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NVIDIA GTX 1080 Ti Owner's Club - Page 832

post #8311 of 10838
Thread Starter 
Quote:
Originally Posted by nrpeyton View Post

Possible important info on Memory Overclocking.

I trust some of you have now been using OCCT to find max stable memory O/C, (which we found is great at finding a more precise, stable, upper memory O/C).

But one more thing to note of importance:

I believe there 'could be' different memory timings straps programmed into BIOS which are automatically activated depending on your memory O/C. (for instance a good comparison to this would be how DDR3/4 XMP profiles load optimised (looser) timings for higher speeds you select in motherboard BIOS).

Anyway these timings can affect your score when you're trying to find best memory O/C.

During the 1080 days (at the owners club over there) there was even a roomer circulating that odd overclocks scored higher than even overclock numbers or memory overclocks ending in 0's didn't score as well as those ending in 5. (I.E. +495/+605 always scored higher than +500/+600).

What is more likely to be the case is that: pre-optimised 'memory timings straps' are selected by BIOS depending on the O/C you enter.
For example; +250...lost FPS. But +240 and +255-+260 = gain.

And remember OCCT is still the best we have for testing memory O/C "stability". smile.gif

If anyone has anything to add, or any corrections (or different opinion), fire away :-) Would be good to see some 'memory overclocking' spirited discussion.

Here is the peep!! @nrpeyton Added this to OP with procedure.

Thank you!!

I got an amazing +723 stable on memory with this help.
    
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post #8312 of 10838
I compared GTX 1080Ti vs TITAN X Pascal 2016, clock vs clock and + 1000 on memory effective.

1080Ti @2012/12000
TITAN X Pascal @2012/11000

http://www.3dmark.com/compare/fs/12537346/fs/12536362

http://www.3dmark.com/compare/fs/12537379/fs/12536406

http://www.3dmark.com/compare/fs/12537309/fs/12536330

Nvidia claim "1080Ti is faster than TITAN X", nope is not faster. ONLY in stock vs stock, and this is cuase better temperatures on 1080Ti and higher core clock.

Maybe soon i will buy TITAN Xp and compare vs 1080Ti and TX Pascal clock vs clock. But performance gain is not worthy in real scenarios.

On GPU-Z screen, you can see memory bandtwich, pixel fillrate and texture fillrate.

Please dont look at clocks on 3d mark, it bugged as alwyas, same GPU and CPU smile.gif Boost on GPU-Z is too misleading, beacuse GPU-Boost 3.0 is very strange smile.gif

Cards works on same clocks, TX P even throttle more, form 2012 to 1974/1961-1923.

1080Ti stay on 1974 most time.

I am satisfied with change 2x 1080Ti for 2x TITAN X Pascal, now time to LC them smile.gif



post #8313 of 10838
Quote:
Originally Posted by KedarWolf View Post

Here is the peep!! @nrpeyton Added this to OP with procedure.

Thank you!!

I got an amazing +723 stable on memory with this help.

Thanks for the mention.

This means a lot to me :-)
Slightly 'moved' actually smile.gif


I had a look around to find the original posts; here they are: (they feature some additional detail for anyone interested in finding max memory overclock using OCCT)

original posts: (hope this helps)

Quote:
Originally Posted by nrpeyton View Post


How are you guys doing so far with memory overclocks?

My initial testing is this:

+565 = 14 errors within 30 seconds

+560 = 10 minute run 0 errors (completely stable) biggrin.gif

(In other words, with my memory overclocked to within a ball hair of its life at 560 I'm completely stable.. but even 1mhz more and things go wild lol).

/\ thats at a temp of approx. 60c (fan 100% and a power draw of 277w avg. + default clocks + volts)

+675 = crash
Quote:
Originally Posted by Slackaveli View Post

how are you testing for vram errors?? PLEASE?..
Quote:
Originally Posted by nrpeyton View Post

OCCT is perfect for this (if you carefully set it up).

It will allow you to test max memory overclock to within 5mhz with absolute precision.

The only varying factor you need worry about is varying temperatures which can / will affect results. Also try and lay in a max FPS limit that stimulates a real-world scenario power scenario (I.E. 285w draw)

Moreover 'shader complexity' should be set to 3.

Its method is simple but eloquent. It simply compares one frame to the last, any discrepancies = error.

Don't be put off by the fact the programme only *claims* to test 2GB. It doesn't matter, it tests that 2GB over all modules. It only means 2GB is loaded at any one time. However in recent versions this number is actually doubled. Making the test even better. (they just didn't update the GUI to say so) smile.gif

Also, nearly forgot; you can change the power draw in real time without restarting the test simply by dragging the OCCT render "window" bigger. Or reduce it by making the window smaller. (No need to restart the stress-test).

Edited by nrpeyton - 5/4/17 at 6:09pm
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post #8314 of 10838
Quote:
Originally Posted by GosuPl View Post

I compared GTX 1080Ti vs TITAN X Pascal 2016, clock vs clock and + 1000 on memory effective.

1080Ti @2012/12000
TITAN X Pascal @2012/11000

http://www.3dmark.com/compare/fs/12537346/fs/12536362

http://www.3dmark.com/compare/fs/12537379/fs/12536406

http://www.3dmark.com/compare/fs/12537309/fs/12536330

Nvidia claim "1080Ti is faster than TITAN X", nope is not faster. ONLY in stock vs stock, and this is cuase better temperatures on 1080Ti and higher core clock.

Maybe soon i will buy TITAN Xp and compare vs 1080Ti and TX Pascal clock vs clock. But performance gain is not worthy in real scenarios.

On GPU-Z screen, you can see memory bandtwich, pixel fillrate and texture fillrate.

Please dont look at clocks on 3d mark, it bugged as alwyas, same GPU and CPU smile.gif Boost on GPU-Z is too misleading, beacuse GPU-Boost 3.0 is very strange smile.gif

Cards works on same clocks, TX P even throttle more, form 2012 to 1974/1961-1923.

1080Ti stay on 1974 most time.

I am satisfied with change 2x 1080Ti for 2x TITAN X Pascal, now time to LC them smile.gif

I'm honestly not sure what you expected. It is the same GPU with just different clocks out of the box and 1GB of VRAM removed.
post #8315 of 10838
Quote:
Originally Posted by nrpeyton View Post

Anyone with a 1080 Ti Founders Edition waterblock (that you've not yet fitted) do me a quick favour please?

Put a measuring tape across your block like I have done in this picture below:





Then either post or PM me the photos please?

Thanks a million!
PM'd.
Edited by DerComissar - 5/4/17 at 6:12pm
    
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post #8316 of 10838
Quote:
Originally Posted by DerComissar View Post

PM'd.

+1 thanks ;-)
Edited by nrpeyton - 5/4/17 at 7:00pm
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post #8317 of 10838
Quote:
Originally Posted by MURDoctrine View Post

I'm honestly not sure what you expected. It is the same GPU with just different clocks out of the box and 1GB of VRAM removed.

No excatly SAME,

1080Ti have 88 ROPS and 352 bit memory bus
TX Pascal have 96 rops and 384 bit memory bus

+1000 memory effective on both (1080Ti 12000, TX P 11000) and TX P have still higher memory bandwitch.

Funny thing is, ppls sell TX P sometimes even cheaper than 1080Ti cost...mad.gif
post #8318 of 10838
Quote:
Originally Posted by nrpeyton View Post

+1 thanks ;-)

OCCT DX11 doesn't run on my platform for some reason unknown. I'd recommend to use EVGA oc scanner instead. https://www.evga.com/ocscanner/
post #8319 of 10838
Anyone else just had the little
"NVIDIA GeForce Game Ready Driver is available" popup?

Have to say; they're churning these updates out pretty fast ;-)
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post #8320 of 10838
Quote:
Originally Posted by Coopiklaani View Post

OCCT DX11 doesn't run on my platform for some reason unknown. I'd recommend to use EVGA oc scanner instead. https://www.evga.com/ocscanner/

Have you tried v. 4.4.2. ?

I'm on 64bit windows 10.
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