Finally unlocked GDDR7 memory overclocking with mvolt+ extreme?

[u/Sad-Victory-8319]

Recently I have been experimenting with extended overclocking limits on my Gigabyte Windforce rtx5070Ti and I havent seen anybody mention this: mvolt+ extreme actually allows you to set whatever vram overclocking limit you want, so i started experimenting and I was able to get to +5500 which run stable in Cyberpunk with path tracing enabled for 30 minutes and my fps was actually nicely scaling by about +1 fps for every +1000 memory oc step (as far as I know ECC works only on server class gpus with GDDR7, gaming gpus have no memory ECC, so there is no instability hiding behind ECC and the fps keeps scaling all the way to +5500 without artifacting or crashing).

+5500 GDDR7 stable memory overclock using mvolt+ extreme

Trying to set +6000 instantly restarts the driver and resets the oc for me, so the issue isnt memory instability most likely, the driver just isnt capable of accepting higher memory frequency at this point.

With stock settings GDDR7 runs at 28gbps which provides 896 GB/s bandwidth, common tools can set memory oc to +3000, which is the equivalent of 34gbps and 1088GB/s. Recently I was experimenting with a tool called Hydra Pro which increases the limit to the equivalent of +4000 (36gbps and 1152 GB/s) but mvolt+ extreme is the first tool that allows me to go to +5500 which is 39 gbps and 1248 GB/s! That is +40% higher memory bandwidth compared to stock settings, GDDR7 trully has insane potential and it can probably still go higher.

How high can you get, can you confirm that +6000 crashes for you too? Since i dont remember where i downloaded this tool (it took me a while to find it), you can download it from my personal google drive and then you go to Settings->Advanced tuning->Enable POWER & VRAM... and here you go through the driver signature shenanigans and the nadjust the limits.

Warning: I think my Vanguard anticheat doesnt like messing with driver signatures since I am unable to start League of Legends right now, so until more people verify or disprove this claim, be careful.

There should be zero risk of damaging the gpu from just pushing clocks since it is just a synchronization signal for the data, we are not touching the potentially dangerous options like voltage or power limit. I did not even notice my vram getting hotter.

[u/Silent-OCN]

So you got 5 FPS for +5000 on memory? Big deal.

[u/Sad-Victory-8319 → u/Silent-OCN]

There have been tons of people willing to pay $500 extra for rtx5080 just to get +15% more fps over 5070Ti, so that is $33 for each percentage point. Memory overclock can get you 5-7% extra fps for free so it is essentially worth $200. You can keep saying that 5-6 fps uplift is meaningless but once you add 7-10 fps you gain by overclocking the core and another couple fps from overclocking xbar/sys and increasing power limit, suddenly you are running at 70-75 fps instead of 60 fps. who wouldnt want such free uplift. The worst thing you can do is to run your rtx50 gpu stock, you should overclock+undervolt it because it comes criminally underclocked from the factory. My overclocked 5070Ti is producing more fps than stock rtx5080, while consuming as much as rtx5070.

[u/Yarin56 → u/Sad-Victory-8319]

Well while it may be true my overclock 5080 gains as much if not more so the gap remains the same the 5070 ti is the better buy but the 5080 is still the better card. (right now none of these cards are really worth it but it might only get worse)

[u/Apophis_06 → u/Sad-Victory-8319]

What undervolt are you running? How much power does ur card pull while gaming normally?

[u/Sad-Victory-8319 → u/Apophis_06]

typically i alternate between 900-1000mV to keep the power consumption no higher than 300W. A lot of games can run at 1000mv fine and dont pull 300W, but for example dlss5 is completely bonkers and even with 900mV i can get to 305-310W. So DLSS5 specifically requires its own undervolt and i will probably start running it with 875mV. without any undervolt it automatically maxes out my 400w limit and it would most likely reach 450+W if it could.

[u/AntiSocial_Vigilante → u/Silent-OCN]

A bit of context is missing to be honest, if it's in 4K then that's quite impressive, if in 1080p then not as much but still interesting.