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[Official] NVIDIA GTX 780 Ti Owner's Club - Page 701

post #7001 of 16490
Quote:
Originally Posted by Banedox View Post

Check out the classified thread the sky v2 bios is a modified one of the update evga bios put out.
thanks

thank you sir
post #7002 of 16490
This 780Ti seems like a bit of a dud frown.gif
Low scores on the Valley benchmarks, artifacts on overclocked as small as +120 on the core clock and horrible buzzing coil whine. I'm half tempted to contact evga and get it replaced
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post #7003 of 16490
Quote:
Originally Posted by Magical Eskimo View Post

This 780Ti seems like a bit of a dud frown.gif
Low scores on the Valley benchmarks, artifacts on overclocked as small as +120 on the core clock and horrible buzzing coil whine. I'm half tempted to contact evga and get it replaced
As long as it clocks to factor specs, it's well within working spec. The coil wine though, you can rma it. I was able to rma my classified for that very reason.

Sent from Note 3
post #7004 of 16490
Quote:
Originally Posted by Magical Eskimo View Post

This 780Ti seems like a bit of a dud frown.gif
Low scores on the Valley benchmarks, artifacts on overclocked as small as +120 on the core clock and horrible buzzing coil whine. I'm half tempted to contact evga and get it replaced

+120 offset on an ACX = 1126 Mhz Core a 251 Mhz Core over clock from reference clocks which is quite a bit on stock BIOS. Have you added any voltage through Precision?

From my experience, I'm up to +100 offset which on ACX gives 1106 MHz Core stable, a 231 MHz Core over clock over reference clocks and boosts 1237 MHz Core. Just the slightest bump on the core and I'm not stable 100% of the time.

Memory is +300 offset 7600 MHz. My first impressive memory over clock with EVGA. biggrin.gif

As for your bad coil whine I'm sorry to hear that. Does it only coil whine when over clocked only or even when at stock? More than likely nothing can be done for the coil whine and if it's louder than the normal coil whine I'd seek replacement. Hard to say if it will work itself out over time or not.

Call EVGA support let them know it's brand new less than 30 days. See what they say and post back if you do with your results.
     
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post #7005 of 16490
Quote:
Originally Posted by Magical Eskimo View Post

Look what just arrived! biggrin.gifbiggrin.gif
Gonna install this bad boy and fill out the form smile.gif





Can you Upload me Pleas the Stock Bios ?
I forgot to save my
PLEAS biggrin.gif
Edited by Marvin82 - 2/1/14 at 1:14pm
post #7006 of 16490
Just set up a custom fan profile then, no need to edit any BIOS.
post #7007 of 16490
Quote:
Originally Posted by Arizonian View Post

+120 offset on an ACX = 1126 Mhz Core a 251 Mhz Core over clock from reference clocks which is quite a bit on stock BIOS. Have you added any voltage through Precision?

From my experience, I'm up to +100 offset which on ACX gives 1106 MHz Core stable, a 231 MHz Core over clock over reference clocks and boosts 1237 MHz Core. Just the slightest bump on the core and I'm not stable 100% of the time.

Memory is +300 offset 7600 MHz. My first impressive memory over clock with EVGA. biggrin.gif

As for your bad coil whine I'm sorry to hear that. Does it only coil whine when over clocked only or even when at stock? More than likely nothing can be done for the coil whine and if it's louder than the normal coil whine I'd seek replacement. Hard to say if it will work itself out over time or not.

Call EVGA support let them know it's brand new less than 30 days. See what they say and post back if you do with your results.

I think maybe I rushed in to it a bit. I've flashed the Skyn3t bios now, whacked it up to 1.2v. +100 on the core and +220 on the memory and I'm not getting artifacts or anything.



All in all I'm VERY happy with the performance of the card in games, running around 100fps on BF4 on ultra with a 120hz monitor with lightboost is a treat for the eyes! tongue.gif

The coil whine is bad all the time though, even at stock bios and clocks at like 50 or 60fps it's bad frown.gif on that basis I think it's worth contacting EVGA about it

Quote:
Originally Posted by Marvin82 View Post

Can you Upload me Pleas the Stock Bios ?
I forgot to save my
PLEAS biggrin.gif

EVGA780TiACXStockBIOS.zip 134k .zip file
Edited by Magical Eskimo - 2/1/14 at 1:20pm
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post #7008 of 16490
Quote:
Originally Posted by Magical Eskimo View Post




EVGA780TiACXStockBIOS.zip 134k .zip file
THX my friend thumb.gif

you saved my evening.
I forgot to save before the edit
post #7009 of 16490
Quote:
Originally Posted by Magical Eskimo View Post

I think maybe I rushed in to it a bit. I've flashed the Skyn3t bios now, whacked it up to 1.2v. +100 on the core and +220 on the memory and I'm not getting artifacts or anything.
Warning: Spoiler! (Click to show)

All in all I'm VERY happy with the performance of the card in games, running around 100fps on BF4 on ultra with a 120hz monitor with lightboost is a treat for the eyes! tongue.gif

The coil whine is bad all the time though, even at stock bios and clocks at like 50 or 60fps it's bad frown.gif on that basis I think it's worth contacting EVGA about it Warning: Spoiler! (Click to show)

Here is my take on coil whine from one of my articles:

[I"]Coil whine is mechanical resonance of the coil with the frequency of the signal passing through it. Physically, a coil is just loops of wire, sometimes with a core other than air. If the frequency of the signal is in resonance with the physical wires of the coil, the coil may vibrate. Oft times, the vibration is beyond human hearing (yokes in TV's can do this), other times it's in the range of human hearing.

There are many electrical parts/circuits which can cause whining noises, so don't just assume you are hearing coils. Annoying buzzing/electrical sound(s) are unlikely to eminate from a coil - you have something else making noise. Whining is caused by a part (or parts) physically vibrating.

Unto itself, voltage is not going to cause a whining sound. Voltage is electrical potential (actually, EMF); current through a device is dependent on the voltage across it. With a GPU, changing the voltage will changes the operating frequency of various components within the card, however something is probably in resonance with the signal generating the whine"[/I]

Now i minimized my titans whine by placing thermal tape on the inductors:



This is a reference 780Ti, inside the yellow rectangles, R22 inductors for 6 core phases and R33 inductors for 2 memory phases!


Cheers

Ed

(Team skyn3t)
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post #7010 of 16490
Hello, recently got a 780 ti ghz edition and it all appears fine, no weird noises or anything.

However, when I play an extended period in some games (black flag for example), the driver randomly crashes me to desktop, saying it has recovered from a driver problem. I have looked at the temps when this happens and it's nowhere near overheating (55c-70c on load). I tried updating the BIOS on my maximus VI hero as I saw that that may be a possibility but that did not fix it.

I am currently using the 334.67 beta driver, and was using the stable before that as well. I experienced crashes on both.

Is it possible I just got a dud card? Or is it another reason.
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