Nvidia Gddr6x silent nerf?

[Damocles Ti]

If I recall correctly, since October 2021's driver update combined with the latest vBios from your manufacturer, the Memory speed 19Gbps at a clock of 9500Mhz has been silently nerfed. I tried googling and resolving my issue but even DDU didn't fix it. The issue is no matter what I do, the memory will always do 9250Mhz at stock. When overclocked, it will always have this mysterious negative 250Mhz offset. Reinstalling the driver will temporarily fix the issue until your next non-fast boot restart. A fix I've been using till now is just to add another 250Mhz into my overclock. GPU-Z shows that my overclock targets 10750Mhz for an actual clock of 10500 in games. One google answer is: "It doesn't matter, barely a difference" but I would argue that it's an issue when the base Advertised specs say 9500Mhz, and they deliver 9250Mhz. Now I've asked around and it's either small pockets of isolated issues, or not everyone is tech savvy enough to check.

The cause of the problem seems to be driver or vBios related. My card is the Strix Oc 3080 Ti with the latest vBios and driver. When using NvidiaInspector, it seems to be related to the P2 power state being triggered instead of P0. For unknown reasons, you cannot simply fix the P2 state as it automagically applies a 250Mhz negative offset compared to P0 which is the actual target memory speed it should have been applying. This leads me to suspect that my P0 state is simply unreachable, but also that I'm not alone in this issue and that the 250Mhz offset has been found by a few other users on the internet.

 

One theory I have is that Nvidia implemented their LHR incorrectly and it is affecting the base operation of their cards. Another one is that due to a supply shortage of these cards, they're unwilling to handle RMAs and would like to lower the rate of RMAs via artificial limits to decrease the rate of failure.

I would like to ask anyone with 3070 Ti or higher (using GDDR6X) to:

1. check their speeds in game and post if you also have this issue or not
2. confirm you're running latest vBios and drivers?
3. Are you stock/overclocking?
4. What your PC specs are

 

My specs are:

Windows 10 Pro 64bit build 19043
AMD 5950X PBO
4x8Gb DDR4 3800 Cl16 @Fclock 1900
X570 Dark Hero Motherboard Bios 3904
Asus Strix OC 3080 Ti Bios 94.02.71.00.49, Driver 511.79

Target Memory Clock 10750, actual 10500
Resizable bar enabled

[porina]

Have you tried setting "prefer maximum performance" in nvidia control panel "power management mode"?

 

I don't have applicable hardware to look further myself.

[Damocles Ti]

25 minutes ago, porina said:

Have you tried setting "prefer maximum performance" in nvidia control panel "power management mode"?

 

I don't have applicable hardware to look further myself.

Not the same. That toggle just tries to save power when in desktop or light load. The only benefit to turning that on high performance is to make the GPU more consistent when assets load in and it tries to clock down during that downtime. That power saving feature didn't affect the 250Mhz offset.

[Damocles Ti]

I found my answer: turns out you need to download the newest version of Invidiaprofileinspector off of github, then disable Cuda Force P2. Apparently it's the make certain Cuda workloads more stable and not supposed to effect games, but it's just hard stuck on. Silent nerf confirmed.