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Any way to disable ECC through BIOS mods?

post #1 of 19
Thread Starter 
I don't really see the point in having ECC on a gaming video card. I'd rather see texture corruption than have the memory controller go thru the overhead of ECC or if unable to correct the error re-requesting the data.
post #2 of 19



What card are you referring to and are you expecting more than a few FPS gains from any additional bandwidth?
Edited by sdrawkcab - 9/24/16 at 8:23pm
post #3 of 19
Thread Starter 
Quote:
Originally Posted by sdrawkcab View Post




What card are you referring to and are you expecting more than a few FPS gains from any additional bandwidth?

I was more interested in disabling ECC to test my memory overclocks -- it's hard to tell if a framerate stutter is due to ECC kicking in or just a lack of GPU processing power. With my x850xt I would just increase my memory clocks until I saw noticeable flashing or texture corruption (or a hard lock), but w/the 980Ti I experience none of that.

I have read that increasing memory clocks can net big gains in framerate? Is this incorrect?

The control panel for my 980Ti doesn't have the option to turn off ECC, which I've read is something all GDDR5 video cards implement.
post #4 of 19
Quote:
Originally Posted by 8051 View Post

The control panel for my 980Ti doesn't have the option to turn off ECC, which I've read is something all GDDR5 video cards implement.

980Ti does NOT have ecc, not all GDDR5 cards have ecc support.
Where did you read this?


I have been educated

http://www.anandtech.com/show/2841/12
Edited by jakethesnake438 - 9/25/16 at 1:46am
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post #5 of 19
Workstation Cards are the only ones afaik only have ECC available to them, never heard of a consumer based card have ECC be usable.
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post #6 of 19
You can use the inbuilt nvsmi utility via (admin) command prompt, 0 to disable 1 to enable.

C:\Program Files\NVIDIA Corporation\NVSMI>nvidia-smi.exe -e 0

Don't be surprised though if it reports ECC not supported. wink.gif
post #7 of 19
Quote:
Originally Posted by jakethesnake438 View Post

980Ti does NOT have ecc, not all GDDR5 cards have ecc support.
Where did you read this?

ALL GDDR5 cards do CRC checks on memory transactions.

You cant disable it.
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post #8 of 19
Thread Starter 
Quote:
Originally Posted by KarathKasun View Post

ALL GDDR5 cards do CRC checks on memory transactions.

You cant disable it.

I had thought that GDDR5 memory architecture had built-in ECC capability, but wouldn't it be possible
to design a memory controller that just ignored the ECC bits? Maybe just tie the ECC bits to ground?

I could see how ECC would be useful for CUDA apps, but for gaming? Who cares? It's just useless overhead.
post #9 of 19
No, it has CRC. CRC just lets the controller know soomething got corrupted and that it needs to retry communication. It does not detect errors inside the memory pool like ECC.

There are no extra pins and no overhead. You cant disable it.
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post #10 of 19
If you mean CRC as in EDC then AFAIK it can be disabled for read and/or write through MR4.

@8051 If that is the case it would certainly be an interesting project. Please let us know if you are successful.
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