"Are these new screens really G-sync Ultimate?
The current information, user guide information on Dell.com and the early press release for the new displays suggests that the screens will feature the coveted
“G-sync Ultimate” certification. There seems to be a distinction with these model and others in the Alienware range that are listed specifically as “G-sync Compatible”. We know that those other models use VESA adaptive-sync to support VRR from both AMD and NVIDIA systems, but is there something different going on here with the AW2721D and AW3821DW? Have they really earned the ‘G-sync Ultimate’ badge and what does this mean?
At first it looked like the new AW2721D and AW3821DW must surely feature a hardware Native G-sync module which is, in our understanding, necessary for this certification level. Now we have more specs and info, we are not so sure. Even if they did feature a Native G-sync module it is also still likely that they could still support AMD systems via
the latest NVIDIA firmware, but with the module being used this could bring about benefits in terms of VRR performance and features like variable overdrive and super low input lag.
We also understood that G-sync Ultimate requires the current v2 G-sync module, which is logical as that would be needed anyway to offer DisplayPort 1.4 and support the bandwidth necessary for the high resolutions at 240Hz/144Hz refresh rates respectively.
However the use of this certification badge has caused some confusion with consumers, and with ourselves to be honest. NVIDIA also now list both these models on
their G-sync page as “G-sync Ultimate” which further strengthens the view that these will indeed carry that certification. However, something doesn’t add up here!
As well as needing to use the G-sync hardware module,
NVIDIA list on their own website that the current requirements for that certification also require the inclusion of ULMB for motion blur reduction, and support for HDR, but to the HDR 1000 level. So far this has been used for the top end FALD backlit screens as well, so for truly top end LCD HDR performance.
Having scoured the information that is currently available we do know that these new models would feature the lower HDR 600 certification (only needing edge lit local dimming and a lower peak brightness) so either NVIDIA are going to relax their “Ultimate” certification a fair bit, or maybe these won’t truly reach that coveted G-sync Ultimate certification after all. We also cannot see any mention in the user guides and manuals of any ULMB/blur reduction mode, so that’s not included it seems (certainly not on the AW3821DW anyway). Finally, the provided connections on the screen go beyond the current capabilities of the hardware G-sync module v2 as well! That module can support 1x DisplayPort 1.4 and 1x HDMI 2.0 only, but these new screens have a second HDMI 2.0 port as well. So it looks like the screens might not even feature a Native hardware G-sync module. It’s really not clear."
One thing I have found in the specs is that the monitor is ( unfortunately ) edge lit.