Ray Walton :
Well Asus technical help desk in Bangkok here have been a great help they sent me a suggestion to try the AMD 13.20 driver dated 26/11/13 which I thought was superseded date wise by the ATI 13.12 driver dated in mid December. Also they sent me a link to make sure I uninstalled all traces of earlier ATI and AMD drivers. Did all this with the R7 260X card now reinstalled and it all seemed to work for a while but bang back came the freezes after about 10 minutes, so no joy there.
So tried the GPUTweak fix somebody here suggested of running up the 2D memory clock to 1750 Mhz from its default 600 Mhz and ensuring I set GPUTweak to run up at Windows start up AND to always use the current configured GPUTweak set up with the now configured 1750 Mhz 2D memory clock set (that bit is important BTW else you go back to 600Mhz default value again at the next boot up of GPUTweak!!) .
Strange thing is once I move even a little up from the default 600Mhz 2D memory clock the GPUTweak monitor shows it jumps straight up to the 3D set speed, which in my case is 7000 Mhz default !!! Strange that but I can report that it now DOES NOT FREEZE even after trying several reboots and running in 2D mode for some time now 🙂 So many thanks to whoever posted that fix though really it is of course only a workaround but it does work.
Will be talking back to the Bangkok Asus help desk guy tomorrow when they are back at work so if any better solution transpires I will post it here of course. They have told me that the official release of latest new R7 drivers is imminent, but of course he cannot confirm whether it will fix this annoying bug, so we will have to see.
I did pretty much the same, and got my system to quit black-screening for the last 3 days (was crashing about every 2 hours).
System specs: EVGA 132-bl-e758 pci-e x16; Core i7 940; 12Gb mem; 120gb SSD + 1Tb 5.2K; XFX R7 260x Gold
a) updated to MSI drivers ver 13.20
b) changed default mem clock to 1750mhz using MSI Afterburner
c) updated fan speed to boost to 100% at 45°C
I run WoW at High settings with Rainmaker desktop apps running, and usually several other windows open, including Excel and Outlook. After my changes, I had one crash (pretty much right after I rebooted with the new drivers) and haven't had one in 3 days since.
UPDATE: Well, it figures that I would post here and then my pc would make me a liar; just had another black screen crash. Guess I'm taking this R7 260x back to Best Buy.