when gaming. But what we're hoping is that the actual hardware in a G-Sync product may eliminate the need for dithering / flickering that causes a lot of us issues.
On a G-Sync laptop, you can enable a hardware switch (MUX) which connects the display directly to the dGPU, bypassing the iGPU altogether, hence if (like me) you have a particular problem with iGPU drivers / hardware, then you can bypass it altogether for a working setup.
Our issues seem to come from bad combinations of:
- the software you're running
All of these can impact whatever 'flickering' it is that triggers your symptoms. So it's necessary to find the right combination that works for each individual. I'm curious as to whether I just struck it lucky with the HP Omen I bought and the planets aligned to make a usable machine, or whether G-Sync hardware communicates in such a way that it always eliminates the issues. Certainly, @highradio had the same results from his G-Sync machine which kicked off this new avenue to explore.
Let's keep fingers crossed for the latter. Not holding my breath though... 😉