Club 3D Radeon HD 7850, 2048 MB GDDR 5 PCI Express 3.0
AMD Catalyst Driver Version, and Driver history:
ALL catalyst versions from 12.8 back to 12.4, including all intermediate beta drivers.
Windows 7 Ultimate 64 bit, constantly kept updated through windows update.
In world of warcraft, both 32 and 64 bit versions, if DirectX 11 is enabled, the computer will eventually freeze and lock up completely (with varying time of gaming allowed, from anywhere between instant crash at start of game to several hours played), with the last 10 ms sound looping. Computer is completely non-responsive and will require a hard reset.
Changing to DirectX 9 will fix the problem, at a slight cost in performance(the directX 11 version of the game simply runs better).
This issue persist with all Catalyst driver versions going back to the 12.4 version. I've tested them all. Only the 12.3 catalyst version does not have the problem, but all subsequent catalyst versions up to the latest 12.8 version will have the issue. I've also tried all available Catalyst Application Profiles (CAP's) up to and including the 12.7 CAP 3 beta without any luck.
The issue is, apparently, entirely DirectX 11 related, as far as I can gather, since no amount of tweaking the graphics settings has any bearing on the problem. I normally play with 4xMSAA, 8xAF, 1680x1050 and every other in-game graphics setting on highest possible (ranging according to setting from HIGH to ULTRA). Vsync disabled.
Applications and games:
World of warcraft, all patches since directX 11 feature was introduced, up to and including Mists of Pandaria 5.0.4 (current as of writing this post).
Intel Core i7 960 @ 3.2 GHz (factory settings, no overlocking) Quad-core with HT (8 threads).
Display Device(s) and Connection(s) UsedDisplay Device(s) and Connection(s) Used:
Samsung SyncMaster 2233, connected via DVI straight from card to monitor.
Motherboard or System Make & Model:
ASUS Sabertooth X58.
Motherboard BIOS Version:
Sabertooth X58 BIOS 1402 2012.08.29 update
System Memory Type & Amount:
6GB Corsair XMS3 DDR3 (3x2GB TR3X6G1600C8 G)
Corsair CX600, 600W Power supply
Pics of computer case, power supply and specs:
128GB Samsung 830 SSD drive (windows drive)
Samsung HD502HJ 500GB Mechanical harddrive
Samsung HD502IJ 500GB Mechanical harddrive
Seagate ST3500620AS 500GB Mechanical harddrive
HL-DT-ST DVD-RAM GSA-H60N dvd drive
Creative Sound Blaster X-Fi Extreme Audio PCI Express
I run with an open computer case, using standard CPU and Graphics card fans.
"System" checks done: Tried all other games I have, including RAGE from ID Software, Quake 4, Doom 3, Minecraft, EVE Online, Supreme Commander 1 and 2, Half-life 2 all episodes, Natural Selection 2 Beta, League of Legends, Alien Swarm, Company of Heroes(including Opposing Fronts and Tales of Valor) and I only seem to get the issue in World of Warcraft with directx 11 enabled.
DXDiag reports no problems detected. Haven't tried swapping hardware with anyone, though for a while I suspected a memory issue I did try and swap around the memory modules in their respective slots all to no avail. Wow in directx 11 still gets freeze+crash and nothing else seems to do.
02:10 PM by