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NVIDIA GTX 1080 Ti Owner's Club - Page 578

post #5771 of 10828
It has more than 330w for sure...never measured it.
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post #5772 of 10828
Quote:
Originally Posted by KedarWolf View Post

Yes, using it on my FE. smile.gif
That BIOS max Power 375W with 8+8pin. But the FE version 300W with 8+6pin. What will cause damage to the card?
post #5773 of 10828
Quote:
Originally Posted by DStealth View Post

It has more than 330w for sure...never measured it.

Did you leave the power slider maxed out? Because that gives 400+ Watts on a FE. I can't imagine what's it would give to a partner card.
post #5774 of 10828
Quote:
Originally Posted by error-id10t View Post

Sorry guys haven't kept up, need a card since I sold my 970s.. well two odd years ago I think. Which TI should I grab, suggestions..?

The cards are almost the same comes down to silicon lottery personally I would base my choice on aesthetics then price over brand
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post #5775 of 10828
Quote:
Originally Posted by SlimJ87D View Post

You had a msi GTX 1080 Ti gaming x right? And you shunt modded it?

Did you ever measure how much watts it was drawing? Do you think you just drew too much? Doesn't your card already have access to 330 watts?

330W wasn't probably why that component burned, i think the shunt mod messed up something else on the pcb, some other voltage and that's why it burned, maybe if he did the mod the other way arround by modding the caps with 10ohm resistors then it would have been running fine. The VRM on MSI Gaming X as on any other 1080 Ti can handle no problem 400W or more.
post #5776 of 10828
So I "grew a pair" as I was instructed, and flashed the Gigabyte extreme gaming vbios on my MSI Armor OC's, but even though everything appeared to be good, it shows power as the perfcap, even at stock, and the GPU clock stays mostly below 1000mhz. So that would be a no go. The Armor already has a 330w TDP (280@118%) but I was hoping to get the 375w cap, as even with the 330w, I still can hit a power perfcap.

Someone needs to unlock this vbios.
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post #5777 of 10828
Quote:
Originally Posted by OneCosmic View Post

330W wasn't probably why that component burned, i think the shunt mod messed up something else on the pcb, some other voltage and that's why it burned, maybe if he did the mod the other way arround by modding the caps with 10ohm resistors then it would have been running fine. The VRM on MSI Gaming X as on any other 1080 Ti can handle no problem 400W or more.

He said he shunt all 3 resistors too so that's opening even more power although like you said, the area that burned out is from the pins.

Pretty scary stuff. I'm going to shunt mod my card today. Don't have the soldering skills to do the resistor mod. But I'm going to start by limiting power draw at 75% and working my way up using my power supply to read how much current is being drawn.

Total system power draw previously was 410 watts max so if it goes to 460 I'll keeping the slider there.

I'm not sure if I'll be able to use the nvidia power command since the shunt mod might throw its reading off.
Edited by SlimJ87D - 4/17/17 at 6:09am
post #5778 of 10828
Quote:
Originally Posted by ttnuagmada View Post

So I "grew a pair" as I was instructed, and flashed the Gigabyte extreme gaming vbios on my MSI Armor OC's, but even though everything appeared to be good, it shows power as the perfcap, even at stock, and the GPU clock stays mostly below 1000mhz. So that would be a no go. The Armor already has a 330w TDP (280@118%) but I was hoping to get the 375w cap, as even with the 330w, I still can hit a power perfcap.

Someone needs to unlock this vbios.

Yeah, maybe we can start a community fund to motivate programmers to unlocking the bios.
post #5779 of 10828
Quote:
Originally Posted by SlimJ87D View Post

He said he shunt all 3 resistors too so that's opening even more power although like you said, the area that burned out is from the pins.

Pretty scary stuff. I'm going to shunt mod my card today. Don't have the soldering skills to do the resistor mod. But I'm going to start by limiting power draw at 75% and working my way up using my power supply to read how much current is being drawn.

Total system power draw previously was 410 watts max so if it goes to 460 I'll keeping the slider there.

I'm not sure if I'll be able to use the nvidia power command since the shunt mod might throw its reading off.

What is the resistor mod? Security for the shunt?
There is so much stuff but nothing on the first page frown.gif
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post #5780 of 10828
Quote:
Originally Posted by zipeldiablo View Post

What is the resistor mod? Security for the shunt?
There is so much stuff but nothing on the first page frown.gif

TLDR its a hard mod to increase the power limit

NVIDIA uses a set of 3 low resistance SM components to regulate the power draw across the 3 rails. It does this by measuring the voltage drop accross the 5MO resistor (1 for every power rail, thats 2 8/6 pin units and 1 PCIe regulator) in conjunction with a voltagee regulator chip.

What people are doing is reducing the resistance of these SMs by introducing a parallel electrical path also with a nominal resistance thus "fooling" the regulator in to thinking a lot less power is being drawn than actually is. This is achieved with spreading Liquid metal to act as this bridge, this is the most consistent result that also has some degree of reversibility in case of RMT.

However, the regulator chip has a failsafe mode in the case that any of the 3 rails show zero resistance (i.e. you shorted it with solder) then it forces the GPU in to "Safe" mode with 100mhz iirc locked.
Edited by Dasboogieman - 4/17/17 at 6:25am
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