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GTX 1070/1080/TITAN X(2ND GEN) BIOS - Who has it? - Page 10  

post #91 of 600
Thread Starter 
Quote:
Originally Posted by RGSPro View Post

Basically you just want the bios that has the highest power target in order to get the best overclocking, right? What BIOSes have been compared yet? Will all reference boards take each other's BIOSes?

I hate being the bearer of bad news...

The BIOS' with higher PWR and TDP are the cards with more than just an 8-pin... those cannot be flashed, forget those so we are obviously talking about apple/apple BIOS comparisons.

Unfortunately the BIOS with the highest power% slider does NOT directly correspond to the maximum power defined in the BIOS. IE: When we can mod the BIOS, I could have the slider max out at 125% @ 250W or 300W and they both would read 125%... this is just an example, bottom line is that until we can read the BIOS values it will be extremely difficult to determine which BIOS has a higher power limit defined per rail.

Lack of GPU power is going to potentially prevent higher boosts and throttle the GPU boost speed down during condition where there is insufficient power to maintain the given workload.
Unfortunately even 10x0's with (2) PCI-e 8-pin connectors also generate PWR perfcaps. There's no way to avoid them without the shunt mod (I don't know if it works for Pascal, I would not recommend this) or to modify the BIOS which we cannot currently do. I am willing to bet any money that Pascal cards with a SINGLE 8-pin PCI-e are going to be power limited even when we can MOD the BIOS and allow maximum power (200W-250W + 75W PCI-e slot is max with MOD). I am willing to bet any money that (2) 8-pin PCI-e connectors with a MOD BIOS will completely satisfy power draw and PWR perfcaps could be eliminated. We don't know if an 8+6 would be enough yet....it's borderline IMO...
post #92 of 600
Thread Starter 
Quote:
Originally Posted by Outcasst View Post

So guys... call me crazy, but I just flashed a completely none reference BIOS to the 1080 FE. I flashed the Inno 3D X3 1080 BIOS from this post

http://www.overclock.net/t/1601288/official-nvidia-gtx-1080-owners-club/1800_100#post_25298863


... And it works absolutely fine, apart from the max fan RPM being 1550 so there's no chance I'm going to try it under load.

Edit:
Just flashed the MSI Gaming X BIOS, also working fine. Max fan RPM of 2500

Also just flashed ASUS Strix OC BIOS, working fine. Max fan RPM of 3640.

You are very brave! Here's the "under the hood" basics...


(1) A reference design GPU is going to be using the exact same PCB and cooler design. For this reason it allows all of the reference BIOS' released by other manufacturers to be compatible... because they are going to basically be the same with a different branding. As far as how much variation NVIDIA allows in reference design cards I don't know for sure by my guess is that they are all going to be essentially the SAME... again, they have the same PCB, same design, same cooler, same power delivery.

(2) A custom PCB is not restricted to the reference design (obviously) therefore the power delivery, voltage regulator, voltage controller, mosfets etc. WILL consist of very different designs, components and even different memory brands. Other than the improved cooler on a custom PCB, the power delivery is going to be the next most obvious "major" difference noticeable. If there is a 2nd PCI-e power connectory (either 6 or 8-pin) you know right away it is using a different BIOS. A BIOS that has defined values for a power connector that doesn't physically exist on a reference GPU. Flashing a BIOS designed for (2) PCI-e connectors is not only going to be a risk as the physical connector doesn't exist, but it is ALSO going to raise the total power and TDP to values that the GPU cannot achieve. It's impossible to draw the power it expects to be there. Then we've got fans and as you can see, different fans require different voltages for different speeds. The fans are not compatible and do not use the same voltage/wattage. Lastly if the memory is not the same brand it's possible that memory timings and memory voltage would be incorrect for that type of memory... the list goes on as the technical details (differences) are examined..

I would scratch one of your 9-lives off the list tongue.gif
I'm glad you didn't brick it.

Unfortunately flashing another reference BIOS is the only safe option IMO and until they come out with a "super overclocked" reference GPU, I wouldn't get your hopes up to get any benefit from flashing another vendors reference BIOS. NVIDIA has some pretty strict rules when it comes to reference cards... It's the exact reason there are NO CUSTOM Titan-X cards... it's locked down to NVIDIA specs like reference cards are.
post #93 of 600
did the same and the power limit is odd. it looks like is reading from one power line and reporting as it is thats why its showing lower power limiter. Plus it only goes to %113...

I try it out but perf is not on par to the clocks im seeing, First time i see red dots on the screen on this card instead of just a instant crash so is a good indication...
Edited by zGunBLADEz - 6/28/16 at 3:14pm
post #94 of 600
Quote:
Originally Posted by Laithan View Post

I would scratch one of your 9-lives off the list tongue.gif

Aha! 8 More experiments to go biggrin.gif
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post #95 of 600
Quote:
Originally Posted by BTCHSLP View Post

But I see ... my fan is not running biggrin.gif
Yeah it is funny that that's a selling point of the card: Zero RPM! So the fan doesn't even start spinning until 60C.

However, Pascal cards' voltage limit, and consequently boost clock, is directly proportional to temperature. So it's actually a pretty silly thing to do as the performance is hamstrung right out of the gate by idling at the first throttle point before any game is even launched.
Edited by CapnBry - 6/28/16 at 3:51pm
post #96 of 600
The power limit of my card keeps bouncing like crazy..

post #97 of 600
Quote:
Originally Posted by Laithan View Post

I am willing to bet any money that Pascal cards with a SINGLE 8-pin PCI-e are going to be power limited even when we can MOD the BIOS and allow maximum power (200W-250W + 75W PCI-e slot is max with MOD).

Then Sir you should not gamble.

Already ran my FE 1080 at ~340W measured on the 12V rail without hardware mod but have some other issues causing benches to score lower than they should. Tried to get some help asking people to run Furmark bench for comparison but nobody so kind of stuck having to work things out myself it seems. Still get small temperature related clock drops but perhaps not unexpected when the card shoots up to 85C with 100% fan in the one minute P1080 bench.

http://www.ozone3d.net/gpudb/score.php?which=274036

Unfortunately away from home and my 1080 to continue but I think things like power values are very easy to read in the BIOS. They are in milliWatts, take the 1070SC image that was recently posted as an example, 75W, 151W and 170W.
Code:
  Min   0x2ddae   75000mW
 100%   0x2ddb2   151000mW
  Max   0x2ddb6   170000mW
post #98 of 600
Thread Starter 
Quote:
Originally Posted by ucode View Post

Then Sir you should not gamble.

Already ran my FE 1080 at ~340W measured on the 12V rail without hardware mod but have some other issues causing benches to score lower than they should. Tried to get some help asking people to run Furmark bench for comparison but nobody so kind of stuck having to work things out myself it seems. Still get small temperature related clock drops but perhaps not unexpected when the card shoots up to 85C with 100% fan in the one minute P1080 bench.

http://www.ozone3d.net/gpudb/score.php?which=274036

Unfortunately away from home and my 1080 to continue but I think things like power values are very easy to read in the BIOS. They are in milliWatts, take the 1070SC image that was recently posted as an example, 75W, 151W and 170W.
Code:
  Min   0x2ddae   75000mW
 100%   0x2ddb2   151000mW
  Max   0x2ddb6   170000mW


My bet is still on smile.gif

A single 8-pin PCI-e rail on a stock BIOS (Maxwell gen) was configured for 175W maximum. This value must be added to the maximum power that the PCI-e slot itself is configured for 75W. This gives you a maximum power of 250W.

Let's assume that we could MOD the BIOS and increase the 8-pin rail power to 250W (super high for an 8-pin and the absolute max)..That's 325W at the absolute maximum possible power (about 50W higher than I would ever run over an 8-pin, expect wire melting)...It is EXTREMELY unlikely that NIVIDA would have configured anything more than 200W, and probably much less TBH like the 175W we saw with Maxwell.

Either way you slice it, this still comes under 340W.. The only way that would be possible would be if it also included entire system load. It's just not electrically possible thumb.gif




I tried searching for those values... am I doing it wrong??
post #99 of 600
These are offsets. Find a feature like "Go to offset" or sth and enter the address there. I twill take you to the mW value.
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post #100 of 600
Would it be possible to buy the normal gtx 1080 strix and flash it with the bios of the strix oc? This way you would have a strix oc for less money?!
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