So I have been grappling with my 7970 from Sapphire over the past sever or so months I have had the card. During certain DX11 enabled games my system hard locks and I have to use the reset button to restart my computer (note that pressing my restart button actually restarts my computer so the computre itself is not hard locked but the video and sound outpput and keyboard input is).
I have tried about a billion things to fix the problem and have come to the conclusion that there is just something wrong with the way the card interacts with my system.
For things that it is not:
Not a incomplete driver uninstallation problem
Not a heat problem
Not a PSU problem
Not an overclocking problem
I can rule these out because everything runs fine in most games even DX11 ones. Only specific games are causing an issue but even then it is intermittent.
First my system specs though:
CPU: Intel I7-3930K @ 4.6Ghz
RAM: G. Skill Quad-channel 1600Mhz 16GB
MB: Asus Sabertooth X79
System hard drive: OCZ Agility 3 120GB SSD (only contains Windows 7 Install)
OS Windows 7 Ultimate 64-bit
Gfx: Sapphire Radeon HD 7970 OC Dual-X
PSU: Ultra X4 1200W Modular
Here is what I have tried:
Updatring to the latest MB bios (did that last night)
Uninstalling drivers, using Driver Sweeper to get all of the files off, and then reinstalling
Full reformat of my system
Changing to BIOs profile 2 on the card
Down clocking from the factory overclock
Increasing millivoltage for the GPU from 1112 to 1128 and 1131
A different 7970 (borrowed from a firend)
A different PCI-E slot
Changing the PCI-E slots to Gen 2 instead of Gen 3
Updating my Realtek drivers
Updating chipset drivers
Using different 8/6 pin cables and oplaced in different slots on the PSU
Trying my card in a different system
Ran Memtest, my RAM is fine
PC can run on Prime95 for 10 hours with 6 threads with no problems
Running some hugely resource intensive PS2 games via PCSX2 did not cause my system to hard lock
None of these either fixed the problem or indicated that the card was entirely at fault. I tried two other 7970 cards besides the one mentioned above and all of them caused this same thing to happen.
So far my computer only hard locks in four DX11 enabled games and only when playing these games:
Total War: Shogun 2- hard locks between 5 and 20 minutes of playing every time.
Black Ops 2: If it is going to hard lock it does it in about 30 minutes. However I have been able to play the game for 5 hours straight at times and not have a hard lock.
Secret World: Hard lock within 15 minutes
WoW: Hard lock within 25 minutes
I am going to try the 12.11 beta drivers today but so far from 12.3 all the way to 12.10, none of them have fixed this problem.
These are the only DX11 games that cause any problems. Crysis 2 with DX11 turned on, the tesselation pack and HD texture pack installed runs smoothly and without any problems. Metro 2033 runs just fine and does not cause any hard locks. Neither does Saints Row the Third.
The card temp does not go above 60C usually and average during gameplay on games that do and games that do not hard lock is about 56C.
Right now my card is using 900 gpu clock and a 1375 memory clock. The factory settings for the card are 1050 gpu and 1500 memory.
So I now ask again, is this the GPU saying it is a lemon or is this something else?
"I thought what I'd do was, I would pretend I was one of those Deaf-Mutes...Or should I?" -- Laughing Man
Laughing Man Productions² Gaming and Entertainment Network
10:07 PM by