GTX 560 OC version ( at 900 MHz)

[pepi]

I have this card http://www.gigabyte.com/products/product-page.aspx?pid=3707
I look at others manufacturers ( same card and freq) and noticed  that other bios have or 1.0625 or 1.075V , but Gigabyte have only 1.050V
I dont use card for gaming I used in in Boinc project. Card produced few errors in computing. When I downclock  card to 850 MHz there is no errors, so it is obivious that voltage is too low ( at least for sample of GPU on my card) to get it stable. There is no other issues on 900 MHz, it pass OCCT test without error over 1 hours.
So please can someone make official BIOS with those voltages.

I have ( before this card) GigaByte GTX460 with 768 MB of RAM, and overclocked myself to even more MHz, and have no computation errors at all, and was rock stable.

[pepi]

Update: it looks like gigabyte card always downvoltage bios settings.  In BIOS votage was set to max 1.05 V  but under 99% GPU load real voltage never goes over 1.0125V and I think it is to low for 900MHz and that is core of problem.

[Dark Mantis]

There have been a few instances of this sort of issue on the forum recently and the general concensus of opinion is the same as yours.

[pepi]

So will Gigabyte do something? Today I raise min  voltage to 1.025 and now got stable card at 900 MHz.

[Dark Mantis]

Have you contacted GGTS about it and made a report ?

If not you can do so here:

Just enter your email address and click on the language of choice.
GGTS   http://ggts.gigabyte.com/

[pepi]

I finally make card stable at 900 MHz
With reference voltage ( 1.0125V) I got 7 errors in OCCT GPU test
with voltage 1.025 I got 1 error in 45 minutes of testing
with voltage 1.0375 all problems are gone, and card is rock stable.
So simply adjusting of voltages, makes card good
Now, lets play a game

[Dark Mantis]

Well that is good news and most of these problems are fixed with a bit of voltage tweaking. Enjoy your game.