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NVIDIA GTX 1080 Ti Owner's Club - Page 345

post #3441 of 10714
Quote:
Originally Posted by gkolarov View Post

Here is the BIOS file of ROG-STRIX-GTX1080TI-O11G-GAMING . If someone can extend the power limit and/or add a little more voltage smile.gif



1080ti_strix.zip 154k .zip file

This is a great help, thank-you!

I've pulled the info from the Strix 1080Ti OC BIOS and it has a 275w default TDP target, and 330w adjustment limit (+20%). Now everyone knows!

Still waiting anxiously for a sample from an MSI Armor or Gaming X card, or any of the Gigabyte ones smile.gif
post #3442 of 10714
Quote:
Originally Posted by kevindd992002 View Post

Now that's interesting.

@Mato87 and Slackaveli

Any thoughts on this behavior?
So the shunt mod completely zeroes out the reading of the power limit? I mean in theory it should (as you short out the resistor) but I thought it will just lower it down significantly below the real limit?
my thought would be that there is no information there. he could be very cpu bound with an average of "50%" gpu usage. Must see each and every thread to be able to tell. Also, he is getting 63% power out of one gpu and 45% power out of the other. Way too many variables for me, sorry.
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post #3443 of 10714
Thread Starter 
Quote:
Originally Posted by Asus11 View Post

Quote:
Originally Posted by KedarWolf View Post

I successfully flashed the Strix BIOS to my 1080 TI FE.

I'm getting 2100 core at 1.075v 6132 memory, Power Limit never goes over 111% an entire Heaven run, and as you can see by my GPU-Z file it never throttled or lowered core or voltages once the entire Heaven run, no shunt mod.

GPU-ZSensorLog.txt 35k .txt file

Here's how I did it biggrin.gif

nvflash_5.353.0.zip 3031k .zip file

1080ti_strix.zip 154k .zip file

Unzip NVFlash and the Strix bios to a folder.

Disable your video card in Control Panel in Device Manager.

Run an admin command prompt and cd to the folder you made.

Do in command prompt:

nvflash64 --protectoff.

Then do:

nvflash64 --save filename.rom

to backup original bios.


nvflash64 -6 biosfilename.rom



Reboot, if the card is not enabled in Device Manager, enable it, reboot again. Good idea to reinstall Nvidia driver, reboot last time, done.

For more than one card.

nvflash64 --list

nvflash64 -6 --index=0 BIOSfilename.rom

nvflash64 -6 --index=1 BIOSfilename.rom

Choose yes when asked to override mismatched IDs.


me and a few people was the first to flash the STRIX bios to the 1080 FE

what we found out was we could get higher boost... but performance was not on par of the FE at lower clocks

I think the STRIX shows higher clocks but is weaker.. test it out.. put 2k on the FE bios run a benchmack and then go run STRIX bios at 2k and report back wink.gif

My best TimeSpy before Strix BIOS was 10808, below with Strix BIOS at 2100 core, 6162 memory Score with Strix BIOS 10876 biggrin.gif

    
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post #3444 of 10714
Quote:
Originally Posted by KedarWolf View Post

i can't answer that but I'm getting 2100 core at 1.075v 6132 memory, Power Limit never goes over 111% an entire Heaven run, and as you can see by my GPU-Z file it never throttled or lowered core or voltages once the entire Heaven run.

GPU-ZSensorLog.txt 35k .txt file
well, sir, mission accomplished. And you are the ONLY one with as pretty of a "2100Mhz verification file" as that one! You are the boss, dude.
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post #3445 of 10714
Quote:
Originally Posted by KedarWolf View Post

I successfully flashed the Strix BIOS to my 1080 TI FE.

I'm getting 2100 core at 1.075v 6132 memory, Power Limit never goes over 111% an entire Heaven run, and as you can see by my GPU-Z file it never throttled or lowered core or voltages once the entire Heaven run, no shunt mod.

GPU-ZSensorLog.txt 35k .txt file

Here's how I did it biggrin.gif

nvflash_5.353.0.zip 3031k .zip file

1080ti_strix.zip 154k .zip file

Unzip NVFlash and the Strix bios to a folder.

Disable your video card in Control Panel in Device Manager.

Run an admin command prompt and cd to the folder you made.

Do in command prompt:

nvflash64 --protectoff.

Then do:

nvflash64 --save filename.rom

to backup original bios.


nvflash64 -6 biosfilename.rom



Reboot, if the card is not enabled in Device Manager, enable it, reboot again. Good idea to reinstall Nvidia driver, reboot last time, done.

For more than one card.

nvflash64 --list

nvflash64 -6 --index=0 BIOSfilename.rom

nvflash64 -6 --index=1 BIOSfilename.rom

Choose yes when asked to override mismatched IDs.

Let me know how your testing goes! See if you can do 2114 Mhz without power throttling!

Are you hitting 1.092V consistently now? And also, can we backup our BIOs and reflash it for RMA purposes? Thanks for testing this out and being brave!
post #3446 of 10714
Thread Starter 
Quote:
Originally Posted by ThingyNess View Post

Quote:
Originally Posted by KedarWolf View Post

I successfully flashed the Strix BIOS to my 1080 TI FE.

I'm getting 2100 core at 1.075v 6132 memory, Power Limit never goes over 111% an entire Heaven run, and as you can see by my GPU-Z file it never throttled or lowered core or voltages once the entire Heaven run, no shunt mod.

Be careful with this one - there is a genuine risk of overloading a couple of the VRM phases on the FE card by using the Strix BIOS as it has 2x 8-pin connectors and the current split between the phases is going to be very different.

In the FE BIOS the allowable limits with the adjustment slider maxed are:

78W from the PCIe slot, 99W from the 6-pin PCIe connector, and 175W from the 8-pin PCIe connector.

It's tough to tell how they partitioned the VRMs on the FE since I don't have one in hand, but if it were me, I'd probably power one phase from the PCIe slot, two from the 6-pin, and 4 from the 8-pin PCIe connectors.

However, the Strix 1080Ti (and most of the aftermarket cards) have 2x 8-pin PCIe connectors, and allows 78w from the PCIe slot and 175w from each of the two PCIe connectors.

If the FE card did partition the VRMs such that there's double the phases assigned the 8-pin versus the 6-pin connector, then using the Strix 1080Ti BIOS might mean that you're underloading the 4 phases assigned to the 8-pin PCIe connector and heavily overloading the (2?) phases assigned to the 6-pin.

It might be worth pulling the backplate and using an infrared temp gun and seeing if any of the VRM MOSFETS are at a very different temperature versus the others. Out of the box with the stock BIOS they should be pretty well balanced.

My Corsair AX1500i can log the power going to each pci-e power connector. I have separate cables on my six and eight pin, doing that now. smile.gif
    
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post #3447 of 10714
Quote:
Originally Posted by ThingyNess View Post

Be careful with this one - there is a genuine risk of overloading a couple of the VRM phases on the FE card by using the Strix BIOS as it has 2x 8-pin connectors and the current split between the phases is going to be very different.

In the FE BIOS the allowable limits with the adjustment slider maxed are:

78W from the PCIe slot, 99W from the 6-pin PCIe connector, and 175W from the 8-pin PCIe connector.

It's tough to tell how they partitioned the VRMs on the FE since I don't have one in hand, but if it were me, I'd probably power one phase from the PCIe slot, two from the 6-pin, and 4 from the 8-pin PCIe connectors.

However, the Strix 1080Ti (and most of the aftermarket cards) have 2x 8-pin PCIe connectors, and allows 78w from the PCIe slot and 175w from each of the two PCIe connectors.

If the FE card did partition the VRMs such that there's double the phases assigned the 8-pin versus the 6-pin connector, then using the Strix 1080Ti BIOS might mean that you're underloading the 4 phases assigned to the 8-pin PCIe connector and heavily overloading the (2?) phases assigned to the 6-pin.

It might be worth pulling the backplate and using an infrared temp gun and seeing if any of the VRM MOSFETS are at a very different temperature versus the others. Out of the box with the stock BIOS they should be pretty well balanced.
beat me to it. i was going to say the idiot version of this so kudos on the great explanation.

@KedarWolf dang, that is a dope psu bro.
Edited by Slackaveli - 4/3/17 at 5:48pm
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post #3448 of 10714
I forgot about that. My RM1000i PSU can also do that.
post #3449 of 10714
Quote:
Originally Posted by KedarWolf View Post

My Corsair AX1500i can log the power going to each pci-e power connector. I have separate cables on my six and eight pin, doing that now. smile.gif

Also great news - at least that way you can try with each BIOS and have a before/after comparison. smile.gif

I actually am downgrading my previous dire warning to a gentle 'caution' - I took a closer look at the datasheet for the uP9511p phase controller that Nvidia used on the FE cards, and it doesn't look like it supports any sort of modification of phase balancing in software - all of the current limits and sensing are all programmed physically with resistors on the board.

AMD had this capability with the controller they used on their RX480 boards and were able to have it draw less power from the motherboard slot with a BIOS flash, which is why I was a little worried.

My only other worry was that perhaps they changed the current sense resistors from the FE to the Strix board, but I double checked and both boards use 5 milliohm resistors to sense the current for all 3 power sources, so we're good there too.
post #3450 of 10714
Quote:
Originally Posted by ThingyNess View Post

Also great news - at least that way you can try with each BIOS and have a before/after comparison. smile.gif

I actually am downgrading my previous dire warning to a gentle 'caution' - I took a closer look at the datasheet for the uP9511p phase controller that Nvidia used on the FE cards, and it doesn't look like it supports any sort of modification of phase balancing in software - all of the current limits and sensing are all programmed physically with resistors on the board.

AMD had this capability with the controller they used on their RX480 boards and were able to have it draw less power from the motherboard slot with a BIOS flash, which is why I was a little worried.

My only other worry was that perhaps they changed the current sense resistors from the FE to the Strix board, but I double checked and both boards use 5 milliohm resistors to sense the current for all 3 power sources, so we're good there too.

The gamersnexus breakdown of the FE PCB suggested the VRM was fairly well overbuilt, even if you were going to try and pull 400A through the GPU core VRM, you'd be looking at about 40W of heat to deal with, so I suspect each phase indiviudally has significant headroom.

https://www.youtube.com/watch?v=dSCNf9DIBGE

Analysis of the PCIE power draw will certainly be interesting.
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