980ti not overclocking too well

[Curufinwe_wins]

@Lays on my card as a great example of 275W being a power limitation, I have actually my voltage drop from 1.224 all the way to 1.14 under full load (for moments) due to power limit issues, indeed this more than anything else, was instabilities I saw occurring past 1514 right when Vin dropped due to power limit.

[Lays]

@Lays on my card as a great example of 275W being a power limitation, I have actually my voltage drop from 1.224 all the way to 1.14 under full load (for moments) due to power limit issues, indeed this more than anything else, was instabilities I saw occurring past 1514 right when Vin dropped due to power limit.

 

 

#Moddatbios

[Curufinwe_wins]

#Moddatbios

Yea... But its a single bios card... And I probably would only get 10 Mhz out of it at 1440p (which is what I game at).

 

I actually have a run of almost pure combined 1519 Mhz, but at 1080p I crash unless I turn down by base clock by 10 or so Mhz. (I did check it isn't memory overclock related, but that is a separate issue to need to turn down as well) . I'm going to include some pictures of the core clock during the first test. You can practically see the power limit throttling.

 

Speaking of lols... So I mentioned that the EVGA Hybrid caps out at 1.224 V? So does my card. What I never stopped to think about was stock voltage for my card (and apparently this is actually supposed to be that way) is ~1.19 V. I did check and confirm that going from +35 mV is stable everywhere +87 mV is stable. I'm about to run at 0 mV to see what happens now (I did old testing, but now that I've recently checked it'd be nice to go back and see what happens.).

 

So something that may interest the OP if it is applicable. I ran my test suite at the exact same offsets as I did with +87 mV, and while in every case it also passed, the max boost clocks were dramatically lower (about 27-39 Mhz lower on average). Temps were not much changed at all, but it is only .03 V difference. I didn't try increasing offsets to counteract this change, but it is something interesting I noted that I guess makes sense if V-limit was being hit the whole time (since gpu boost 2.0 does some weird shit with core clocks) .

 

 

Example of dramatic power target throttling I was talking about:

See graphics test 1 clock speeds in both Ultra and Extreme (note with T-max on both being sub 70C, thermal down-boosting is not a factor here):

[Ez2Tan]

I was able to achieve 1395 at voltage with +79 Mhz. At 110% power + 87 core voltage at 1.23v I hit 1409 @ +68Mhz. Usually when I am creeping through the Mhz, I start to see artifacts on my previous GPU's. But with this GPU, it goes directly into a driver crash. 

[Curufinwe_wins]

I was able to achieve 1395 at voltage with +79 Mhz. At 110% power + 87 core voltage at 1.23v I hit 1409 @ +68Mhz. Usually when I am creeping through the Mhz, I start to see artifacts on my previous GPU's. But with this GPU, it goes directly into a driver crash. 

I rarely see artifacting with gm200, it basically just crashes if there is an issue.

 

What is your core offset, because even +130 should be netting you into the 1480 range for max boost? Also what are you using to test it and can post a screenshot with core clock overlay as it is mid-test?

[Lethal Seraph]

A) Bullshit. B) the evga hybrid is a reference card with reference power limits. It isn't comparable to custom cards.

We'll that's even worst then. I would have expected more from a water-cooled gpu.

Yeah my OCCT test says otherwise. Glhf!

[Ez2Tan]

Is this what you are asking for?

 

baseline

 

Max voltage

 

+65

[Curufinwe_wins]

Is this what you are asking for?

 

 

Kinda, but instead open that hardware montor in settings to show current clocks.

 

Example:

 

(sorry about color, I had to compress the image a lot.)

 

See how you can see core clock in this case is sitting at 1507? (you can also see I'm at power limit for the most part)

 

If anyone is wondering those spikes in usage were from me trying to resize the 4k windowed version to fit my 1440p screen. I don't often run with windowed because a) OSD works if I need it, and B) 3dmark properly records gpu clock during benchmarking runs.  This was just the combined 4k test on loop.

 

Finally don't worry that my core clock offset seems so large. I have an LE version whose stock bios starts at like 1013 Mhz...

[Ez2Tan]

At 1406 core clock, it's still unstable.