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What is my core clock?

post #1 of 8
Thread Starter 
I just got a Zotac Amp! 980ti, and I want to know accurately what the core clock is. However, between Afterburner, Furmark, and Heaven it shows a different core clock but shows the correct memory speed.

This is a comparison of Afterburner and Heaven (top right) at stock.
zotac1.JPG 135k .JPG file

This is with an offset of +150 and +250memory.
zotac2.JPG 130k .JPG file

So which one is correct?
post #2 of 8
The correct clock is the one shown by Afterburner. For some reason Heaven shows a higher clock for at least some cards, don't know if it happens for ALL GPUs.

EDIT: It shows the correct clock for me. EVGA GTX 980 SC @1556Mhz




I remember way back when, had an ASUS GTX 670 and it was showing a higher clock.
Edited by GetToTheChopaa - 5/3/17 at 1:53pm
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post #3 of 8
Thread Starter 
I was thinking Heaven was wrong, but that kind of sucks because my 970 was able to hit 1535mhz I'm disappointed in the AMP! I expected more. It won't go near 1500mhz and runs much more hot.
post #4 of 8
Thread Starter 
Quote:
Originally Posted by GetToTheChopaa View Post

The correct clock is the one shown by Afterburner. For some reason Heaven shows a higher clock for at least some cards, don't know if it happens for ALL GPUs.

EDIT: It shows the correct clock for me. EVGA GTX 980 SC @1556Mhz




I remember way back when, had an ASUS GTX 670 and it was showing a higher clock.

So do I just appear to have a gimped 980?
post #5 of 8
How far below 1500 is it and at what voltage?
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post #6 of 8
Thread Starter 
Quote:
Originally Posted by Cyro999 View Post

How far below 1500 is it and at what voltage?
I can only get it to about 1442mhz at +87mv and +203 offset
post #7 of 8
Some reports of issues here: https://www.reddit.com/r/nvidia/comments/46qo9z/avoid_zotac_amp_extreme_series_if_you_plan_on/
Quote:
While the fan issue is annoying, the next issue is what really gets my blood boiling as I haven't gotten a peep out of Zotac about it despite being in contact with their support for nearly 8 months now.

The basics of the issue is this: the 980 Ti AMP! Extreme does not actually conform to NVIDIAs standard overclocking methods like Zotac claims. Although voltage control has been put back in the hands of the user, Power control has not. Out of the box I noticed that my GPU would throttle because it was TDP limited. This seemed wrong for a companies top end model that uses 2 8-pin PCIe power connectors, but whatever. Knowing what I do about GPU overclocking, this is an easy fix. Even though I wasn't overclocking, I should easily have been able to adjust be power target limit in software like MSI Afterburner. I jumped in and tweaked the limit to 111% to fix the issue. Unfortunately, nothing changed. Additional testing revealed that this GPU ignores the limit set by software and has other power reporting issues that I won't go into here (I figure this post will be long enough).

After over 8 months of contact with their support, these are the only three responses I got (paraprhased):

1) This GPU ships with a 258W TDP which you should never reach and is more than enough (a lie - both of my test units hit this limit under some scenarios without any overclock).

2) We specifically conformed to NVIDIAs voltage control mechanisms for this GPU after people complained about the 980 model we released, but we can't guarantee overclocking settings and users are mistaken when they think that overvolti got will help their overclock. (Absolutely nothing in this response referenced the actual issue I had with power limit. I never asked anything about voltage)

3) We have already responded twice and won't respond again.

At this point I am forced to accept that they don't know how to design high end GPUs and refuse to admit as such. All I can do is let others know. This GPU is certainly very fast out of the box, but also does not conform to NVIDIAs standard toolset and cannot effectively be tweaked any further. In my case, I didn't even want to overclock, I just wanted to stop the card from throttling at its stock frequencies, but I could not accomplish that. I suggest you look at the other manufacturers for your high end needs.

That sounds like it could hold you in the low 1400's
Quote:
Something else that I should point out is that Steve at Gamers Nexus was unable to look into any issues that may have been lingering with the 980 Ti AMP Extreme design because (surprise surprise) Zotac stopped sending him review units after the article I linked.

And it looks like i'l be avoiding Zotac hardware.
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post #8 of 8
Thread Starter 
Thanks for the info! Yeah don't get me wrong it's a fast card but it refuses to overclock much and runs hot like mid 80'sC when at full load. Thank you for your help Cyro
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