Heavy Artifacts in Games

[brick_tobb]

Hello together,

i am getting heavy artifacts in some games (guild wars 2, bf4). I made a screenshot that somehow shows the problem:
http://www.filehosting.org/file/details/641091/gw002_Ink_LI.jpg

while playing there are much more artifacts than in the picture, all over the screen and they are flickering. The game does not crash though, i can play for hours, just with those strange displaying errors.

What i tried to solve the problem:
- installed newest graphic drivers, also tried some old ones
- tried different video settings ingame and in nvidia settings: no change
- ran dxdiag: shows no errors
- completely reinstalled windows 10
- ran a furmark benchmark test: shows no artifacts, no errors, gpu temp does not exceed 61 °C
- tried to run a 3DMark test, but somehow that does not work (simply exits saying an error occured, but provides no more info)

Does anyone have ideas where this could come from? Is the graphic card broken? (i dont really think/hope that is the case, because until some weeks ago it worked fine and the furmark tests run smoothly).

I am happy for any suggestions!
Thanks in advance!

 

[sizzling]

Artifacts are often caused by overheating VRAM or a failing GPU. If temps are ok its likely a failing gpu

 

[nzalog]

Yeah I agree it's probably a issue with the VRAM. If you want to try to salvage the card you can always to to increase the vram voltage (a little) or underclock the vram to see if the artifacts go away. I recommend underclock if possible.

 

[brick_tobb]

Hello again,

i ran MemtestG80 but i'm not really sure about the results, because it seems like everything i get is errors... or does the test simply fail?

Results:

Test iteration 19 (GPU 0, 1024 MiB): 2147065924 errors so far
Moving Inversions (ones and zeros): 6245376 errors (62 ms)
Memtest86 Walking 8-bit: 44610560 errors (500 ms)
True Walking zeros (8-bit): 7439360 errors (250 ms)
True Walking ones (8-bit): 10162176 errors (250 ms)
Moving Inversions (random): 5228544 errors (63 ms)
Memtest86 Walking zeros (32-bit): 9257984 errors (1000 ms)
Memtest86 Walking ones (32-bit): 11223040 errors (1000 ms)
Random blocks: 4996412 errors (156 ms)
Memtest86 Modulo-20: 16616770 errors (1875 ms)
Logic (one iteration): 2191883 errors (31 ms)
Logic (4 iterations): 229091 errors (47 ms)
Logic (shared memory, one iteration): 138158 errors (31 ms)
Logic (shared-memory, 4 iterations): 23751 errors (63 ms)

Test iteration 20 (GPU 0, 1024 MiB): 2265429029 errors so far
Moving Inversions (ones and zeros): 6238208 errors (62 ms)
Memtest86 Walking 8-bit: 46081024 errors (500 ms)
True Walking zeros (8-bit): 8372580 errors (250 ms)
True Walking ones (8-bit): 9690124 errors (250 ms)
Moving Inversions (random): 4738048 errors (63 ms)
Memtest86 Walking zeros (32-bit): 8571392 errors (1000 ms)
Memtest86 Walking ones (32-bit): 10944512 errors (1000 ms)
Random blocks: 4973394 errors (156 ms)
Memtest86 Modulo-20: 16740922 errors (1875 ms)
Logic (one iteration): 2441611 errors (31 ms)
Logic (4 iterations): 711313 errors (47 ms)
Logic (shared memory, one iteration): 206422 errors (32 ms)
Logic (shared-memory, 4 iterations): 132605 errors (62 ms)

Final error count after 20 iterations over 1024 MiB of GPU memory: 2385271184 errors


UPDATE: MemtestCL does not give any errors though