I'd like to make Gigabyte aware of an issue with the Ti560 OC:
http://www.gigabyte.com/products/product-page.aspx?pid=3707#ovI have got two of these cards in SLI.
These cards do not work at the default speeds.I ran into a number of problems after I first installed these. Since then, I have added additional fans to my PC, rewired it completely for airflow, and watercooled the CPU. The cards do not get hotter than 70 degrees under full load, my CPU (i7 920 @ stock) does not get hotter that 65 degrees, so I can safely say that heat is not a possible issue- further, I have a high end Corsair PSU with ample voltage on the 12 volt rails. The power supply to the PC or to the cards is not an issue either.
I get white or black screens of death using the 266.66 drivers when trying to play BFBC2. Using the 270.51 (Beta) drivers, I am able to get the cards running the game stable by using MSI afterburner to drop the clocks down the the Ti560 reference speeds (822Mhz/1900Mhz). Its quite annoying, having paid for factory OC cards, to have to drop them back to stock AND have additional programs running, just to have the cards work as advertised. I was previously using Nividia system tools to do the same thing to the clocks but for some reason, the cards flick back to factory speeds after every reboot (and there have been a lot of them!), forcing me to manually change the clocks each time- this is a different issue however and the fact remains that I should'nt
have to do this each time I want to use a 3D application.
The Nvidia forum, where I have also posted about the issue, is choc full of people with the same problem. The majority of people who have posted seem to be using gigabyte cards, although there is a number of people complaining about the same thing on the Ti560's from other manufacturers who have bought factory OC'd cards.
It would be nice to have somebody from gigabyte acknowledge the issue. To fix this problem for the vast majority of people, I'm 99% sure that a bios tweak, bumping the voltage up slightly would solve the problem. In addition, I have noticed that using 4x AA/4x AF or higher causes these cards (well, the drivers anyway) to crash. This may be an NVidia driver issue, rather than a gigabyte problem though. Note that I have also applied the TDR registry tweak to supposedly fix this issue, but it has not worked.
If anybody else is having similar problems with Gigabyte GTX 5xx cards, or the Ti560 OC cards specifically, please post here to hopefully get some kind of official response for the problem. For further depressing reading, here is the (13 page and counting) thread about the problem people are having from Nvidia:
http://forums.nvidia.com/index.php?showtopic=193106&st=0